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PostPosted: Mon Nov 04, 2013 11:16 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 12449
Location: Surrey
I have a rather lovely (though not sure of brand) and super light ti BB, bit the bearings have seen better days. Luckily they can be removed as are sealed cartridges, though I can't for the life of me see how to get them out of the threaded section of the thing. The axle comes out, leaving the bearings within, and nothing of the bearing is visible to hit with a hammer ( :roll: ), so has anyone got any thoughts, ideas or wizardry that might help me fit new bearings?

Thanks

Oh, and if you happen to know who made ti bearings with a 4 pin cup, I'd be interested to know as I've no clue what mine is, aside from it is nice, and if it fits, it will be going on either my dyna-tech or pace, as these are the only rides I have with square taper (it would be overkill on a Saracen tuff-trax me thinks).


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PostPosted: Mon Nov 04, 2013 11:20 pm 
retrobike rider
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Joined: Thu Apr 17, 2008 1:24 am
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Location: Manchester
Can you put the axle in from the wrong side and knock it out?
Maybe also try heating it a bit to expand the aluminium.


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PostPosted: Mon Nov 04, 2013 11:46 pm 
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I like your thinking, will see. Need to get back to you about the trunion too - been a bit to busy to get to the garage but I can send you the rs one and the fox one if it would help?


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PostPosted: Tue Nov 05, 2013 12:01 am 
retrobike rider
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Joined: Thu Apr 17, 2008 1:24 am
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Location: Manchester
No worries.
Which one is the mount for. I'd need the linkage that it attaches too as well ideally, the one with the plastic spacers in.


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PostPosted: Tue Nov 05, 2013 12:46 am 
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Joined: Wed Sep 21, 2011 9:29 pm
Posts: 1770
Location: yorkshireland
This is what I use.http://wheelsmfg.com/sealed-bearing-extractor.html[url][/url]


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PostPosted: Tue Nov 05, 2013 4:54 pm 
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Joined: Mon Mar 28, 2011 9:29 pm
Posts: 1877
Location: Somerset
They tend not to be a very tight fit, small chisel spanner from the outboard side inwards should free them. It may well crack the outer race so they won't be reused afterwards. I think they're normally 6903 bearings, a cheap pair for under a tenner, ceramic pair for under twenty.


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PostPosted: Tue Nov 05, 2013 9:50 pm 
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Joined: Tue Oct 23, 2012 10:52 am
Posts: 353
Location: Whelmington on Sea
Tis a Rawlbolt that is needed to remove them bearings.


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