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@Tea_Bee
I did a search and couldn't find what I'm asking - apologies if it's been done before.
Got an old bike mostly stripped and ready to start trying to de-rust the frame. But here's my snag... The crank arms seem to be seized on. And the thread on the inside are rusted, so I can't get a crank-puller in.
How can I get seized-on crank arms off an old cotterless crank BB? Flat-bladed screwdriver and work around it on all 4 sides? Been trying that with no luck. Anything else?
If need be, I'm happy to cut the fuckers off with a mangle-grinder cos I'm not keeping rusty crank arms or the BB. I can't get to the drive side with the angle grinder though - the chain rings are in the way. I'll take my chances with going a bit psycho on it and ending up chewing into the frame if this is my only choice. ;-)
Suppose I run an angle grinder up on the non-drive side and cut through the BB arm, I can then unscrew the ring holding the old BB in place (I checked, that's not rusty). Will that help me though? Can I remove the BB+drive side crank and rings in one piece from the non-drive side? Need pics of the BB to tell?