18-Feb-20 - 09:13 AM

Recommended Sailplanes - F5J

Written by Hayden Daley - 14 October, 2008.

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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