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Porpoising during fff

Posted: Thu 14. May 2015 23:00:20
by Ktm250
I have been trying to tune my spirit unit in on my 250 and have noticed that during fast forward flight I get porpoising. Is there a setting in the spirit unit that could cause this. Could it be that my cyclic gain is to high?
Thanks.

Re: Porpoising during fff

Posted: Fri 15. May 2015 7:19:01
by ZeXx86
Yes, it could be the problem.

Also do you have flybarless lades on the helicopter?

Re: Porpoising during fff

Posted: Tue 19. May 2015 13:28:48
by Ktm250
I am assuming that they are. They are the original blades that came in the kit. It is a trex250 DFC Plus.

Re: Porpoising during fff

Posted: Tue 19. May 2015 17:44:21
by ZeXx86
Great,
make sure that frequency for the cyclic servos is not higher than 200Hz.

Pithup Compensation in the Advanced tab can be configured to 0.
You can start with Cyclic Gain value around 40-50%.