New shimmy

[Chamberpains]

I've had this on and off throughout the recent years. Every single time it's the brake drums aren't centered properly. Everytime I pull them back off and use the proper centering studs to line up the drum and wheel on the stud/hub and it goes away.

The newer brake drums for moto/hub piloted wheels have been enlarged to a ridiculous size. This allows them to go on with almost a 1/2" of movement left or right. I wouldn't think this would cause a problem but simply using proper centering studs fixes it everytime.