Welcome to this edition of the Thermal Circle, in this edition I have seven DVDs to review from Radio Carbon Art, many thanks to Paul Naton who contacted me from the USA requesting these reviews.

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Hand Launch Tech Lab

This DVD begins by introducing what is going to occur during the DVD. First up is the delivery of a new HLG to Paul Naton a Sirius 09, next up the box is opened showing one fine looking hand launched glider. The fuselage is shown with an explanation of the design, very informative. Next up is the wing, an explanation of the wings construction is the wing is shown to be very strong and stiff with the construction techniques used. A three view is shown of the model showing good design in this model. Next up is the rudder showing quite large surfaces for this design and two rudders are provided. Elevator is the next part, with an interesting design using a spring to allow for control of this surface. The next topic is Hollow Wing Build, the construction of the wing, the tools used in construction are shown.

A foam pad to protect the wing during the construction phase is demonstrated at the beginning of the build. Servos are the next thing discussed the need for high quality servos in HLG. The Hyperion ds 09 is chosen to be used in the demonstration model. A top drive system will be used on this model and a diagram shows how this works. Where to put the servos is the next topic discussed, in what position and the need to complete one side of the installation before beginning the other side. Cutting the servo bays is the next demonstration, how to do this the correct way then the trial fitting of the servo to be used. Pushrods to be used are up next, what diameter and what type of wire to use and the use of solder links and the use of a J bend on the servo end a solder link is used for the aileron connection. The use of balsa shear webs is discussed to keep the strength in the wing where cut out. The way to get the pushrod at 90 degrees to the turning surface is shown, with tape used for alignment and the way to get correct alignment on the top surface.

Construction using a dremel tool to cut the output areas of the pushrods is shown next with this going well with no problems the importance of trial fitting when completing this part of construction is clearly mentioned. The horns used are shown, a special ABS plastic horn is used on the demonstration model and the way to attach these horns to the wing. The importance of servos being at there electronic zero point for accurate flaperon throws is clearly demonstrated the problems that can occur when this is not done are explained. Zeroing trims, mode trims and compensation mixes when beginning the setup of a new model are the next thing demonstrated.

The best position for servo arms is clearly demonstrated with a diagram. The horns are glued into the model using epoxy and micro balloons for this part of construction and the importance of alignment is demonstrated. CA is then used to apply fillets around the horns. Next up is gluing the servos and running the wires in the wing how to do this is well explained and four pin connectors are used for the servo installation. A small problem is encountered with a servo arm not being strong enough, this is fixed with a stronger arm. Next up is gluing in the servos, 5 minute epoxy is used here with micro balloons a small amount of epoxy is used and the servo is glued in. Soldering the linkage to the pushrod is demonstrated next with the surface in the neutral position and then the hatch cover is attached. Paul then tests the completed wing this shows an excellent setup during this build. Flight modes on the models wing are demonstrated with equal movement up and down, a successful build and setup. Where to place the wing launching peg is up next and this shows how to place the peg and how to attach it. The wing is complete and now begins the fuselage construction.

The stab is mounted and the pushrod system shown a a torsion spring system mentioned to be common in European HLG. The way this system works is well demonstrated. The need for a high quality digital servo when using this system is clearly explained. The way the torsion control works is shown with an actual elevator to demonstrate the system in effect. How to mount the torsion control is shown next, the correct way to mount the system. The drive system is shown next with the right type of wire to use this includes kevlar, spectra or spyderwire. The Asymmetric ruddder is the next topic, the shape of the rudder to dampen out yaw during launch. The need to be able to change assymetrics is also mentioned the ability to mount the rudder both ways. The need to mount the rudder at 50% is explained including the theory of this setup. The next topic is electronics, all the electronics required are show in a diagram. An AR6250 is chosen for this model, the carbon fibre version. The elevator servo used is a DS188 JR digital, the battery used is a 360 mah 2s li po pack running 7.4 volts balance charging this pack is shown. A Paul Daniels regulator is used to step down the voltage of the lipo to 5.o volts a suitable level for the model being build. A Paul Daniels switch jack is also used in this model.

Other batteries that can be used in these models are shown including single use camera batteries. Also shown is the Ram 3 altimeter to show altitude including launch height when flying DLG. The next topic is Last Details this shows the need to be able to see the receiver when in the model and where to place the aerials. The receiver is shown in place velcroed in and the aerial positions shown. Connecting the elevator wire is the next part shown and the need for clamps to hold the elevator in place when doing this the way to achieve this setup is clearly shown. The need to be gentle when inserting LIPOs into fuselages is discussed with the problems such as chafing which can occur. Next up is CG positioning the ability to use tungsten weights when cging your model is shown on a diagram and the different weights which are available. The next topic is Battery Lab, showing the importance of using high capacity packs in sailplanes using 2.4 ghz to prevent brownouts and also how digital servos run better on higher voltages. The advantages and disadvantages of different types of cells are shown next with practical demonstrations of each cell and diagrams with the positives and negatives of each type of battery. The importance of a good quality charger is clearly stated and the features required are discussed and how to use these chargers are demonstrated. Next topic is rotary drive systems the model with this drive system is a Lightspeed 1 the way the system works is demonstrated, interesting stuff!!

