0

Most concerned about compatibility of bottom bracket/crank area. Not sure of model and year, any ideas? Some specs...1020 tubes,forks and stays, weinmann 610/vanqueur 999 brakes, SR headset,suntour derailleaurs....obviously some rebuilding done, but does say something about compatibility issues. Thanks!!! Blueskynolimit

ps can someone tell me how to "attach" photos?

1
  • PHOTOS Take a photo and get it to your computer. Hit the edit link straight below your question. Then use the 6th button from the left (icon of two mountain peaks in a box with a sun or moon above) Follow the wizard and it should help. As a low-rep user you can add up to two photos, and each should be under 2 megabytes in size. – Criggie Mar 23 '17 at 7:31
2

Old Motobecanes are all over the place with BB threads. There are large numbers of them each with French, ISO/English, and Swiss. (Swiss may seem odd, but the deal with it is that it's the same 35x1 thread as French but with a left-threaded drive side cup, to prevent loosening. So it's kind of a natural progression from French, although I don't know the exact history with Motobecane using it.) Many but not all BBs have their thread type inscribed on the outside of the cup. I'm sure there's also a heavy correlation with where in the world the bike was originally sold - i.e. if it was for the domestic market it's probably not ISO.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.