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Path: ...!2.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: AMuzi <am@yellowjersey.org> Newsgroups: rec.bicycles.tech Subject: Re: Stuck BB Date: Mon, 16 Sep 2024 15:16:32 -0500 Organization: Yellow Jersey, Ltd. Lines: 60 Message-ID: <vca3mv$31h84$2@dont-email.me> References: <vc9riq$2vnl9$1@dont-email.me> <vc9v87$2vi8l$4@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Mon, 16 Sep 2024 22:16:32 +0200 (CEST) Injection-Info: dont-email.me; posting-host="8c9ab8ccb59e5a8447dd559b684e63e2"; logging-data="3196164"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18NqCivsqIhhUqX0OH5RzsN" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:zMDpFskcx4b9yj47qRKOjvvM+g8= Content-Language: en-US In-Reply-To: <vc9v87$2vi8l$4@dont-email.me> Bytes: 3401 On 9/16/2024 2:00 PM, Zen Cycle wrote: > On 9/16/2024 1:57 PM, Mark J cleary wrote: >> My Wilier has a stuck right cup BB. At the moment the >> cranks spin fine. It has an FSA Mega Exp crankset that is >> the one that is not pinch bolts but uses self extracting >> allen key to put on drive side crank arm. Has the wavy >> washer in the set up. I think that is why the bearings >> went bad because it allows moisture to get in not sealed >> like a regular shimano crank and external BB. >> >> The BB is of course and external BB from FSA. The let side >> cup bearings went bad so I used a Shimano BB60 cup >> because I had a spare one. The crankset works beautiful >> now. However I would like to simply try and use the whole >> Shimano BB60 bracket. I cannot however get the right side >> cup off. I realize it is left hand threaded but it is >> really stuck. I tried putting in a vice and using the bike >> to turn but no luck. > > I was going to suggest that. > > >> I have managed to chew the notches pretty good but it will >> take the wrench at this point. >> >> Any suggestions on how to get the cup free. I actually >> think it would be easier to simply hacksaw the cup and >> take it out but I don't want to mess up the treads in BB >> of the bike. I will take any and all suggestions on how to >> get this cup off. At the moment the cranks spin fine >> because the bearings are fine on the right side cup but I >> just don't like the set up. I may even go to a shimano >> R7000 crankset. ] > > > I'm sure Andrew may have some sage advice, but if you're > beginning to see damage to the cup, I'd suggest taking it to > a shop. > > If you still want to DIY, get one of these to match your > threading first. > > https://www.amazon.com/HOZAN-C-402-Bottom-Bracket-Tap/dp/ > B000BSBSLQ/ > Some people do like owning esoteric tools but I strongly dissuade most customers from buying dies, reamers, mills, taps. They are only and always subtractive, that is, they can (and often do) damage material but they cannot add material. In his aluminum shell, a small stainless brush is plenty for cleaning up crud from the threads. https://www.sears.com/forney-70488-wire-brush-stainless-steel-with-plastic/p-00920078000P -- Andrew Muzi am@yellowjersey.org Open every day since 1 April, 1971