The way the servos are mounted and the mechanics are well shown including how the axle works. Rotary drive systems are thoroughly explained during this part of the DVD as are construction of this style of surface movement. Problems with RDS systems are up next these include poor quality servos the need for digital servos and a ball bearing output also a problem is the wire used to activate the surface the correct wire must be used and how to flatten the rod end and how to roughen and notch the wire when using an RDS.

The next topic is Old Dog- New tricks this is a comparison between a newer and older model the differences are discussed and how to update these older models this included replacing the servos with digital servos and using longer horns for more movement and changing the launch peg. Stiffening the boom on these older models is well discussed and the way to do this is shown. Replacing the tail surfaces is shown to be an easy upgrade and where to buy these new tail surfaces is shown including a web address. Upgrading this old model is clearly shown, showing the old equipment and the new equipment being added.

The next topic is flex reduction the adding of carbon fibre to tail booms to reduce flex in the old model. There is a practical demonstration of reinforcing a HLG fuselage clearly showing how to do this. Next topic is 2.4 ghz range checks, how to set the failsafe and how to range check the model. The model is rebound first, then the failsafe is set and the radio is repowered for testing, the failsafe is then checked again. A range check follows showing good range on the model. Moving the model and doing checks is also demonstrated. Running the aerials outside the fuselage is recommended in this DVD. Different aerial positions are discussed to provide the best reception. The importance of range checking on the ground and in the air is explained completely. The next topic is tips for rudderless flying, mentioned is that rudderless models are not for beginners mainly for advanced pilots, the need for a good elevator setup is also mentioned as being important. The advantages of these rudderless model in a thermal are discussed. Differential is discussed next and the amounts used and the way it effects tracking are clearly demonstrated. The next topic is Quit talking, start flying, this shows a model being launched in weak conditions and good air is encountered with a good flight following. Another launch follows with good height attained and good air encountered. Several more launches followed with good air encountered on each flight. The model used in this demonstration launches really well,an excellent HLG. This DVD ends with many launches and some aerobatic flying. Overall an interesting DVD well worth purchasing.

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Soaring Master Class 1
This Dvd begins with plane setup,cg is the first thing covered and also radio setup, CG location is explained using a neutral point as a reference. The recommended setups are around 35 to 40% for a starting setup. The next thing demonstrated is the correct tow hook position for a test flight, a forward position. The Cg location was demonstrated with a dive test of the demonstration model. Next up is radio setup, elevator setup is thoroughly covered the need for appropriate throws and centering in the elevator is well explained.. Problems with slop and pushrods is well covered explaining the need for a good pushrod setup in your sailplane. Aileron and flaps are covered next, the DVD explains you need as much throw as possible on the surface to allow for the most options when radio programming, this is demonstrated on the model used for demonstration is well explained covering the throws needed to set up a model for correct differential and the feel in the model when setting up differential. The flap setting is the next thing demonstrated, flap down position and upward throws for using aileron as flap is well explained. The percentage throws required for these setups is demonstrated quite clearly. Aileron to rudder is the next thing demonstrated, the reason for this setup is to compensate for adverse yaw that creates drag,this is well explained during this part of the DVD. The problems caused by adverse yaw are well demonstrated by using a small model to illustrate adverse yaw. The setups used are shown, using two positions to optimize the sailplane using a high rate setup and a low rate setup in rudder mixing. There are diagrams in this DVD that demonstrate the theory being demonstrated. The differential settings are explained is practice, what occurs with more or less differential and how the model performs.

Reflex and camber are the next things demonstrated the settings and the throws required to optimize the camber and reflex in different flight conditions. The need for equal movement on the camber setting is well demonstrated and the need and uses of camber and reflex. Elevator to camber mix is the next thing demonstrated the need for this mix to improve the pitch control to make it more efficient and the need for positive and negative mix in this setup. Flight mode programming is the next thing demonstrated, the need for four or more flight modes for launch, speed and other flight mode setups. The settings used on the demonstration model are shown on the radio used in this DVD, which switches and what modes are being used in the setup of the model. The theory of flight mode programming is well explained and the used are clearly described. The uses of different setups in flight mode programming to optimise the trim of the model are demonstrated quite clearly. The importance of the feel of the radio is the next thing explained, the stick tension, and other settings to make the radio comfortable when in use and the importance when competition flying. Tow hook setup is the next thing covered the need for beginning the tow hook setup with the towhook on the CG. The theory of towhook setup is explained completely and the things that can occur when adjusting the tow hook. The need for adjustment by moving the tow hook rearward during setup is well defined. The adjustments required for an optimized launch are clearly demonstrated. Launch camber is required for the best launch and this DVD thoroughly covers the need for launch camber when competitive soaring.

Different settings and the need to experiment when setting this function is well demonstrated. Launching clinic is the next topic covered, launch technique and the settings required for an optimal launch are well demonstrated with an actual launch and zoom at the end of the launch. The angles needed for a successful launch are well demonstrated, the need for a correct angle when launch throwing. Optimized launch angles are demonstrated with a diagram and by using a small model to demonstrate an optimal launch. Launches are demonstrated, the need for correct launch angles and the timing required to achieve an optimal launch a diagram clealry demonstrated. Controlling the winch is the next thing explained, this includes not using the winch at full power during some launches, in high winds for example and the problems that can occur with full power launches including equipment damage to the winches.

