Wow great info; I have been doing some gliding testing where I toss it on to a soft surface and it seems like it wants to fly/glide quite readily. I have also been holding the plane while playing with the elevator while having the motor running and it seems like it pitchs the plane up and down with quite a bit of command so getting off the ground via a rolling start got even more confusing for me. I never even considered this new (to me) info to be the reason why it's not taking off from the ground and it really makes sense now that Ithink about it. I guess this only comes with experience. Hmmm gotta figure out how to raise that front wheel now...
ORIGINAL: opjose
As with larger Bobcat / Falcon type planes, this one has the same quirks as the larger plane.
The problem is that the plane sits somewhat level on the ground.
The rear mounted prop, tends to push the nose down at runup.
This causes the plane to have a negative angle of attack, which in turn means it will run and run and run w/o lifting off.
If it does achieve enough speed, it will then shoot up like a rocket, though usually it may not.
What you need to do is to adjust the gear so that the plane sits nose higher than the tail, giving the wings a positive AOA.