Hints on Removing BB cups?
06-01-09, 04:36 PM
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Hints on Removing BB cups?
I have an FSA crank/bottom bracket that went in for a warrantee checkout for some squeaking (turned out to be the chain). Anyhow, when trying to remove the BB cups (16 point cup), I saw the tech use a 3' breaker bar and still could not budge it!! Wow!
Any ideas of how to get this thing off without cracking the darn frame? They must have been overtorqued when installed. The bike is ~700 miles, 10 weeks old, Scattante carbon frame. I'm thinking of upgrading the BB to Ultegra soon and would like the know that the BB can come off.
I was thinking of stabilizing the bike on the tires, on the floor. Setting the wrench parallel to the floor and then - WHACK! One good impact with a 5# dead blow. Thoughts?
Any ideas of how to get this thing off without cracking the darn frame? They must have been overtorqued when installed. The bike is ~700 miles, 10 weeks old, Scattante carbon frame. I'm thinking of upgrading the BB to Ultegra soon and would like the know that the BB can come off.
I was thinking of stabilizing the bike on the tires, on the floor. Setting the wrench parallel to the floor and then - WHACK! One good impact with a 5# dead blow. Thoughts?
06-01-09, 04:39 PM
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If it's that stuck, you should just pay a LBS to do the swap. Let it be their problem/liability.
06-01-09, 04:41 PM
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Sounds like a good way to crack a frame. Apply some penetrating lube, let it set for a few hours and be sure to turn the wrench CW on the right side. If you bought it from performance, I'd take it to them to fix, if possible.
A squeaking chain? Try some lube.
A squeaking chain? Try some lube.
06-01-09, 04:43 PM
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After reading your post OP, I think the best hint I can give you to remove your bottom bracket cup is to take it to your local bike shop (not Performance Bike though). Any other hint may lead you to having to stimulate the economy with a new bike purchase.
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06-01-09, 04:44 PM
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i know we all assume that the mechanic know what they are doing....but maybe...just maybe...they were turning it the wrong way.
06-01-09, 04:55 PM
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Sure, but if you don't trust anyone, then what are you going to do on that day when you need to go have surgery? Doctors make mistakes also. We're all people. Well, some of us anyways.
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06-01-09, 04:56 PM
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A lot of times, those cups are put in with an air ratchet at the factory, hence requiring a breaker bar to budge loose. No competent mechanic will re-install a bb cup with an air ratchet so you do not need to worry about having to get out the breaker bar.
06-01-09, 05:02 PM
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maybe some goof used loctite in it? 
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
06-01-09, 07:53 PM
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As for the mechanic; I've watched him for several months and he knows his stuff. Really meticulous fellow. I trust him. I'm a hot rodder and mechanical engineer, I can tell if folks around hardware know what they're doing.
P.S. My OP was a bit in jest to solicit replies. Carbon does not react well to impacts but I wanted to prod some ideas.
06-01-09, 07:55 PM
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06-01-09, 07:57 PM
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That's the best idea yet - and yes, a hammer impact definitely risks cracking a frame. As I mentioned, my OP was a bit in jest to solicit ideas.