Winch launching is extremely well explained and well demonstrated in this DVD. Landings are the next theory explained, how to achieve the best landings in a competition environment and the way to achieve this with a thorough explanation and the things that can occur that make competition landings difficult and inconsistent. Approach timing is demonstrated with a small model, the need for consistent approaches in relation to time, the need to be in a consistent position when landing in competition for a perfect landing time. A number of demonstrations of incorrect landing approaches are shown, in essence what not to do when landing. Thermal flying is the next topic with some demonstrations at what to do when thermal flying with flight demonstrations and the need and the way to read air. Strong wind flying is the next topic and shows the difficulty of soaring in these conditions, there is a diagram showing the effects of heavy weather thermal soaring and the need to drift with the thermal in heavy wind conditions. Overall a comprehensive DVD with a lot of useful information, well worth purchasing.



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Soaring Master Class 2

This Dvd begins by introducing the pilots that will be providing instruction during the DVD. First up is Daryl Perkins launching a sailplane achieving quite a good launch. Daryl was unhappy with the elevator preset and he adjusted the elevator for the next launch. The next launch was better and the adjustments seemed to work. Daryl discusses the problems with using different winches when launching. Daryl demonstrates the camber he uses when launching, a handy piece of information Daryl then demonstrates a launch with these settings which looked good. Daryl discusses what he does In practice the day before a competition and the way he flys during this practice. The flying shots during this section are superb with Daryl Perkins flying extremely well. Daryl discusses practice techniques to be used during practice the day before an event. Next up is landing practice using a bungee to launch the model. Daryl uses a short bungee for practice to get as many launches as possible for practice.

The discussion on landing approaches is suburb with many different tactics covered for the best landings. Crow braking is discussed and the ways to set up this function and the movements are demonstrated and examples of crow landings are shown. The flight footage of Daryl setting up his crow braking is supurb, very educational. Daryl also demonstrates the stick movements he uses when landing. There are a number of examples of Daryl landing showing the techniques he uses in action. Next up is light air technique; this begins with flight demonstrations in light air with the model only gently climbing and with Daryl discussing flight techniques in these light air conditions. The next part of this DVD shows Daryl Perkins at a contest he launches well and begins searching for lift the flight goes well with Daryl contacting lift and flying out his time quite easily, the landing was well executed.

Finding lift is the next topic discussing finding lift and avoiding sink, diagrams are used to explain how the lift and sink cycles work as are small models. The demonstrations show what to do when contacting different types of air when flying. Tactics when thermal soaring a long way down wind are well covered and explained with a diagram. Next up is another competition flight with Mike Smith flying a High End and Daryl Perkins calling, this flight goes well with Mike contacting lift and looking good for ten minutes, as the flight continues the model climbs well and the footage of this flight is supurb. Mike makes his time and the landing is not so good but the flight was supurb!

Time to time is the next topic this discusses stopwatches and the importance of being able to use stopwatches during flying. The right stopwatches are discussed and the need for these stopwatches during competiton. The correct way to time for someone is thoroughly explained and the technique to do this correctly. Next is a thermal flight by Tom Kiesling, the flight begins by discussing possible lift before launching, and with Mike Smith calling early this flight was not going well but lift was contacted and the model began to climb the flight went well for a few minutes but more lift was required to make the time. In the end Tom makes his time with good flying and the landing was ok. Prepare for pop offs is the next topic, strategies for this occurrence are discussed including re launches available for pop offs. There is also discussion on events where no pop offs are allowed. Line breaks are also discussed, problems in events with pop offs and other problems are discussed with the problems that can occur at contests. Next up is Cody Remington with his Espada and Skip Miller calling Cody proceeds to break three winch lines! They then discuss the flight and what they wish to achieve. After the fourth attempt Cody launches and acheives good height. The flight begins well with a slow climb rate after launch Codys Espada handles the conditions superbly and he makes his time easily. The landing that Cody made was also excellent. Cross wind launching is up next, techniques are discussed and the best way to achieve the best launch in these conditions, also the problems wit retrieval lines are explained when launching in a cross wind.

There is a comprehensive discussion of how to get optimum launches in crosswind conditions. Mike Smiths flight is next with Daryl Perkins calling, Mike achieves a good launch and begins the search for lift, Mike contacts good air and his flight was made with a maximum time and a good landing. Cody Remington is the next pilot up with Skip Miller calling and he discusses what he intends to do during the flight before launching. Cody launches well and again begins the search for lift he encounters decent air and sticks with this at the beginning of the flight after some difficult time with little lift Cody encounters good air and makes his time with a decent landing. Cody then discusses light air techniques and how he does it. This is an interesting DVD with good demonstrations and shows Americas best soaring pilots in action and is an excellent DVD, well worth purchasing.

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Soaring Master Class 3
This DVD begins by introducing the instructor Mike Smith, Flying the Stillness is the beginning topic and this explains flying in dead air. It discusses attitude when faced with these conditions, getting a good launch and recovering from the ping with a level attitude. Reading air is discussed and taking notice of the other models flying as important when flying in dead air. The DVD explains area to stay away from when flying in dead air and where to find the worst air at model flying fields. The DVD also discusses good places to fly over on dead air days. Next up is a model flying with a camera attached and dead air techniques are demonstrated with this model, demonstrating the importance of efficient flying and making as little turns as possible. The importance of not skidding or sideslipping are well explained when flying in dead air, how to fly efficiently in these conditions.

