is a 35x1 fixed cup necessarily French threaded?
04-11-14, 08:31 AM
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is a 35x1 fixed cup necessarily French threaded?
I am trying to remove a shot fixed cup from a bike with a 68mm BB shell. That would suggest either British or French threading (or possibly Swiss, but I am going to leave that aside for the moment).
Figuring that the bulk of 68mm BB shells are British, I have been trying to loosen it a la British, CW. no luck.
But the bike came from France (and I suspect the frame was even built in France) so the specter of French threading raises it's head.
The fixed cup is marked "Campagnolo 35x1"
does that make it necessarily French Thread?
Or, is there another way to determine which threading a 68mm shell actually has (while the fixed cup is still installed.)
Figuring that the bulk of 68mm BB shells are British, I have been trying to loosen it a la British, CW. no luck.
But the bike came from France (and I suspect the frame was even built in France) so the specter of French threading raises it's head.
The fixed cup is marked "Campagnolo 35x1"
does that make it necessarily French Thread?
Or, is there another way to determine which threading a 68mm shell actually has (while the fixed cup is still installed.)
04-11-14, 09:01 AM
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The 35x1 marking positively says it's French (or Swiss). If it's French, it's right-hand threaded on both cups, just like Italian. You can prove it by taking a known British adjustable cup and trying in on the nds side of the bb shell. It will be a loose, sloppy fit.
04-11-14, 09:07 AM
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.. Fixed cup, if Swiss pattern, is a LH 35mm thread .
edit
thanks to JDT , below ... since I've never come across a bike with a swiss thread BB standard, frame ,.
that I had the crank off to look.
edit
thanks to JDT , below ... since I've never come across a bike with a swiss thread BB standard, frame ,.
that I had the crank off to look.
Last edited by fietsbob; 04-11-14 at 09:38 AM.
04-11-14, 09:28 AM
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