OS91Ps unsmooth running (Revlock problem)

[Knud Pedersen DENMARK]

Using Revlock / S9525 / GY601 / OS91PS / MPII / 10%Wilcat

Due to tail hunting in norm.flight, when Revlock is ON.
I have offset my throttle arm, and decreased the servoarm length.(Going to bee tested in the weekend)

The hunting can be coursed by unsmooth OS91PS run at low rpm.
I use the OS return needle.

Wondering:
1. Will an cat eye modification improve the smoothness???
2. Will adding sims under the cylinder head improve the running smoothness??

:cry: :cry:

[Bonsai]

I used an extra head shim on my os and it was alot smoother ..but engine tuning is probbly where your problem lies... Also make sure that you adjusted the 601 tailrotor push rod for zero trim in a hover while it was in the RATE mode and NOT the Heading hold mode..This also can cause the tail to hunt
Dean