Technical & Reference Section > Tech and Restoration

Fitting my first 3pc in a US BB *UPDATED*

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ED209:

--- Quote from: kuwahero on January 23, 2011, 07:38 PM ---Ed if you have any of the spacers I gave you left, you can use one of them on the inside to get the bearing spacing spot on.

They've come up well under the White :4_17_5:

--- End quote ---

I don't but thats a good idea Marc - I just need to track down some washers.

They came up ok didn't they  8) it was very thick powder with a black base coat of something that was a bitch to get off... nitromors hardly touched it... wire wool did.

pickle:
Nice job ed  :daumenhoch:

brettypeeps:
Looking good Ed. :daumenhoch:

ED209:
cheers lads, and thanks again to Marc for a pukka crank set and BB for a sweet price  :)

TwoBobRob:
So,  have a trawl around t'interwebnet and you'll find the specs for the two internal tube spacers. One is to fit in a shell made with a metric dimension, and t'other to fit in an imperial dimension of course.  Next time you'll be able to simply measure the width of the shell and bobs yer uncle.

Secondly, the correct tube spacer in the majority of cases will actually prevent both cups from going fully home into the shell. This is deliberate so that when your cranks arms are bolted on tight it guarantees no lateral pressure on the bearings, which is what locks them up.  The crack is to have the drive side cup/bearing all the way home, and the non-drive side slightly protruding. You can then tighten everything right up in confidence.

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