Possibly stuck bottom bracket
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CyberKnight
- Posts: 922
- Joined: 18 Dec 2009, 4:44pm
- Location: Derbyshire
Re: Possibly stuck bottom bracket
tried on the floor too , no movement and at all either .
John Wayne: "I won't be wronged, I won't be insulted, and I won't be laid a hand on... I don't do these things to other people, and I require the same from them."
Re: Possibly stuck bottom bracket
if you have a decent tool and a decent bench vice you can put the tool in the bench vice and swing the frame around that. Trying to remove BBs in a workstand is just a waste of time and usually (with a proper commercial workstand) results in a broken frame.
With really seized BBs the last resort is to use a lever far longer than the bike frame and to use this you will probably need to install various levers/extensions into the frame (eg into the head tube and seat tube) and it may turn into a two-main job.
In round numbers
-in workstand: 50-100ftlbs before frame is damaged or (hobby quality) workstand breaks.
- in bench vice; 100-300ftlbs (before tool fails or vice breaks, typically)
- on floor with bracing extensions in frame; 200-600ftlbs before 'something breaks' (could be the frame)
cheers
With really seized BBs the last resort is to use a lever far longer than the bike frame and to use this you will probably need to install various levers/extensions into the frame (eg into the head tube and seat tube) and it may turn into a two-main job.
In round numbers
-in workstand: 50-100ftlbs before frame is damaged or (hobby quality) workstand breaks.
- in bench vice; 100-300ftlbs (before tool fails or vice breaks, typically)
- on floor with bracing extensions in frame; 200-600ftlbs before 'something breaks' (could be the frame)
cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~