Jonny Jones Posted July 14, 2005 Report Share Posted July 14, 2005 (edited) Hi people OK, Ive been given this bike to 'clean up' for my neibour and he wants a new BB put in. Slight problem, both cups are cold welded in! They simply wont turn. Its an old old old steel racing kinda bike, open bearings, old skool cups - Driveside has flat sides where you put a large spanner and the non driveside has nothing but a ridge down the center to put some kind of gay tool that i dont have, even in my Park Tool Advanced Toolkit. As I say, cold welded, any advice on getting that bast***s out? Cheers! Jonny. Edited July 14, 2005 by trialmedia Quote Link to comment Share on other sites More sharing options...
ScotchDave Posted July 14, 2005 Report Share Posted July 14, 2005 Best thing I can think of is use some kind of assembly to hold the tool you're using in and then to get a big bit of scaffy pole. That or heat it up, or try and shock it free. Quote Link to comment Share on other sites More sharing options...
hazzyhaslam Posted July 14, 2005 Report Share Posted July 14, 2005 If you know anyone from a car garage get them to use a air gun. Its the only thing that got them out when I worked at Hellfords. Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted July 14, 2005 Author Report Share Posted July 14, 2005 Haha, I know nobody who works at a garage. Just me and my tools :shifty: J. Quote Link to comment Share on other sites More sharing options...
rich4130 Posted July 14, 2005 Report Share Posted July 14, 2005 Lots of WD40, If both frame and BB cups are steel I can't see the point in heating it up. Make 100% sure your turning them in the correct direction, I can never remember, is it left hand side is reversed? Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted July 14, 2005 Author Report Share Posted July 14, 2005 Lefty Loosey Righty Tightey :shifty: J. Quote Link to comment Share on other sites More sharing options...
Mr Motivator Posted July 14, 2005 Report Share Posted July 14, 2005 (edited) Well once chemical metal has set.. There's no way of unsetting it :shifty: Heat it up with a blow torch and g'it some pasty with a long pole and the spanner? Would ruin the paint work though. Why has it been set in though ;) The cups are suposed to be greased before they go in!! Edited July 14, 2005 by Sam@SouthTrials Quote Link to comment Share on other sites More sharing options...
ScotchDave Posted July 14, 2005 Report Share Posted July 14, 2005 Well once chemical metal has set.. There's no way of unsetting it :shifty: Heat it up with a blow torch and g'it some pasty with a screwdriver and a hammer? Would ruin the paint work though. Why has it been set in though ;) ← Steel can fuse to steel chemically it's called a cold weld. Seriously, try to shock it free, hit the end of the axle with a hammer, the vibrations can break the chemical bond. Quote Link to comment Share on other sites More sharing options...
JIX Posted July 14, 2005 Report Share Posted July 14, 2005 Yeah I would but a blow torch to it. It expands the metal and softens it slightly. If its a steel frame then you definatly wont have a problem after. Blow torch all the way round it then try again as soon as you stop. Quote Link to comment Share on other sites More sharing options...
picki Posted July 14, 2005 Report Share Posted July 14, 2005 persuader? aka big hammer...and a screwdriver.... could use a vice and hold the whole lot in place, then turn it using the frame as a lever? Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted July 14, 2005 Author Report Share Posted July 14, 2005 (edited) I think I may just say to my neibour that his bike is buggered. Its an old Raleigh so I can understand if it didnt have any grease on the threads. J. Edited July 14, 2005 by trialmedia Quote Link to comment Share on other sites More sharing options...
Danny Posted July 14, 2005 Report Share Posted July 14, 2005 Get yourself a longer spanner and remember the drive side is opposite thread. Quote Link to comment Share on other sites More sharing options...
trials_pimp Posted July 14, 2005 Report Share Posted July 14, 2005 Haha, I know nobody who works at a garage You know me Jonny........ I would just use brute force and Ignorance. Try and get the frame in a vice, and use a Big hammer and chisel on the Non drive side ridge, and if you have the right spanner, you may have to beat the crap out of it to get it out. If not, just tell your neigbour, it cant be done Quote Link to comment Share on other sites More sharing options...
Jonny Jones Posted July 14, 2005 Author Report Share Posted July 14, 2005 You know me Jonny........ I would just use brute force and Ignorance. Try and get the frame in a vice, and use a Big hammer and chisel on the Non drive side ridge, and if you have the right spanner, you may have to beat the crap out of it to get it out. If not, just tell your neigbour, it cant be done ← True I do know you Lee (Y) Ive tried pretty much everything. The long pole thing wont work cos the spanner is pretty wide so theres nowt that can go on the end of it. I may just say, scrap it, get a new bike. J. Quote Link to comment Share on other sites More sharing options...
Brisa Posted July 14, 2005 Report Share Posted July 14, 2005 Surely the spanner can't be wider than the shell - axle length? Just get some spacers of any kind and the old crank bolt and use them to hold the spanner tight to the bb shell and then muscle it off with a long lever or a hammer for some shock. Quote Link to comment Share on other sites More sharing options...
rhythm_101 Posted July 14, 2005 Report Share Posted July 14, 2005 (edited) i've had loads of experience with this exact problem, there really isn't much you can do or worth doing, the design is really poo, because you cant put mucho pressur on the spanner 'cos it slips off, i would leave it in and say `tiss not woth it :) (Y) Edited July 14, 2005 by rhythm_101 Quote Link to comment Share on other sites More sharing options...
dave33 Posted July 14, 2005 Report Share Posted July 14, 2005 Lefty Loosey Righty Tightey (Y) J. ← ur going the wrong way turn then away from the chain stays, halfords have a tool that fit on them soke it in wd40 first Quote Link to comment Share on other sites More sharing options...
RyanRs Posted July 14, 2005 Report Share Posted July 14, 2005 ← the bit you put the spanner around.... put that into a vice, make sure its TIGGGGHT! get someone to push down on the frame to help it not slip out , then turn the frame! surely it cant slip in the vice, the BB would shatter before you brake the vice. but if it does, atleast you no it was never ment to come out! Trust, it will work! i would do it for you if i lived closer! Quote Link to comment Share on other sites More sharing options...
Bionic Balls Posted July 15, 2005 Report Share Posted July 15, 2005 is that a raleigh lizard :angry: i had one of them.... adam Quote Link to comment Share on other sites More sharing options...
Lawnmowerman Posted July 15, 2005 Report Share Posted July 15, 2005 Bolt a big adjustable onto the drive side using the bb axle and washers then undo anticlockwise. When you have the drive side out shove the axel in and to the same with the adjustable on the non drive side. 16mm should be the right size for the non drive side. Quote Link to comment Share on other sites More sharing options...
TheMunn Posted July 15, 2005 Report Share Posted July 15, 2005 We have that tool at work, we get load's of those kind of bottom bracket come in, shock it them undo. It does help to have the tool though. Quote Link to comment Share on other sites More sharing options...
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