SF1 rear wheel

[harpmeister]

I hope someone out there understands what I'm on about.

As part of a restoration on my SF1, I sent some parts away to be bright zinc plated one of them being the bush that goes through the sprocket plate, I now find that it is a very tight fit going through the two bearings which are new and fitted correctly.

Would a thick coating of bzp cause this ?

I suppose what I would like to know before I put it in the lathe and skim it is should it be a tight fit or should it be a nice sliding fit in the bearings

Thanks in advance for any advice.

 

[phil37]

  Hi Joe - depends what you mean by " very tight" - if you can push it in by hand or with some light taps with something reasonably heavy - then it's fine. bearings should show no signs of extra friction when spun - If you need to "skim" it - best to emery it down in the lathe a tiny bit at a time. - regards - Phil

 

[laverdas]

yes it would i had the same problem on a GTL750 aftre coating so i just got a brass wire brush in a drill and clean the shaft of the rear wheel spindle. this fixed the problem. providing your brush can remove the plating
regards andy

 

[piranha-bro2]

Once bolted up, the cush drive bush will be firmly held in place, so a firm sliding fit is as tight as you'd want to ensure the bearings are not binding at all.