Re: stuck BB idea

On 2/19/2025 6:39 PM, AMuzi wrote:

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.

Absolutely!
In my heavy portable tool box, I have two pieces of square steel tubing: one is 1.25" square, the other 1" square, nested inside the first so they don't take too much space. When I need lots of torque, I slide one over a wrench handle, then the other for a longer lever. If necessary, I can slide something else into the end of the last tube.
I don't know if this would apply to Mark's setup, but Sheldon Brown's site has an interesting way of removing old style bottom bracket cups that are stuck. See https://www.sheldonbrown.com/tooltips/bbcups.html
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- Frank Krygowski