tail wont hold

[J Amo]

Hello I have a trex 500 with the 720blk and I recently put a larger pinion on it
to get more head speed and I can notice the tail dosent hold like it used too?
I turned the tail gain up many times to the point where the tail would whip back and
forth so I turned it back down to 60. I notice at the end of my flight when I am trying
to land the heli will just spin. Its ok at the beginning of flight mostly at the end is where
I lose tail control. Maybe a tail servo going bad or is there another adjustment in the
software that I should be using to adjust for the increased head speed. Thanks

[rs2k]

How well is the head speed holding? I know head speed variations can lead to tail issues.

How is your tail not holding? Is it wagging? Is it hunting? Is it drifting?

[J Amo]

tail seems ok in forward flight easy flying after I turned the gain back down.
when I do pitch pumps the tail wont hold no matter how high the gain is set.
then when I go to land just hovering the tail wont hold. It seems like the gyro
gets confused at the end.

[dcope17]

I have flown my 4 SK720s multiple times and have never had any of them confused by the end of the flight.
I can't assume anything but it's possibly the tail servo.
Georgi will ask you to post up a screen shot of your tail settings so you might as well do that before he asks.

[georgi UK]

=] georgi will ask you to post a playback log! I think your servo may be going South?

[ugoferri]

Get slightly longer tail blades, i had that issue got longr blades with a sk540 issue solved, u r gettin higher headspeed by torque u need to compensate mechanically. My 2 cents.

[ugoferri]

Whats ur blade pitch??

[omerco]

Originally Posted by ugoferri

Get slightly longer tail blades, i had that issue got longr blades with a sk540 issue solved, u r gettin higher headspeed by torque u need to compensate mechanically. My 2 cents.

+1

AND plus a log for Georgi