tower pro 9g servo work with a 401
got it setup on 450 size heli and cant get it to stop wagging in hover
any ideas cheers

your tail is probably wagging because of the tower pro as your tail servo.  the futaba 9257 works great with the gy401.  </p>

+1 on the 401/9257, i have them on my 450 and 500, both are rock solid

If you want a bit cheaper, a 9650 will also work fine.

The Tower 9g isn't really meant for a heli rudder. If you want super cheap and better than the tower, an HS-50 will work...

Skarn