Ref.

"With regards to vibration it vibrates a lot at lower RPM. This thin film and relativelly light structure make it behave as a "loudspeaker". Also the Elevator and Rudder extension leads can create further noise. What I did was to stick some foam with tape on the connectors of the leads in order to eliminate the sound created during their coliisions with the fuselage."

Fitting an "A" type Hydemount makes a huge difference to the effect of the engine vibration and the noise of the air frame. Your servos and hinges will last a lot longer, not to mention battery life, than without a soft mount.