Re: stuck BB idea

On 2/19/2025 5:25 PM, Mark J cleary wrote:

On 2/19/2025 4:20 PM, Zen Cycle wrote:

On 2/19/2025 5:17 PM, AMuzi wrote:

On 2/19/2025 3:45 PM, Zen Cycle wrote:

On 2/19/2025 3:25 PM, Mark J cleary wrote:

I have this FSA BB that is stuck on the drive side cup. That would be a reverse threaded external BB.

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Sorry if this is a dumb question, but you're sure it's reverse threaded?
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  It has been on the indoor trainer and

actually works but I want to get a new R7000 crankset.
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I have tried the usual BB tool but it will not budge and I chewed the outside of the notches trying. So now my thought is get a hose clamp and put it around the BB cup. Then get it really tight. Then take a large pipe wrench and set it up to grab the clamp threading as a point of pressure and give it the big turn.
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What do you thing of this idea. I don't try getting some penetrating oil in around too much work. I just want to give this one big swipe with the pipe wrench. If the frame goes south doesn't matter.

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Good point.
The Habaneros are all BSC.  The early Italian built LeMond maybe not but Lemonds that I've worked on were BSC.
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Outboard cups are generally well marked. OP ought to double check that.
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And the newer ones usually have an arrow marked on them somewhere.
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No a modern BSA threaded BB and FSA BB bracket with external bearings. It is reverse threaded. I tried my 8 inch pipe wrench but it would not grip real good and slipping. I think I need and bigger pipe wrench. I could cut it out but how is the is the next thought? Pull the crank and put a hacksaw in the BB. I would need to take blade and run it through the BB and attach and then saw?

Eight inch wrench?
If you cannot borrow a regular 30" wrench, slip a tube over the end of it.
For recalcitrant BB cups, we mount the tool securely in the cup then close the tool in a large well mounted vise. Turn the frame and out it goes.
p.s. This might be best done in your trainer to avoid collateral damage. You can push down on the wrench while pushing up at the stem or under the front of the top tube.
--
Andrew Muzi
am@yellowjersey.org
Open every day since 1 April, 1971