Bearing Spacing HELP!!!

Anyone?

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Klucker1020

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uhm
can't you just try it?
as long as it isn't a perfect fit with the 40mm bearings you should be
good. my guess is that it isn't, there are quite a few things you can
do to mess w/ it as well.

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skrobo

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I believe the OP wants to put 42mm bearings in a frame designed for 40mm
bearings.

Short answer: no. You can't shim up.

You could just go ahead and put the bearings in the frame and clamp 'em
down but I believe you'd trash your bearings in little time.

What you should ask is, how valuable is that frame? Re-machining the
holders to accomodate a larger bearing might cost you more time and
money than a new frame. It might also rob the frame of some of its
strength... dunno unless you told us what kind of frame it is.

Unicycle.com is selling Nimbus / Yuni frames for around $40 right now.
If your friend can cough up the cash, he'd be getting a sweet deal.

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maestro8

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wait could i put some 40mm bearings on my existing hub...its an old kh
moment hub...is that possible...?

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Klucker1020

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I agree with Maestro8 You will probably bust or ruin the bearings pretty
quickly by tightening things down. There are bearing houses or supply
companies that probably have a bearing that will fit both OD and ID
outside diameter and inside diameter and have the proper width. SKF is
a really good brand but may be more expensive than you want spend. If
you live in a realatively large city you might even be able to take the
uni and wheel to the bearing supply and they might be able to figure
out what bearing you needed and even mount it for you.

Line boring the caps will probably cost a bit of money but if there is
a machine shop (good one) around you might take it to them and get a
quote. They might not have any jobs pending and that coudl work in
your favor.

IF you do it your self your going to need a caliper that reads to the
nearest Thousanth .001" (english) or some fraction of mm. I'm 52 and
use english measurments in my shop (yea yea I know blah blah blah).
I've replaced bearings on my unicycles using SKF so it's possible.
Good luck.

Remember if it isn't grown it has to be mined.

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Qweld

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