Interesting technique. I built some "tooling" for fixed cup removal that has never failed! Use a piece of threaded rod and 2 pieces of aluminum channel (drilled thru) to clamp the spanner onto the fixed cup such that it WILL NOT MOVE. Then hammer away (being sure to go the right direction, based on BSC, Italian, or Swiss) and back that baby out of there.
markp
-----Original Message----- From: classicrendezvous-admin@bikelist.org [mailto:classicrendezvous-admin@bikelist.org]On Behalf Of TW406@aol.com Sent: Tuesday, October 09, 2001 10:42 AM To: classicrendezvous@bikelist.org Subject: Re: [CR]Where to clamp that (classic) bike in the work stand!
Well, I can only think of one time I couldn't get a fixed cup out. (Normally I don't remove them unless I'm having a frame painted) That one I left in, and my painter, who is also a frame builder removed it for me.
But when I do have a tight one I put my body through the frame to hold it while I crank as hard as I can, or hold it with my other hand, so I doubt its torquing the top tube on the stand.
I have clamped the flats of a fixed cup in a vise and used the frame as a lever to remove as a last resort.
Ted, everything I know I learned by first screwing something else up
In a message dated 10/9/01 10:28:32 AM, mpetry@bainbridgeisland.net writes: << OK, but what if you have to do some really serious torquing on a stuck fixed cup, are'nt you overstressing the seat lug ? Even if I hold the stay or something to counteract the torque of the fixed cup wrench, my preference is to clamp the seat tube down low, carefully, not too tite, bearing in mind that the compound leverage of the clamp CAN crush the tube.
Yes, for normal tuneups and stuff I always clamp the seat tube.
>>