Model construction: 2002
Features of the model:
Wingspan: 1.85 m
Weight: 1.2 kg
Motor: 2 Speed 400 7.2V live
Propeller: Graupner 6×4
Autonomy: 10 minutes
Not realy a plane, not realy a glider, and silent flight (relative) thanks to electric motors. Really this inset plan from RCM magazine, due to the talent of L. Buissyne, worth to be built. True, the construction is delicate, strong twisting, ribs and stringers do not touch the work plan, but it is doable. And then a big advantage …. there is only one wing to do.
Take-off:
It is better to be assisted in this delicate phase. The launch must be energetic and horizontal (or even slightly upwards). Let it pick up speed by letting the wing drop slightly, then gently pull the elevator. By following this procedure, I have never had any unpleasant surprises.
In flight:
The power of the two Speed 400 is sufficient but there is no question of vertical climbing , on the contrary it must be allowed to gain altitude while maintaining speed. If it slows down a little too much, the commands no longer give the impression of responding and it flies alone (no worries, however, because then the speed is very low). The controls resume bite as soon as you push the throttle.
What is most surprising with this machine, it is the range of speed usable: of slow in spiral in thermals (wing load of less than 30gr / dm2) to full speed in low pass on the track (the whistling of Speed 400 adds to the speed effect). Regarding aerobatics, we can say that this is not his cup of tea. The loop goes well while keeping speed, as for the rest, I did not try …. it is however not the requests of my entourage who missed: o)
Landing:
No difficulty, classic approach, easy axis taking, we let it slide and we round it off copiously.