Next the model contacts lift and the need for tight turns is demonstrated when flying in small thermals and the model climbs well in this thermal. The footage of this model flying is supurb demonstrating a model climbing strongly in good lift. The next topic is dead air flight 2, strategies are discussed before launch and the model is then launched, the launch goes well with good height attained. Mike then goes in search of lift in these dead air conditions. Minimum sink rate is a topic well discussed during this part of the DVD as are signs of lift in these conditions. A Diagram is used to better explain these topics. Again Mike contacts good air and does some exploratory turns and again contacts lift climbing in this good air. Mike then leaves this lift and begins the search for more good air and again finds lift climbing strongly in this good lift. Next up is the Yaw Vane this demonstrates the effects of rudder effect using this yaw vane, demonstrating efficiency in a coordinated turn. This helps to adjust the model from flying inefficiently by demonstrating these turns on model mounted camera.

The next topic is yaw extermination, by using aileron to rudder mix to make the model turn more efficiently. Different setups are demonstrated showing the effects of different setups including no differential no aileron to rudder mix and others showing the inefficiency that this causes. Many different setups are demonstrated showing the effects of these wrong setups. Different speeds are demonstrated with these wrong setups showing the effects speed causes during adverse yaw situations adding differential reduces the adverse yaw dramatically. The next test is manual aileron to rudder mix and this acheives suprisingly good results with little adverese yaw. Next up is thermalling without coupling and the model flys reasonably well and climbs without the use of rudder, an interesting demonstration. The importance of proper aileron to rudder mix is clearly defined. Next up is thermalling coupled and uncoupled to demonstrate this style of flying. Mike launches the model and acheives good height flying uncoupled, he is manually controlling the rudder during this flight, and begins the search for lift. Mike then contacts lift and begins circling, and his turns looked quite good. He then flys the model without using rudder and the turns did not look good! Mike again contacts lift and cores the thermal well climbing out solidly without rudder to aileron mix. Mike then couples the model and the changes are amazing the model flys more smoothly the turns look better and the model climbs much better in the strong lift.

The next discussion is model speed and the efficiency gained by flying at the correct speed and he demonstrates the problems with a slower speed when thermal soaring. Correct use of the rudder stick when flying is thoroughly discussed, when to use rudder and when not. Mike also demonstrates the problems of pitch when using aileron the down motion of the model when turning. The next demonstration uses a radio to demonstrate the differential rates required when setting up thermal models. The radio used to demonstrate is the Airtronics SD10g and the screen shows the differential settings on the model being demonstrated. The DVD advises using the model as measurement not the radio settings as the most accurate way of measuring percentage differential. The importance of these settings when optimising a sailplane is well explained and demonstrated in this DVD using the radio to demonstrate the settings on the screen. The problems of adverse yaw are clearly and thoroughly explained, an excellent explanation.

The next topic is elevate, this is the setup of the elevator. The throws required are discussed and how much throw do you really need. How to adjust your elevator is thoroughly discussed including the use of exponential and the amount of throw required and the use of flight modes to adjust your elevator throw. The importance of correct elevator setup is definitely explained well. The right attitude is the next topic covered and this demonstrates the importance of the model having the correct attitude when flying for the most efficiency and to attain a level turn when flying to keep the proper energy when soaring. The importance of the proper attitude when soaring is clearly demonstrated and well explained. How to achieve the most efficient attitude of the model when soaring and maintaining the correct speeds when flying minimum sink etc. Thermal Master Class is the next topic, this is a demonstration of thermal flying and techniques. Mike flies well here contacting lift quite quickly and climbing out very well during this demonstration. Mike Smiths thermal skills are magnificent and he continually contacts lift climbing strongly. Thermal techniques are well explained during this part of the DVD with good tips on how to competively soar. Mike then reduces height to make soaring more difficult and again goes searching for lift after a short time contacts lift again and begins climbing coring the thermal supurbly and having excellent drift technique. Many tips are given during this demonstration and how to achieve the most efficient thermal turns. Again Mike leaves this thermal and goes searching and quickly finds more lift, this is one excellent thermal day the whole sky seems to be climbing! These demonstrations are supurb easily, the best part of this DVD!

The need to be able to read the model is shown to be one of the most important parts of thermal soaring. Also mentioned as important is the need for your flight modes to be in trim, camber, normal, reflex etc. Also explained is the way that cg effects the way the model reacts to lift the need for a suitable cg location for your flying style. Mike smiths thermal demonstrations is some of the best flying you will see on DVD he continually finds lift and is up for what seems an eternity. Neutrality is the next topic, this is setting up the model for a neutral setting. This setting is adjusted using the dive test and the way this is done is demonstrated in this section of the DVD. The different settings and there effects are clearly explained using a small model to demonstrate the different effects. Decalage is the next topic, the correct angle of attack for the model. Decalage is measured with an incidence meter, all flying tailplanes do no need this adjustment checked. Decalage flight tests are required next and the trim adjusted for the particular incidence settting. A dive test is required to test the decalage and the correct setup will have a gentle pull out or remain at a constant angle, interesting information and useful advice that is not commonly discussed. Fly like Mike is the next topic and it involves Mike Smith flying including a low level save and return to good height. Next Mike does a speed run and again climbs away from low level this guys thermal skills are supurb. Overall an excellent interesting DVD with a lot of useful information and excellent flying by instructor Mike Smith.



