I want to test fly the 3 heli’s I added to my DX8, however, the weather here in the Midwest has been hot…90+ degrees, and windy…35+ MPH. So this was a good time to start working on the Compass 3D+ motor…a Thunder Tiger 53…modified. I removed the muffler from the motor and expected to see piston debris in the exhaust port, but I didn’t. Now I’m really curious as to what happened to this motor.

As soon as I could get the motor out, I opened it up and found nothing! What? No metal shavings...