Board Thread:Questions and answers/@comment-3362895-20160507150244/@comment-27306930-20160507185746

Essentially Nerf motors are "toy" motors. They don't utilize bearings or brushes, so they're inherently noisy. Even the RM2s I've been playing with are just toy motors. The next problem is the flywheel cage. Not only is it flimsy and allows for a great deal of vibration, but it acts like a sounding box. The third problem is the crummy flywheels. They're almost always out of balance and introduce their own harmonic resonance. It's a triple threat.

There are industrial grade motors that make little or no sound, but they're crazy expensive. Better flywheels solve much of the resonance problem. And packing Styrofoam in the airspaces of the blaster should both deaden the sound and reduce the vibration.

Ooooh, I've got a great idea using expanding foam, but I have to run. Later gents.