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2.4 Radio Clinic
The first topic covered in this DVD is the truths of 2.4 ghz technology and the advantages of 2.4ghz equipment including the fact that you cannot shoot down other aircraft and other advantages including telemetry. Some disadvantages are also discussed including cost and voltage sensitivity with increased power usage. 2.4 ghz usage is discussed using this band for RC and how spread spectrum radios work using the band in different ways. Binding the radio is discussed and how this makes 2.4 ghz work. The chances of interference are discussed and how the low transmission strength of other equipment reduces the chance of interference. Next a spectrum analyser is used to demonstrate the 2.4ghz band , this shows transmissions on this band and how busy this band is. The usefulness of a spectrum analyser at the field is mentioned.

First tested is JR 11x using DSSS technology and this is plotted on the spectrum analyser and shows the signal distribution. The reliability of the JR system is well discussed and the possibilities of interference are demonstrated to be very low. Next up is the Futaba 12fg this is a frequency hopping system using the FASST system, channel hopping continuously to defeat any chance of interference this is demonstrated on the spectrum analyser.

Next up is the Airtronics 10sg and how this radio works on the 2.4ghz band and the reliability of this equipment, the high transmission rate is discussed. The spectrum analyser showed the broad band used by this radio. Next up is the Aurora 9 from Hi Tec this radio has two transmission modes in the 2.4 ghz band and this is demonstrated on the spectrum analyser. All radios are then switched on in different orders to demonstrate on the analyser the different radios in action. Seven radios are then switched and this shows the band filling but there seems to be no problems. High usage such as having many radios on is discussed and the reliability is discussed as being okay in these high noise environments. Next up is new 2.4 ghz systems, Jr propo DMSS, Graupner HOTT and Spektrum DSMX. Graphics are used to demonstrate how these systems work and footage of these new receivers are shown and pros and cons of each receiver and the updates that are available, The next topic is radio walk around the first radio is the Jr 11x it shows the backlight on the screen the rolling selector and the different flight modes are discussed as are the switches usable with this. Radio software is shown with the basic menus shown. The battery is also shown and the ability to change to li po if required. Also shown are a number of different receivers. The next radio is the Futaba 12 fg a FASST 2.4ghz system and the functions of this radio are discussed with software for all different types of models. The ease of programming is well demonstrated and the module system is demonstrated. The range checking of the radio is discussed and demonstrated. The receivers for this radio are shown a 14 channel receiver and a seven channel. Many different features are demonstrated available with this radio. Hi Tec receivers are up next the Optima 9 and Optima 7 are shown with BODA aerials and the ability to power these receivers with a seperate battery pack. Next is the Airtronics SD10G, switch positions are demonstrated and the ability to assign and switches for sailplane use. This radio uses the FHSS way of 2.4ghz transmission and the screen size although small is still useful. The DVD mentions that the SD10g is a very powerful system with many modes and functions. The radio is LIPO ready and these batteries can be easily used. The receiver shown is a 10 channel unit and also shown is a six channel receiver. Next up is radio conversion, buying modules for older radios many different types of modules are shown allowing conversion of all different types of radios.

or Problems of upgrading older radios are discussed including reduced latency time. The reasons for changing to 2.4ghz are discussed next including the prevention of being able to shoot down other peoples models. Demonstrated next is how to bind the four different radios shown in the DVD. The way the radios bind is well explained including how the receiver talks to the radio when binding. Futaba is the first receiver bound and this goes well without a problem, Next is th 10SG this also binds easily and this demonstration clearly shows how to bind this radio. The Aurora 9 is next and this demonstration also shows how easy it is to bind this radio. The JR 11x follows with this radio also binding easily and the way to bind is well demonstrated. Problems with bind procedure are discussed and the manual is recommended as the best way to learn to bind. Latency is the next thing discussed, the speed the radio transmits to the receiver, The 10SG is the quickest followed by the Futaba 12 FG, next is the JR 11x and finally the Hitec aurora 9 having the slowest latency. The little effects of different latency in real time are discussed showing all systems work fine. The problems of using slow servos and there effects are well defined explaining the problems slow servos cause. Other latency problem are mentioned including number of mixes and pushrod hysteresis and the use of 6 volt packs to reduce latency. 2048 resolution is discussed with the differences is signal rate discussed thoroughly.

The batteries required for 2.4 ghz receivers is the next topic, minimum voltage and other problems are mentioned. 5 cell packs are recommended for 2.4ghz as are other packs including Hyperion packs and flight packs for hand launch sailplanes. The problems with brown out is the next topic covered with demonstrations with a model with an attempt to produce a brownout, close monitoring of battery packs is shown to be important when preventing brownouts. Eventually the model browns out at 3.1 volts. Antennas are the next topic covered, the placement required and the best place to have your transmitter aerial, also discussed is receiver aerial placement and the best place for the receiver aerial. The optimum aerial placements are demonstrated. The BODA aerial used on the HiTec receiver is up next and the way this aerial works. Running the aerials at 90 degrees is clearly shown as the best setup for 2.4 ghz receivers.

