flat spin and knife edge
 

Hi all, as an intermediate/beginner flyer here in sunny England, im at that stage where i can do the usual acrobatics but am stuggleing to execute a knife edge, flat spin and a prop hang. I have a Lazer 3d a fantastic slow flyer with a 46 irvine and the futaba ff9. please could some one explain these manoeuvers to me . Thanks[:@]

RE: flat spin and knife edge
 

Cheers!

First off all 3 manuevers you mentioned are MUCH easier with an AFT CG- have you moved the CG back as you got used to the airplane?

Secondly, you need as much movement as possible on all flying surfaces. Set-up dual rates so you can have your normal settings for regular flying then increase the movement- 9Use expo. to make your servos less sensitive around the center of the stick- and start purty high with these moves--) If you do not have a computer TX with these features, get one- ;)

The Knife edge is all about having enough rudder "throw" to sustain flight using the engine and rudder only- just do 1/4 roll and input rudder until the plane can sustain the same altitude... Coupling might need to be worked out (Plane wants to roll out either way from that pos.) Push the CG back a little, get your rudder to move as much as possible- and give it a shot!

The flat-spin is also a maneuver that is easier when a bit tail heavy- (Even lower fuel level will make a difference-CG) I will let a 3D expert explain the actual maneuver since I am inconsistent when flatness is concerned! :D

The prop-hang or "Hover" takes ALOT of power, alot of movement on EVERY surface of the aircraft, and also needs a rearward CG... Just pull up and start practicing!

RE: flat spin and knife edge
 

To follow on from the above;) I'm not exactly an "expert", but who is?:D

The flat spin.
Enter a spin as normal (sticks in bottom corners) and then gradually take the aileron out, it should start to flatten, then you'll probably find you need to feed in opposite aileron to get a "proper" flat spin. In a lot of cases flat spins are easier inverted (don't ask why? someone will explain if you want though;))

RE: flat spin and knife edge
 

Thanks very much, no one has mentioned the cg to me so that could be my proplem. brillient advice cheers

RE: flat spin and knife edge
 

Flat spins with some aircraft require some throttle. My spad spins best with full power. I also give opposite AILE after it flattens out. My Funtana on the other hand likes about 1/3 power with neutral AILE. Every plane I have flown is different. Just get up high and try several things.

David