I have run one before in a 700 class Helli and I can tell you, they are very tricky to tune and they do vibrate more than an OS... Now with that being said this is my experience with this particular power-plant. There are several guys that can make one sing! I chose not to run this motor anymore. I will go on record and say It has Gobs Of Torque and just wicked pull.. but I am sold on the OS105 and the ease of tuning.
K