. Receivers with there cases removed are the next topic showing the internals of a 2.4ghz receiver and how they work. Different types of aerials are shown next and the way in which they work and how to shorten these aerials by looping the aerials in the fuselage. The next topic is 2.4ghz shields these include all metals, carbon fibre, fuel and ballast tanks and others. The next part of this DVD is an installation in a small 2meter model, Paul Naton removes the old receiver and installs a 2.4 ghz receiver showing the best place to mount a 2.4ghz receiver. Next up is another radio install this time in a Mach 1.5 wingeron slope soarer using the Optima 9 hitec receiver. The installation goes well the receiver fits nicely and the aerials are at 90 degrees. The next installation is in a hand launch glider two gliders are demonstrated, the right batteries to use and the necessity to run the antennas outside the fuselage. How to run the antennas is clearly demonstrated and in what alignment for them to be in. Installation 4 is the next topic this shows the installation of a 2.4 ghz receiver in an f3X model. The JR 11x is used in this installation, discussed is what construction your f3x model is made from and the effects on reception this can cause and the possible need to run the aerials externally.

The correct positions are clearly demonstrated on the demonstration model. Installation 5 is in an E-Glider an electric glider, the importance of keeping aerials away from motors is discussed also the importance of keeping receivers away from the motor wires and the importance of keeping receivers away from batteries. BEC systems are the next topic and the problems of pulling too many amps from the BEC to the receiver causing a failure. Many different BEC problems are discussed using on screen text diagrams. The next topic is called fail or safe and discusses the failsafe function on 2.4ghz systems, different types of failsafe are discussed and different strategies these include hold and setting the surfaces to a set position. Range testing is the next part of this DVD and the importance of this test is clearly defined. The radio demonstrated is range checked and the best ways to do these test is clearly shown including a circular test shown by diagram. Functional tests of range are clearly demonstrated with the model in different positions. The data logger is then checked with some fades and 2 holds which is pretty good considering the tests completed. The final test is a walking range check, walking away from the transmitter to check the range. Overall an informative DVD with a lot of information, well worth purchasing.

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Hand Launch Master Class One
The first topic covered is preparation tips. A new model is shown and the instructor recommends thoroughly testing the model in the workshop before flying. This includes checking linkages and other parts of the sailplane before flight, all different types of checks are demonstrated and problems that can occur. The next thing demonstrated is the actual movements of the control surfaces, the problems with a double neutral where the surface does not return to neutral are shown. Elevator centering is shown next and the importance of this surface centering properly Thorough testing of the model before flight is thoroughly explained.

The next topic is set the CG, the first thing required is to make a reference point at the recommended CG. Ways to mark the CG are clearly shown with two points one with the wing on and a mark with the wing off. Personal choice of the cg position is dicussed next as is setting the cg at the most forward point for flight testing and slowly moving it back. How the CG efffect flight is also discussed as is the need to always secure any lead in the model and how to secure lead in DLG. The next topic is decalage, decalage is the angle between the elevator and the wing, the problems that can occur are shown with a diagram, very informative. The next topic is throwing blade tips, different throwing pegs are discussed including the evolution of throwing in DLG. The new pegs used for launch are shown next, with the advantages of these new style pegs clearly demonstrated. The way to glue in wing pegs is thoroughly explained, useful information. The need for the throwing peg to be as far back as possible behind the CG is shown to be very important. The next topic is Radio Setups, the need for simple setup to minimise pilot work load are clearly shown and the need for flight modes to optimise the sailplane in flight.

Typical flight modes are launch, thermal and fast cruise and the way to use these flight modes is explained. The next topic is aileron to rudder mix the model demonstrated has aileron to rudder mix in all flight modes. Snap Flap is the next topic this is elevator to wing camber mix, this mix means that elevator input changes wing camber increasing pitch authority in the model and the importance of making sure you get enough camber with small changes. The next topic is elevator travel and the need for a lot of elevator throw when launching and the throws required. Next topic is continuity the need for common model setups so that different models fly in a similar way. The need for servo commonality is discussed and the need for easy trimming. The way to set up models for continuity is clearly explained during this part of the DVD. The next topic is CG test, a flight test is shown here with a model performing a dive test, the dive test shows the demonstration model to have a good CG setup. Problems with a nose heavy setup are discussed and the problems that can occur a and a nose heavy dive test is demonstrated and the porposing that can occur. The inverted dive test is up next the problems with being nose heavy and tail heavy are clearly demonstrated.

The next topic is launch mechanics, the similarity between a golf swing and a HLG launch are shown as a comparison, the need for the optimum launch. The best ways to launch are thoroughly discussed the mechanics and the way to do it. The beginning and finish of the launch and the best way to do this are clearly explained. Improving launch technique is clearly discussed with practical ways to achieve this. Problems that can occur when launching are discussed the need to practice without a model to get the launch right. The next topic is Common Mistakes, this includes launch problems and not following through when launching and also problems with an improper release. Up next is Just Throw It as the next topic this shows a demonstration of a model being launched showing the proper technique this is also shown in slow motion. Many more launches are shown clearly demonstrating correct launch technique slow motion is also used in this demonstration. The next topic is The Glove this discusses the use of a glove when launching DLG helping to protect the hand when launching and also the need to cut the thumb area form the glove to allow the radio to be used. Next topic is after release the first tip is always launch into the wind to increase height and safety and how wind provides more energy for the launch.

