Pitch Up immediately weight off wheels

[RhinoDrvr]

Let me start this post with saying; while I do not have any time in the real F4U Corsair, I do have a fair amount of experience in the T-6 Texan, so the flying qualities of a radial engine, high performance tailwheel are familiar to me.

I'm experiencing a rapid pitch up as soon as the wheels leave the ground in the Corsair.  Only present with the flaps up.  If I attempt takeoff with the flaps extended, the transition airborne is much smoother.  This doesn't jive with how airplanes generally leave the ground.  Control inputs shouldn't drastically change as the wheels leave the deck.

Is this replicable by anybody else / is it something the dev team is aware of?  Of note, I'm not pulling the airplane off the ground early, just letting the tail fly up, and then holding a slightly positive pitch attitude and allowing it to fly off on it's own...

Edited June 26 by RhinoDrvr

[Mike Busutil]

Are you trimmed for the standard +1° up elevator trim a flap takeoff?

Have you tried neutral trim or down trim for no flap takeoffs?

[_Hoss]

It doesn't matter if I have flaps up or down, it goes nose up really fast with recommended Pitch trim settings. So I don't use them. The yaw goes nuts, too after wheels up. So I have come up with my own take off trim settings for the Hog. I've got a K51 trim box and I can control the speed of the trim in axis tune. But it still feels wonky to me. Carrier take offs are completly different.. seem tame by comparison.

 

[Mike Busutil]

Odd. Are you using a dead zone for pitch control?

[PL_Harpoon]

Based on what I've noticed previously, this could be connected to pitch movement caused by the gear. 

With +1 pitch trim and gear down the aircraft pitches up below about 160* kts. The effect disappears above that speed.

 

*I'm writing this from memory, I might be wrong about the exact speed.