16-Jul-20 - 10:36 AM

Recommended Sailplanes - F5J

Written by Hayden Daley - 14 October, 2008.
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Plus X F5J and F3J Plus X- the World best F5J wing from Joe Wurts:

  • The best thermaling and penetration performance combined in one wing;
  • 6 servos give the best combination of aileron and flapperon differential for the highest climb performance during circling in thermals;
  • Wide flap has extremely smooth airfoil in all flight mode;
  • Extremely possibility for brake due 6 servos wing;
  • Plus X/5 has five short parts wing for easy traveling with luggage limit size box;
  • Plus X light- strong version with FAI limits weight;
Plus X – unique easy-taped-assembly two part fuselage
  • Two short parts of the fuselage for easy traveling;
  • Easy and reliable ballasting fuselage;
  • VM famous snap fixed system for carbon canopy;
  • Unique light weight and strength due Carboline preform for the boom and pod;
  • Easy mounting system for servos, inside the tail boom;
  • Carbon pushrods for tail servos is installed already;
  • The ability to trim the nose (on 54mm) to diameter of 38mm to get the right CG with a heavy motor;
Plus X – extremely low drag, high efficient and light tail
  • High aspect ratio fin with unique efficient thin airfoils from Joe Wurts;
  • Extremely rigid and light elevator and rudder control system;
  • Easy mounting fin and stabilizer;
  • Amazing high strength and light weight of the tail.

PLUS X
Length 1764 mm (69.4")
Wing span 3973 mm (156.41")
Wing area 77.2 sq dm
Wing airfoils original by Joe Wurts
Wing aspect ratio 20.4 %
Horizontal stabilizer area 7.98 sq dm
Horizontal stabilizer aspect ratio 7.76
Vertical stabilizer area 5.15 sq dm
Vertical stabilizer aspect ratio 3.17
Control surfaces ailerons, flapperons, flaps, elevator, rudder



PLUS X Wing

Plus X- the World best F5J wing from Joe Wurts:

  • The best thermaling and penetration performance combined in one wing;
  • 6 servos give the best combination of aileron and flapperon differential for the highest climb performance during circling in thermals;
  • Wide flap has extremely smooth airfoil in all flight mode;
  • Extremely possibility for brake due 6 servos wing;
  • Plus X/5 has five short parts wing for easy traveling with luggage limit size box;
  • Plus X light- strong version with FAI limits weight;
  • Wing mounted receiver with one wire connection due SBus/ XBus hub in the fuselage;
  • 8 channel receiver possibility due Y-cable for flaps.



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Simitri F3J Information The Simitri F3J is the newest addition from the maker of the Euphoria. They had honed their skills on the Euphoria, making it one of the best flying models and values out there! Simitri is a step above the quality of many of the models we have seen. The fit and finish are A quality, and the execution of carbon line spread tow, and the composite is top shelf. The wing is carbon line fabric, with a new spar technology that is very strong, and very lite. The polyhedral wing circles excellent with the trilerons, launches well and will hang with the best of the best! The wing linkage has LDS installed, ready to install servos of your choice, we like the MKS 6110's and 6130s in the flaps. The Rohacell CNC tails are flawless and very light. They can be removed for transport, and with the 3pc wing, this model is great for breaking down well. The fuse pod is kevlar 2.4 friendly too Features

  • New platform gives better penetration and tighter circles
  • Extreme power in the elevator
  • Harder pings off launch
  • Precise turnovers
  • Lower-positioned nose helps in the landings
  • Shape, airfoils, tail and fuse cross-section means better strength and lower drag
  • Lighter fuses and wings
  • New materials improve circling at low speeds
  • Moulds and building techniques make parts lighter, stronger and with better finish
  • Ailerons at the end of the tip give you an even more agile model
  • Stronger stiffness and resistance with high pressure production technology
  • Wing, fuselage, rudder and elevator are full carbon

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Pike Prestige

First of all thanks to Philip Kolb for constructing an exceptional model in the F5J world. He was not influenced by various fads in the F5J world and used all his knowledge, experience and best available software to construct the amazing PRESTIGE 2PK.To this we added the full rohacell core to the design, the whole model is made in heated aluminum molds to a very high temperature. This technology creates a light, strong and stable platform for years of flying.It is worth mentioning a few properties we have found very nice after flying this model for a while.

In circling the model as expected did not have a need for extreme dihedral joiners since the aerodynamic design and airfoil changes does that work in a better way than increasing dihedral. It was first produced with 6 degree tip joiners and then we added an 8 degree alternative. It has also been flown a lot with 5 degree joiners with good success in low altitude thermalling at EC F3J 2019. There should be no need for extreme joiners though this is again a personal preference. Circling camber can be extreme (5-8 degrees) while still maintaining speed during because of a new tail design that keeps the energy better (less drag). This means high bank angle is possible and yet still keep the high lift in a tight thermal.The large and newly designed rudder makes it possible to yank the model into any thermal you find.

As you will find described in the designer Philip Kolb’s writeup the penetration in all camber settings is very good because of the new tail design. Now you can change camber at any point without losing flying energy like we see in many airfoils. The model now just speeds up to the desired speed/camber setting and keeps that for a trip over the whole airfield thru lift and sink. Night and early morning testing have shown sink values as good as 0,35-0,4m/s in distance mode (1mm up along the whole trailing edge and measured by altimeter). That means search mode for thermals is very efficient and a fantastic glide ratio. Flying in full camber in the same conditions gives values in the range of 0,25-0,3m/s but less area is covered.

