RC Helicopter Nitro Guide - Tuning Engine OS55 HZ 

Thanks! I looked at your video on the adjustment of .91 and was waiting to be made of .55, because the engine is used on my T-Rex 600N, too! This video was much more detailed! Hug!

@krul21 If the pilot start to do some inverted 3D maneuver... In my opinion we have to start use governor...

hello...i saw your videos just now april 25 2012 and you fine tune the os 55h..cant ask you what exactly turn the two needle..because i dont understand your language..and the Align 55h is the same tuning.. please just reply me if you have time thanks

For beginner it is necessary to use a governor?