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Go Back   MotoredBikes.com: Motorized Bicycle Forum > Garage & Tech/Mech Help-detailed & specific tech talk > Friction Drive


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  #11  
Old 11-03-2009, 04:48 PM
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Happy Valley Happy Valley is offline
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mifletz
The spindle and bearings are assembled with a press fit so a shop press is pretty much necessary but makes their disassembly fairly straight forward. You don't need a particularly high capacity press however one with a large enough opening, around 10", is needed for the set-up blocks.
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Old 11-03-2009, 06:04 PM
5-7HEAVEN 5-7HEAVEN is offline
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Question: How does a machinist remove a 1.5" friction roller from the drive housing when its bearing holes are 1.375"?
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Old 11-04-2009, 09:43 AM
moondog moondog is offline
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Quote:
Originally Posted by 5-7HEAVEN View Post
Question: How does a machinist remove a 1.5" friction roller from the drive housing when its bearing holes are 1.375"?
Heat the channel. Push the bearing and roller out the side as far as they will go then use a puller to remove the bearing that is on the outside of the channel ( the other bearing is still on the roller on the inside of the channel ). Then remove the roller ( still has one bearing on it ) ?

I think I understand why they made it press fit. The bearing holders are aluminum.

We bought a friction drive kit from BGF and it had a steel channel like BMP's kit but BGF's kit had a steel machined bearing holder welded to each side and the bearings were a slip fit.

Best designed friction drive setup I have seen but not the best built.

When I build one it will be a copy of the BGF kit.

Last edited by moondog; 11-04-2009 at 10:51 AM. Reason: be clearer
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