Is the pic showing a home made tool?
Fixed cup removal (with pics)
- Thread starter rmwesley
- Start date
Dface
Retro Guru
No it’s purpose made. Never failed either.
Any ideas what you can do with an adjustable cup that is seized, of the type where you can’t remove the spindle? I.e no option of putting a large bolt through the holes? Have tried a punch in the pin holes and a hammer but nothing budging. Not bothered about re-using the bb or ruining the paintwork on the frame (am going to repaint it anyway once I get the bb out) but want to keep the threads in the frame intact. Is a blow torch worth a try?
bikeworkshop
Senior Retro Guru
Have you removed the drive side cup?
Usually the cups are pressed over the axle bearing, and a sharp tap will knock the bearing and axle assembly free, if the opposing Cup has been removed first obvs.
Heating the frame will often loosen seized parts as the expansion at different rates forces the bond to break.
200⁰will burn the paint though, and sometimes it needs to be hotter than that.
Welding a bar across the bb cup face usually does it. The massive surge of energy/ heat helps break it free, and the bar acts as your release lever leaving the paint undamaged
Usually the cups are pressed over the axle bearing, and a sharp tap will knock the bearing and axle assembly free, if the opposing Cup has been removed first obvs.
Heating the frame will often loosen seized parts as the expansion at different rates forces the bond to break.
200⁰will burn the paint though, and sometimes it needs to be hotter than that.
Welding a bar across the bb cup face usually does it. The massive surge of energy/ heat helps break it free, and the bar acts as your release lever leaving the paint undamaged
No cups have been removed. I was just starting with the ‘easier’ one! I don’t have the means to weld a bar on to it sadly. I’m not worried about the paint, so might give the blow torch a go anyway. Thanks for the reply.Have you removed the drive side cup?
Usually the cups are pressed over the axle bearing, and a sharp tap will knock the bearing and axle assembly free, if the opposing Cup has been removed first obvs.
Heating the frame will often loosen seized parts as the expansion at different rates forces the bond to break.
200⁰will burn the paint though, and sometimes it needs to be hotter than that.
Welding a bar across the bb cup face usually does it. The massive surge of energy/ heat helps break it free, and the bar acts as your release lever leaving the paint undamaged
bikeworkshop
Senior Retro Guru
Bolt the tool onto the axle end first, then grip it in a bench vice.
And don't forget to turn it the right way
And don't forget to turn it the right way
