Trying to get the fixed Italian threaded cup out of a frame, whoever owned this bike before me went to town on it and now no tools will fit without slipping off with any pressure.
What would you recommend trying first?
by Moos3racer
Trying to get the fixed Italian threaded cup out of a frame, whoever owned this bike before me went to town on it and now no tools will fit without slipping off with any pressure.
What would you recommend trying first?
by Moos3racer
12 Comments
Nut, bolt, washers to clamp the cup, and then wrench on the outside, ratchet to the inside, and turn with both at the same time
Make sure you’re turning the right way, it’s Italian so that means that it will be counter clockwise to loosen.
[https://www.sheldonbrown.com/tooltips/bbcups.html](https://www.sheldonbrown.com/tooltips/bbcups.html) scroll down to “Fixed-Cup Tools”
or
get one of these: [https://www.efficientvelo.com/tools/universal-bb-cup-remover](https://www.efficientvelo.com/tools/universal-bb-cup-remover)
Velo tools has a tool for that.
Some very gentle heat from a heat gun, nothing hotter than that, will do wonders to unstick a bottom bracket. Gentle heat.
Cut slots with cutter/grinder, insert object and wrench off.
Your gonna need to file down the faces for a wrench to lock on to and others have said do make sure your turning it the right way.
Other wise you’re gonna need a breaker bar and some heat to get that to budge. It’s gonna be a case of clamping it on and slowly increasing torque whilst hitting it with a bit of heat. It’ll be a long ass process and you’ll need to re tap the threads but it’ll shift if your patient with it.
I know you have probably already taken this into account but if it’s an Italian threaded BB it doesn’t have a reverse thread, BSA BB’s have a reverse threaded cup but Italian don’t. I have seen countles Italian BB in that sort of condition where people have been giving it full beans but trying to turn it the wrong way.
I usually start them off in the bench vise if the are stuck but I’ve also had pin wrench style ones that I’ve had to cut a slot with a hacksaw and collapse them inward with the big pliers.
Weld a length of flat bar to it.
At this point get one of those metal Lazer cutting machines to just un-alive the BB
I use largest bolt I can fit into this hole with nut on outside. Tighten them with wrench outside using long tube as handle extension. Keep on tightening until cup gives up . Cup threads on this side are left threads-opposite of bolt I’m using to extract. It helps to warm cup up with something like soldering flame torch for plumbing but warm cup only and carefully because too much will damage paint on frame.
It usually works in a jiffy. Do not use adjustable wrench for this -you will wreck it along with nut you are tightening.
Ive had to weld a nut to them before.