Bearing Help

I don't have the $30 to cough up for a pully puller for my bearings, is
there any way to get them off without that tool? Thanks in advance.


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TheoELind
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get a cheap version at an auto shop.


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koebwil

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Go to an auto parts store with a small machine shop (bearing press,
brake turning) and ask them if they'll pull them for free. Then do some
unicycle tricks for them for their trouble. I got a pedal welded on
that way once, long ago.

I don't know how tight the bearings are on or if the wheel is still
laced. Bury the axle in ice. Heat the outer bearing race with a torch
and let the heat transfer to the inner race through the balls. If
you're lucky you can pop it off when there is still enough temperature
differential to keep the axle small and the bearing large. Dry ice
would be even better.

Best suggestion was koebwil's.


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harper

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you can get one for $6


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koebwil

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$6 dollars I can do, thank you both very much. I Tried to get my
chemestry teacher from last year dip the hub in liquid nitrogen, but
she wouldn't let me. The bearings have a large amount of permanant
locktight that I put on there hoping they'd never have to come off.


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TheoELind
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Yeah, 'liquid nitrogen'
(http://staff.washington.edu/gharper/modify2.htm) is fun stuff,
especially for unicycle parts.


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harper

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Another option is to take the wheel to a bike shop and have them remove
it. Some bike shops have a bearing puller. It shouldn't be too much
to have them do it. Another option is to take the wheel to an auto
shop and see if they'd be willing to pull the bearings off.

What we call a bearing puller is actually an auto parts tool for
pulling off various pulleys and gears used in cars. Things like
steering wheel pulleys and all the other various pulleys used in cars.
So an auto repair shop will have one and might be willing to pull your
bearings off. Another option would be to look around at local thrift
shops or flea markets for a used pulley puller. Shouldn't be too
expensive.


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both of those options would probably cost more than $6.


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koebwil

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koebwil wrote:
both of those options would probably cost more than $6.


True.
For the under $6 range a 'battery terminal puller'
(http://store.yahoo.com/battstore/batterpul.html) might work. I saw
one at the local hardware store today and it was under $4. Problem
though is that I don't know if the jaws would open wide enough to fit a
bearing and I don't know if the reach is long enough to be able to
reach the bearing on a unicycle hub. If the battery terminal puller
works it would be just barely big enough to do the task.

Has anyone tried a battery terminal puller to pull off a unicycle
bearing?


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john_childs wrote:
True.
For the under $6 range a 'battery terminal puller'
(http://store.yahoo.com/battstore/batterpul.html) might work. I saw
one at the local hardware store today and it was under $4. Problem
though is that I don't know if the jaws would open wide enough to fit a
bearing and I don't know if the reach is long enough to be able to
reach the bearing on a unicycle hub. If the battery terminal puller
works it would be just barely big enough to do the task.

Has anyone tried a battery terminal puller to pull off a unicycle
bearing?



I've tried it, and it doesn't work, with one like on that link. Doesn't
reach far enough or open wide enough.

Joe


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