9mm cotter pins?
10-01-08, 07:05 PM
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9mm cotter pins?
So my bike is a vintage 70s Motobecane I believe? not sure on the model, but I am having troubles with finding the right cotter pins. The cotter pin on the non-drivetrain side has become worn because it wasn't fastened correctly with the right nut. I've gone to a few LBS, but they don't have the correct cotter pin for the bike. They said it is a 9mm cotter pin, but the taper is different than the standard one.
So if anyone has any idea of where I can get a replacement cotter pin of this description, please help me out. Any help is appreciated
So if anyone has any idea of where I can get a replacement cotter pin of this description, please help me out. Any help is appreciated
10-01-08, 07:53 PM
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It's cotters, not cotter pins. I got 9mm cotters for my Peugeot from Harris Cyclery. Getting them to fit perfectly required a few strokes with a file. Anybody that tells you that a cotter won't work because the taper is different doesn't understand how cotters work.
You'll also need one of these if you want to do it yourself and do it right:
https://bikesmithdesign.com/CotterPress/index.html
You'll also need one of these if you want to do it yourself and do it right:
https://bikesmithdesign.com/CotterPress/index.html
10-03-08, 03:09 PM
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I may be wrong, but I believe that 9mm was standard English cotters. I believe that French bikes had 8.5 or sometimes 8.0. It is quite common to have to file down the taper to get them to fit correctly.
10-03-08, 06:36 PM
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Yes, it is common to have to file them to get then to fit correctly.
10-06-08, 10:18 AM
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If the OP is interested I have a pile of french sized pins lying around in the basement...
10-06-08, 10:25 AM
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Me too. I have dozens of NOS 9mm pins. Send me a pm if interested.
Dan
Dan
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In life there are no mistakes, only lessons. -Shin
In life there are no mistakes, only lessons. -Shin
10-07-08, 05:45 PM
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Thanks Dirtdrop for correcting my error.