Launch pre sets and there used is explained and the need for a switch for this setting. Changing to thermal setting when at three quarter launch is also demonstrated as are optimum push overs at the end of the launch. The next topic is Lift on Launch, this is a discussion of launching a DLG in lift and also in sink using a small model to demonstrate the different effects and the need to now your average launch height so you now when when you launch into lift. The next topic is Wind Effects, this is launching in different wind speeds light wind launching is discussed, and also high wind launches and the need to use less elevator as the wind increases. Next up is Launch Clinic, this shows a demonstration of a perfect launch, another launch follows and then a demonstration of wrong presets in launch mode, the model launches in a backward arc and over rotates, not good!!

More launches follow with a demonstration of a rearward CG. A diagram follows showing the problems that decalage angles can cause with positive decalage and how to adjust for perfect decalage when launching. The next topic is turn and burn, a small model is used to demonstrate different techniques when launching and turning when going to a thermal. Actual launches of this turn and burn startegy are shown with the model flying to the known lift position with good launches demonstrated. The next topic is finding lift air reading is demonstrated using the streamer on the radio to read the air, a launch follows but no lift is encountered, the model is launched again and again no lift was encountered but the launches where good.

Different conditions are discussed next with strategies to use in different conditions and the speeds to fly in different air. Another launch follows and lift is encountered and although the model is not flying smoothly a good flight follows. A discussion of the flight is made with good and bad points of the flight discussed. Another launch again initiated and good height is achieved this flight continues until a small thermal is encountered near the end of the flight but the model does not climb out in this small bubble. Next is another launch this flight does not go to well a short flight follows. Again another launch the model circles and another short flight follows. During these flights thermal techniques are discussed, useful information during these hand launch flights. The next topic is Rudder Mixing how to correctly set rudder mix is demonstrated on a DLG, a diagram is used to illustrate adverse yaw and its effects and the resulting inefficiency, another diagram shows the correct setup. Percentage rates to be used are shown 25-50% and the need to have enough mix to get rudder deflection with small inputs the need and way to get a proper rudder mix are clearly shown. The next topis is the rudderless method, this DLG without rudder control, the positives and negatives of models without rudder control are discussed and shown next is the differential required when setting up these style of model.

Some tips for rudderless DLG are also discussed.

Flight demonstrations follow and the model flys quite well as good as any other. The next topic is Air Tim demonstration launches are done and no lift is encountered, different flight techniques are discucssed during these launches these discussions are excellent and are of good advice. Eventually after another launch lift is encountered and the model climbs out strongly with good drift technique demonstrated the pilot bails out of this lift and no further lift is encountered. Minimum sink technique is demonstrated these techniques are clearly shown. During these demonstration flights there is excellent discussion of tactics and how to read air. Another flight eschews and good lift is encountered one of the better flights shown. Many flights where shown and were educational. The next topic is Energy management the ability to get the best flight times possible using the energy in the model different energy management uses are discussed. The basic energy management tool is the flaps and elevator to flap mix is discussed.

Flight demonstrations follow with different energy management techniques discussed including porposing when landing.

The next topic is Wing Loading, this is the use of ballast and how it works and what conditions to use ballast in, advantages and disadvantages are discussed and the lift required when using ballast is also mentioned. The importance of practicing with ballast is clearly mentioned. How to mount ballast is shown next, under the wing! Which looks to be a good spot!! Another important point when using ballast is to check the CG. The next topic is Dead Air Time, this is flying in dead air to check the optimum setup in these conditions and to fly as efficiently as possible. Demonstration flights follow with the settings shown to be in good order. The next topic is called Practice the out and in this is finding lift by reading the ground signs and then flying in and out of the lift by climbing for a short time landing and relaunching into the same air. A demonstration flight follows showing this technique in action. Overall an interesting and informative DVD well worth purchasing.

Hand Launch Master Class 3
The first topic covered is preparation tips. A new model is shown and the instructor recommends thoroughly testing the model in the workshop before flying. This includes checking linkages and other parts of the sailplane before flight, all different types of checks are demonstrated and problems that can occur. The next thing demonstrated is the actual movements of the control surfaces, the problems with a double neutral where the surface does not return to neutral are shown. Elevator centering is shown next and the importance of this surface centering properly Thorough testing of the model before flight is thoroughly explained. The next topic is set the CG, the first thing required is to make a reference point at the recommended CG. Ways to mark the CG are clearly shown with two points one with the wing on and a mark with the wing off.

Personal choice of the cg position is discussed next as is setting the cg at the most forward point for flight testing and slowly moving it back. How the CG effects flight is also discussed as is the need to always secure any lead in the model and how to secure lead in DLG. The next topic is decalage, decalage is the angle between the elevator and the wing, the problems that can occur are shown with a diagram, very informative. The next topic is throwing blade tips, different throwing pegs are discussed including the evolution of throwing in DLG. The new pegs used for launch are shown next, with the advantages of these new style pegs clearly demonstrated. The way to glue in wing pegs is thoroughly explained, useful information. The need for the throwing peg to be as far back as possible behind the CG is shown to be very important. The next topic is Radio Setups, the need for simple setup to minimise pilot work load are clearly shown and the need for flight modes to optimise the sailplane in flight.

Typical flight modes are launch, thermal and fast cruise and the way to use these flight modes is explained. The next topic is aileron to rudder mix the model demonstrated has aileron to rudder mix in all flight modes. Snap Flap is the next topic this is elevator to wing camber mix, this mix means that elevator input changes wing camber increasing pitch authority in the model and the importance of making sure you get enough camber with small changes. The next topic is elevator travel and the need for a lot of elevator throw when launching and the throws required. Next topic is continuity the need for common model setups so that different models fly in a similar way. The need for servo commonality is discussed and the need for easy trimming. The way to set up models for continuity is clearly explained during this part of the DVD. The next topic is CG test, a flight test is shown here with a model performing a dive test, the dive test shows the demonstration model to have a good CG setup.

