Bicycle Mechanics - Anybody using a BB plastic sleeve with a UT BB cups
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12-25-10, 08:10 PM
Just wonder if anybody is using a BB plastic sleeve in a set of UT cups as a extra protection for the bearings and cups?
12-25-10, 11:00 PM
what's a UT?, not an Understood Terminology U of Texas? or Tennessee
12-25-10, 11:18 PM
I was torn between Ultegra and Unthreaded.
12-25-10, 11:25 PM
I assume it's Campag Ultra Torque...
12-25-10, 11:33 PM
A-ha. I'll defer to operator. He's got some good knowledge and experience with modern stuff.
12-25-10, 11:33 PM
they The Ultra Torque is sealed bearings, not loose balls..
I don't see the need ,
Unless you have a very cut out BB shell ..
the contamination comes from the outside world..
+ I dont think the external BB cups threaded mounts
are screwing in as far as a cup and cone BB parts did ..
12-26-10, 09:29 AM
As long as the plastic sleeve has a large enough diameter so that it doesn't contact the moving surfaces, I don't see as that it would hurt anything. It seems that it would be a good idea to help prevent contamination of the hirth joint.
12-26-10, 05:02 PM
The UT cups* come with seals in lieu of the old-school plastic tube. This is both more effective (plastic tubes are hard to seal properly at the ends) and convenient. If you need extras, the part number is OC-RE002.
*except the SR cups, because the SR cranks' ceramic bearings are apparently bulletproof.
12-27-10, 09:17 PM
Thanks, My old steel has a nice cut out and i'm planing to put a set of UT (ultra torque) cranks to that bike. Thanks again for the comments :)
12-27-10, 09:50 PM
Cut a liner out of a beer can, and put it inside the BB shell that should do,
just as well .
A Condensation drain is a good thing for the unpainted insides of steel tubes.
12-27-10, 11:04 PM
12-29-10, 06:17 PM
Ok found a sleeve between my stuff, a shimano one and the girth thing does not fit in the middle of the sleeve. So i had to improvise and i cut a piece of plastic from a plastic bottle, and joined it together with some tape. Done.
So far so good but i wont know for certain until i put the crankset in the frame, maybe tonite.
Wonder if the sleeve of a shimano external cups BB will work, it might the issue is to find one.
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