F4U Corsair by GWS

N° of launches / Time	21	1 hour 55 mins
Wingspan	35½ "	90 cm
Wing Area	232½ in²	15 dm²
Flying Weight	» 1 lb. 1 oz	480 g
Wing Loading	» 10.5 oz/ft²	32.1 g/dm²
Wing Cube Loading	8.3 - between "Trainer" & "Aerobatic"
Motor	Cyclon Mini 3
Propeller	APC Electric 9" x 6"
Batteries	3S Kokam 1250HD Li-Po (20C cells)
Speed Controller	Castle Creations Phoenix 25 - 25A - 5 to 16 cells - BEC & Brake - Programmable cut-off
Receiver / Battery	GWS Naro R-6N/H - 6ch - PPM - 35MHz - sub-micro
Servos	Ailerons - 2 x Ripmax SD-150
	Elevator - Hitec HS-55
	Rudder - Hitec HS-55
Static motor parameters	9.0A @ 10.5V giving 6600 rpm and 95W and \ approximately 90W/lb. Thrust_XL estimates the thrust as 496 g giving a weight ratio of slightly over 1:1. This seems correct as the model feels weightless when held pointing vertically up.
Flight performance	Climbs can be maintained at 45°+ or be more scale like at reduced throttle. Level flight can be maintained at well below 1/2 throttle travel. Loops can be completed from level flight and do not require full power to complete.

10 Sep 06 - Whilst flying it Basingstoke MAC today the F4U spun in, completely out of control. Fortunately the model was completely unscathed and didn't actually hit the ground - it was sitting on top of the stubble in the field. Speaking to club members, this appears to be fairly common there when using the GWS Naro R-6N/H receiver. I think I'll replace the receiver with a longer range version before flying it again.

28 Mar 05 - Finally managed to test fly the Corsair. After a short ground run it climbed away at 45° with plenty of power in reserve. After throttling back to a cruise setting, the only trim change made was 1 click of up elevator. When throttled up the model rotates into a steady climb and is extremely stable in the air. Level flight can be maintained at well below 1/2 throttle travel. Loops can be completed from level flight and do not require full power to complete. The radio check was not quite as far as I would have like and I experienced a little interference at one point. Due to this I cut the flight short and landed after 2 mins 20 seconds. I will be moving the receiver further aft, away from the speed controller.