Problems with a nose heavy setup are discussed and the problems that can occur a and a nose heavy dive test is demonstrated and the porposing that can occur. The inverted dive test is up next the problems with being nose heavy and tail heavy are clearly demonstrated. The next topic is launch mechanics, the similarity between a golf swing and a HLG launch are shown as a comparison, the need for the optimum launch. The best ways to launch are thoroughly discussed the mechanics and the way to do it. The beginning and finish of the launch and the best way to do this are clearly explained. Improving launch technique is clearly discussed with practical ways to achieve this. Problems that can occur when launching are discussed the need to practice without a model to get the launch right. The next topic is Common Mistakes, this includes launch problems and not following through when launching and also problems with an improper release. Up next is Just Throw It as the next topic this shows a demonstration of a model being launched showing the proper technique this is also shown in slow motion.

Many more launches are shown clearly demonstrating correct launch technique slow motion is also used in this demonstration. The next topic is The Glove this discusses the use of a glove when launching DLG helping to protect the hand when launching and also the need to cut the thumb area form the glove to allow the radio to be used. Next topic is after release the first tip is always launch into the wind to increase height and safety and how wind provides more energy for the launch. Launch pre sets and there used is explained and the need for a switch for this setting. Changing to thermal setting when at three quarter launch is also demonstrated as are optimum push overs at the end of the launch. The next topic is Lift on Launch, this is a discussion of launching a DLG in lift and also in sink using a small model to demonstrate the different effects and the need to now your average launch height so you now when when you launch into lift. The next topic is Wind Effects, this is launching in different wind speeds light wind launching is discussed, and also high wind launches and the need to use less elevator as the wind increases. Next up is Launch Clinic, this shows a demonstration of a perfect launch, another launch follows and then a demonstration of wrong presets in launch mode, the model launches in a backward arc and over rotates, not good!! More launches follow with a demonstration of a rearward CG. A diagram follows showing the problems that decalage angles can cause with positive decalage and how to adjust for perfect decalage when launching. The next topic is turn and burn, a small model is used to demonstrate different techniques when launching and turning when going to a thermal. Actual launches of this turn and burn startegy are shown with the model flying to the known lift position with good launches demonstarted. The next topic is finding lift air reading is demonstrated using the streamer on the radio to read the air, a launch follows but no lift is encountered, the model is launched again and again no lift was encountered but the launches where good. Different conditions are discussed next with strategies to use in different conditions and the speeds to fly in different air. Another launch follows and lift is encountered and although the model is not flying smoothly a good flight follows. A discussion of the flight is made with good and bad points of the flight discussed. Another launch again initiated and good height is achieved this flight continues until a small thermal is encountered near the end of the flight but the model does not climb out in this small bubble. Next is another launch this flight does not go to well a short flight follows. Again another launch the model circles and another short flight follows. During these flights thermal techniques are discussed, useful information during these hand launch flights. The next topic is Rudder Mixing how to correctly set rudder mix is demonstrated on a DLG, a diagram is used to illustrate adverse yaw and its effects and the resulting inefficiency , another diagram shows the correct setup. Percentage rates to be used are shown 25-50% and the need to have enough mix to get rudder deflection with small inputs the need and way to get a proper rudder mix are clearly shown. The next topis is the rudderless method, this DLG without rudder control, the positives and negatives of models without rudder control are discussed and shown next is the differential required when setting up these style of model. Some tips for rudderless DLG are also discussed. Flight demonstrations follow and the model flys quite well as good as any other. The next topic is Air Tim demonstration launches are done and no lift is encountered, different flight techniques are discussed during these launches these discussions are excellent and are of good advice. Eventually after another launch lift is encountered and the model climbs out strongly with good drift technique demonstrated the pilot bails out of this lift and no further lift is encountered. Minimum sink technique is demonstrated these techniques are clearly shown. During these demonstration flights there is excellent discussion of tactics and how to read air. Another flight eschews and good lift is encountered one of the better flights shown. Many flights where shown and were educational. The next topic is Energy management the ability to get the best flight times possible using the energy in the model different energy management uses are discussed. The basic energy management tool is the flaps and elevator to flap mix is discussed. Flight demonstrations follow with different energy management techniques discussed including porposing when landing. The next topic is Wing Loading, this is the use of ballast and how it works and what conditions to use ballast in, advantages and disadvantages are discussed and the lift required when using ballast is also mentioned. The importance of practicing with ballast is clearly mentioned. How to mount ballast is shown next, under the wing! Which looks to be a good spot!! Another important point when using ballast is to check the CG. The next topic is Dead Air Time, this is flying in dead air to check the optimum setup in these conditions and to fly as efficiently as possible. Demonstration flights follow with the settings shown to be in good order. The next topic is called Practice the out and in this is finding lift by reading the ground signs and then flying in and out of the lift by climbing for a short time landing and relaunching into the same air. A demonstration flight follows showing this technique in action. Overall an interesting and informative DVD well worth pucrchasing.


That’s it from the Thermal Circle I thoroughly enjoyed writing these reviews!!!
Hayden Daley 2012