Whizzer Coaster
Hi there, well the coaster? I recently went thru Wifey's coaster, as it was making noise.
Removing the wheel is more trouble than to overhaul the coaster.
First the nuts come off, the coaster arm, the dust cover, and then unscrew the cone. Clean and study all parts. I use black Molylibdium grease, or Red High temp disk brake grease to liberally grease all internal parts after inspection.
What to look for? Balls out of cages on the bearings, pitted or flaking surfaces on the races, cracks on the ede of the hub shell, etc.
A little finesse is all that is needed to re-assemble the parts, set your lash, be CERTAIN that ALL nuts are really tight.
I have had much sucess rebuilding (clean and re-lubing, the occasioinal bearing).
The continuing problem that I see with the coaster, is that hard braking, under the speeds of a Whizzer, will sometimes melt the grease out of the hub, and require re-lubing.
I have wondered if drilling, tapping, and installing a zerk in the shell would be worthwhile?
If so equipped, after a hard run (evidence is grease blown on the wheel), the wheel could be cleaned, a couple shots of wheel bearing grease into the hub, and dis-assembly would be much less frequent?
The absolute worst coaster rebuilds are old units where the grease has dried up, Bloody h el l to clean for re-lubing.
Mike