ballwall

i cant get the tail to straightn out i tryed the portion mix on the 4in 1 and the rudder trim is full right and still needs more right in put

Tinkman

The tail rotor could be binding. Also, after each adjustment to the 4-1 you need to unplug the battery and let it re-initalize for the changes to take effect.

Joaquin

ballwall

changed the tail motor out for a new one unplugged and plugged for each setting any ideas

Tinkman

If the motor isn't rubbing on something causing it to drag and run slow, my next guess would be the 4-1 failing.

ballwall

ok thats for the info

siryan

that or it needs more 4 in 1 mixing need gain perhaps

siryan

yep the gain proportion ixing is tricky on these 4 in 1's but once u get how they work and how to compensate u wont be having these much problems good luck

bone56

Ballwall,

I just went through this exact problem with my HB. Very frustrating to say the least. Long story short, like you I replaced the tail motor as I assumed it was failing and continued to have the same problem. After screwing around with the 4:1 etc, I put another new motor in as I had read somewhere someone else got a bad new motor. Low and behold problem solved! It seems to me that even a new tail motor functioning perfectly has just enough power to overcome the torque from the main motor at full throttle. So a small reduction in power results in the problem you are witnessing. Good Luck and let's hear what solves your problem.. Steve