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Easy to replace older bottom bracket with a new sealed unit?

Old 04-27-11, 04:27 PM
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cycleheimer
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Easy to replace older bottom bracket with a new sealed unit?

Can you easily replace an older non-sealed bottom bracket assembly with a sealed cartridge? The inside threads on one side of the spindle are stripped out. Bike currenly has a Cambio Rino spindle on a 20-something-year-old Italian road bike. Thanks in advance.
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Old 04-27-11, 04:35 PM
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To answer the question, yes, but there are some considerations. The bottom bracket shell may use one of several different threadings, and the replacement cartridge assembly has to have a spindle of the correct length. What make and model is the frame?
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Old 04-27-11, 05:54 PM
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Take out the Whole BB assembly
Or more likely lacking the whole BB wrench set ,
have a Bike shop do it.
then they can see/measure the relative lengths
and select the appropriate replacement part.
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Old 04-28-11, 02:27 AM
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If the threads on the BB shell are stripped, you have very few options. Velo Orange sells a threadless bottom bracket.
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Old 04-28-11, 03:09 AM
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You say the threads are stripped, but have you asked a bike shop if they can re-tap these? this may resolve your issue.
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Old 04-28-11, 08:12 AM
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Originally Posted by relyt View Post
If the threads on the BB shell are stripped, you have very few options. Velo Orange sells a threadless bottom bracket.
The way I read it is the internal threads on the spindle are toast.
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Old 04-28-11, 08:43 AM
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Easy to replace older bottom bracket with a new sealed unit?
The way I read it is the internal threads on the spindle are toast.
Easiest: The Capt. Piccard approach, Take to bike shop,
say "I want the BB replaced,.. 'Make it So' .. "
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Old 04-28-11, 09:30 AM
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a couple of options:
1.) replace the spindle
-actually quite easy if you can find a replacement italian bb spindle (ie: you have access to a recycled bike shop or gnarly old weirdo who owns a bike shop.) because then you can just keep your cups. Italian bb's have a different bottom bracket shell length than 'regular' ones, just make sure.

2.) replace with sealed bb.
-also pretty easy... italian bike? you're looking at a sealed italian bb (make sure it's italian. they run w/ a 36x24 treading which is different from 'regular ones'. also they are drive side regular threaded....). sealed squared tapered italian bb is still being made and sold. velo-orange sells one, for instance.

3.) threadless bb.
-not sure why you'd want to do this unless the threading on the bb shell is also stripped... In which case relyt is correct that velo-orange also sells a threadless bb. (other companies do it too but I think vo is the cheapest...)
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Old 04-28-11, 04:35 PM
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Originally Posted by dedhed View Post
The way I read it is the internal threads on the spindle are toast.
It is the internal threads on the non-drive side.
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Old 04-28-11, 05:05 PM
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So the fixing bolt that holds the crank arm on is removed? ,

if it wont unscrew and is not going to come off
and the crank as a result wont come off

then the spindle has to be cut off with a disc grinder.
It is hardened steel after all..
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Old 05-01-11, 05:22 AM
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Originally Posted by fietsbob View Post
So the fixing bolt that holds the crank arm on is removed? ,

if it wont unscrew and is not going to come off
and the crank as a result wont come off

then the spindle has to be cut off with a disc grinder.
It is hardened steel after all..
Got the cross threaded bolt off, but the thread inside the spindle is gone.
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Old 05-01-11, 08:55 AM
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I am with those that suggest replacing the spindle with an exact copy before replacing the BB.
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