The freewheel needed a little grease. I removed the freewheel and cleaned it up. I reinstalled it and reassembled the bike. After a couple of rides the sounds went away and the bikes running smooth again. I ordered a new 16T freewheel on line.

My Radrunner has started making noise when I coast. I pulled therear tire off and the sprocket won't freewheel in one direction. When I force it to turn it makes a growlly bad bearings kind if sound. Shouldn't the sprocket on the motor freewheel in one direction ?

Hi, I've had my Rad Runner about 3 years with flawless performance in every kind of environment. Just recently it started making strange noises/clicking sounds. I can feel the derailer moving. It is happening when I'm coasting. It seems ok as long as I'm peddling but as soon as I stop it starts doing it again. Is something broken in the clutch mechanism. I don't know. Any help appreciated.