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Bb Strippage


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OK so basically I wanted to unscrew my bb today and to my surprise the thread in the frame came out with the bb. This kind of explains why the b*****d seller wanted to swap frames with bbs in. Never mind that. :ermm:

This was a try-all bb, and these have very little thread (probably for weight reasons) :sick: Therefore only about 2/5 of the thread in the frame is ripped. So, my idea is to use a 73mm top class E-type bb (so I needn't have to unscrew it in a few months due to snappage etc) and flood it with Loctite 270. Should work shouldn't it?

Edited by Inur
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which cup is knakerd??? left hand or right hand??? if left hand thats only the "guiding cup" the right hand one is the one that holds the axle etc etc in. so if its the left hand one, glue the cup in and as long as you use the same b/b all the time you'll be good to go dude (Y):) if both are stripped your knakerd :(

IF its the right hand side knakerd glue the right hand cup in (in this case you need to use a FSA b/b as you can get the cups off both sides of those B/B's and you can screw the "non drive side" in with the axle etc etc attached.

Hope this helps dude. if it dont sorry :( HOPEFULLY only 1 side will be stripped

Waynio....................

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Pic of bb's and what could be done Left bb is a try-all 68mm, right is a 68mm E-Type

Waynio: Its the right cup which has gone bad. Good idea about the FSA bbs, I'll take that into account if buying a new one. It would be great to remove the internals without touching the right cup. Thank you :)

I'm taking the frame to a mechanic tomorrow, will see what he has to say about this. The other thing which can be done is to make an ever so slightly larger thread in the frame and have a turner make a slightly different cup for the bb.

The last thing I want is to glue or weld something in. If there will be a need of selling the frame in the future, this will surely put people off. ;)

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My names Rob, people. lol

My method has helped ALOT since i stripped my BB shell.... The BB hasnt came loose or even budged since its been put in there (FSA PLATINUM DH)

Should do it (Y)

P.S, iv thought of a way to get the BB out if needed... Just take all cranks off n stuff, then blow tourch the BB sheel from the bottom, then it melts the glue... making it easy to slip the BB out again...

Edited by terror-error
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My names Rob, people. lol

My method has helped ALOT since i stripped my BB shell.... The BB hasnt came loose or even budged since its been put in there (FSA PLATINUM DH)

Should do it (Y)

P.S, iv thought of a way to get the BB out if needed... Just take all cranks off n stuff, then blow tourch the BB sheel from the bottom, then it melts the glue... making it easy to slip the BB out again...

I didnt bother to look at your method cos im lazy lol.. but from you saying about the glue melting.. im guessing you araldited the bugger in?

Just incase you are interested, you can buy a putty that you mould in to your bb area. This cures and allows a new thread to be tapped in. I forget the name but ive seen it used a billion times on stripped threads at my old mans works. ill ask him about it when hes back from walking the dog... at 10pm lol.. dont ask why so late.

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dont blame this on me i wanted to swap with the bb because 1. yours wouldnt of fitted and youd of moned at me for something else and 2. i couldnt be bothered to take it out, everything is my f***ing fault isnt it. nob

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dont blame this on me i wanted to swap with the bb because 1. yours wouldnt of fitted and youd of moned at me for something else and 2. i couldnt be bothered to take it out, everything is my f***ing fault isnt it. nob

Jebus, calm down, I can see why he said/thought that, the deal is done and he ain't asking for money back or anything so just let it go..

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Jebus, calm down, I can see why he said/thought that, the deal is done and he ain't asking for money back or anything so just let it go..

This is a matter between us, so better if this didn't go OT. Wasn't complaining to Gaz about the bb though.

Back on topic :rolleyes:

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Alright, problem solved :)

Took it to a mechanic who screwed some kind of coil in (looked like a spring) and made a new thread where it was f****d. Swapped the cups between the truvativ and tryall bb so that there was more thread in it. BB screwed in very easily and is very tight now. Cups flooded with the strongest loctite so that there is no more self-unscrewing which would knacker the thread completely.

Oh and they did it for ~2 pounds :lol::lol:

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