Landing the Prestige 2PK is easier than ever. No aileron setup is needed (aileron goes to neutral when brakes applied). Only flaps and elevator compensation. Still the model slows down to a crawl and pushing over is easy as the new elevator keeps the energy well even with full flaps applied. The rudder is also better and bigger and with the new high dihedral middle and aerodynamic airfoil changes it corresponds well to rudder input and is not as much affected by sidewind as earlier models. Though it should be said that the lightest layup has very light tips and heavier tips (inertia) might be preferred if the landing area have lots of sidewind and/or turbulence.The nose is removable. It is made longer than needed and can be shortened ( max. 100 mm) according to engine weight and lipo. Install equipment and shorten nose to fit preferred CG. The original nose has a diameter of 32 mm. It is designed to fit cheap and reliable outrunners for lighter versions. Very soon we will produce a nose cone with slimmer diameter of 30 mm.The servos and receiver are located in the fuselage under the center wing therefore there is enough space in the front for the motor, controller and lipo. Battery size from very small and up to 2300mah can be used as much care is taken to a very thin but almost square fuse in the front area.

The complete wire harness is built into the center panel and the central connector is ready installed. Wire harness for fuselage is also delivered ready made.Servo compartments in wing are laminated on all sides with carbon fabric, so a very strong box has been created in which the IDS system can be mounted. We recommend to install IDS for KST X10 mini, JRDS 181 or 189 for flaps and MKS 6110HV in the tips. For fuselage are suitable servos size like MKS 6110 HVIn the future will also produce a V tail version Although it is a new model a few pilots had it before WCH F5J 2019 and only had the chance to test for a short time.So in the biggest F5J competitions of all times the pre contest 4th WCH World F5J Challenge only 3 pilots flew with the Prestige 2 PK. All 3 was pilots were in Flyoff out of 190 pilots. Robert Bonafede won the 4th World Challenge and finished 3rd at the World Championship that followed.Other pilots with the Prestige 2PK achieved a lot of podium positions in a lot of other F5J competitions. We wish everyone who purchases Prestige 2PK many great experiences and sporting successes.

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PIKE DYNAMIC F5J

Producing a new model that will beat the competition is very difficult, you can be certain that we did it. The new Dynamic is more than you might expect at first sight. Although visually similar to the Perfection the Dynamic is an all new design. Two of the most important qualities of a F5J model are the ability to circle at very low altitudes while in a thermal and to be able to move around the sky with minimal loss in height. The Dynamic excels in both areas, combined with low flying weights and improved controllability in landing we believe the Dynamic is the perfect choice for F5J pilots. The Dynamic was designed using CAD/CAM technology, all parts are completely produced out of carbon fibre. Dynamic vs. Perfection

  • New F5J specific airfoil- Exact camber changes must be made for each Flight Mode, this allows unbelievable range in speed.
  • Thinner Fuselage
  • Increased dihedral on wings tips allows for increased turning performance. Centre joiner can be 3 or 5.3 degrees. Wider flaps for increased landing control and wider ailerons for more precise handling.
  • RTF weight starting at 1100g.
  • Control of flaps and ailerons is available with our LDS system http://www.f3j.com/precision/lds/index.htm or delivered with 2mm GFK control horns
  • Elevator and rudder are produced using machined solid core foam technology with low weights.

The PIKE Dynamic is delivered with pre-bonded pushrod housings in the fuselage, wire harness installed wings and supplied for fuselage, GFK control horns (if customer doesn’t order LDS) for ailerons and flaps, couplers for pushrods in fuselage, and 2mm carbon fibre pushrods. Many pilots want extremely low flying weights but low weight won’t do you any good if you can’t get back to the landing tape. In F5J, competition results are often decided by who can catch a thermal and return from downwind.

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F5J Shadow Electric

The Shadow F5J is the electric version of the Shadow F3J model. The F3J Shadow was campaigned by many pilots at the 2008 F3J world championships, and the electric version will be just as competitive in F5J events. The Shadow E has a wingspan of 3654mm, a fuselage length 1618mm; and a wing area of 73dm2. Airfoil used is the HN507M1 a Norbert Hayes wingsection and a tail section HN33S and is available fro Airstrike with a X-tail only. The Shadow E is available in Carbon and other version. Overall a suburb model from the Nan Company.

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F5J Supra E

The electric version of the Supra, the Supra E is a highly competitive F5J model. The Wingspan of the Supra E is 3400mm,it has a wing area of 68,87 dm2 and an empty weight of 1400g, this is the models weight without RC equipment or propulsion system. The wingsection is the AG40 transitioning into the AG43. The model is ballast ready, a ballast tube for windy weather is already installed. The model uses aileron, elevator, flap and rudder controls and utilises a strong carbon/kevlar fuselage. A highly competitve model ideal for F5J competiton. The Supra E is available from Airstrike Australia.

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F5J Graphite 2

The Graphite 2 from FVK models is an F5J model distributed by the Airstrike company. The Graphite 2 has wingspan of 3100mm, a wing area of 64,5 dm2 anda length of 1515mm. The model is available in light weight and full carbon versions. This model has the MH 32 wingsection that has been used on many successful F3J models and elevator section is HT14 transitioning into the ht12 section. The model uses flaps aileron and V-tail for control, and the full span surfaces allow for different full span flap settings. This model is well priced and competitive in F5J events. I recommend the lightweight version of the Graphite 2 as the model is not being launched by winch. FVK models are well made expect good quality moldings from this model.

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