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Finally my old dream to fly big planes become reality, couple days ago i tested 110inch Extreme Flight RC ak 54. I plan to use this plane in EXFC and ITOC competitions. Yak 54 Setup; Engine; Desert Aircraft 100L (lighter and more powerfull than old version). Electronics; Powerbox Champion for RX and Digi switch for ignition. Tunned pipe; Double RE-2 from MTW. Propeller; Vess 27A Battery; Double Flight Power EonX lite 2500mah 2s same battery is also ussed for ignition. Receiver and module; Duplex TG and 8ch Duplex R8. Servos; Hitec 7955 all around except thr. two on each aileron two on rudder, and one for each elevator side. Acessories; Kavan fuel tanks and main wheel, tower abd ball links from GR modelparts. Wingspan; 2.75cm Fuselage; 2.56cm there is already ALLO of building reviews about this nice plane, so i since time pushing me i will not go to all small details of building. Besides here is not much building at all, its very similar to 50cc Yak. Here is very informative and interesting ak building thread by Mr Rober Vess. Here you can see comparison of different engines ; http://www.flyinggiants.com/forums/fg100/42416-two-ef-110-yaks-da85-vs-da100-build-notes.html 
Simply and soft Powerbox champion installation on rubber rings. Huge fuselage allow to place equipment where you want. As you can see i use quite big 1 liter Kavan fuel tank, to be safe and have good flying time, after 10 minutes flight i still have 1/3 fuel left. 8 powerful servos have impressive torque (24kg on 6V). However i use 7V from PB champion, it give very good felling of model and also speed increase, i know some pilots using these servos connected directly to 2s lypos, but to have constant performance during all flights i prefer to use 7v from powerbox unit. In any case we need to have in mind that these servos use about 4 amps on max loading! So if you use cheaper option, regulators on your plane be sure they can handle amps these servos need. From my experience i see i can make five 10min secure flights, using double 2500mah packs. After 5 flights i use about 1600mah from each battery pack. To control such huge rudder i decide to use two powerful servos from Hitec, for 3D/Freestyle flying rudder is really important and to make new impressive maneuvers you need allot of deflection. To protect rudder servos from pull pull cables tension and get more deflection i decide to use really nice product call Tower from GR modelaprts. This detail is much lighter than full servo tray. 
Such towers and more cool acessories are available from GR modelparts company from Brasil. Jersey modeler 2.5gal fueling system work perfect for me already second season. Ready steady go;) Most of us heard that bigger planes fly better, well this is 100 percent true. Yak fly easier than my simulator and indoor planes. Plane is very stable and predictable in all rolling maneuvers, so far i made only 10 flights, and i see with some CG adjustments and small changes Yak will be 3D beast and perfect machine for freestyle competitions! 
This project would not be possible without help and support of these companies; www.extremeflightrc.com www.desertaircraft.com www.powerbox-systems.com www.jerseymodeler.com www.mtw-silencer.com www.jetimodel.com www.flightpower.co.uk www.grmodelparts.com www.versaillesmodeles.com www.aerobertics.be www.hobbycenter.by BIG thanks goes to all these companies and nice persons behind them! Videos and more pictures come soon! |
Waiting line.
