tail kicking

[q8hobbytime]

I was running my engine really rich after 2 tanks in a row i can put my funger on the case without feeling the heat so i started to lean the engine, but after that the tail started kicking, im running Gy611 my gain is 32, and i have a valcro tape on top of the sensor could that be the problem the engine current setup 1 turn on the low and 2 turns on the high so what can it be the cause

[vandelescrow]

Are you hearing a change in pitch of the engine when the tail kicks? If so it is probably still to rich. Don't necessarily go by the temp but how it sounds and looks. Is the engine spitting drops out the exhaust? To rich. When in a hover (at least 40 ft) and you drop the pitch to 0, do the RPMs stay where they were for a while? To lean. Do the RPMs pick up quick when pitch is applied again? If not to rich. How is the smoke? This depends on the fuel you use.

Concerning the gyro. Do you have good tape under the gyro? I use that green stuff that is about ¼ inch thick (cant remember the name but you will know it when you see it). The Velcro you have over the gyro is a good idea but I put a bit of foam between the gyro and the Velcro so vibrations are not being introduced by way of the Velcro.

The gyro you are using I am not familiar with but as far as the gain, all gyros are the same in this aspect, have the gain as high as you can with out the tail hunting for heading hold. Checking in hover is good but the hunting shows more in different maneuvers. I’ve been told forward flight, but once set in hover I have not had a problem in forward flight.

Lastly, check your entire tail; make sure there is not any play between the blades and the servo. Check the pitch arm, ball links, bearings, and make sure the entire system moves (when powered off) extremely free when moved by hand.