At 5:53 PM +0000 1/28/07, Simon PJ wrote:
>I have to admit to being impatient and ham-fisted when it comes to
>cotterpins.
>
>I currently have some cranks that I need to re-install and am having
>problems because the cotterpins that I have do not fit well. I did tell the
>people from whom I ordered the cotterpins the types of cranks that I needed
>them for, but seem to have ended up with ones which are a little too large.
>Or maybe it's my installation technique?
>
>I would be very grateful for advice as to which size of cotterpins I should
>be looking for. Are there types of cotterpin that are better than others?
>
>The cranks that I need them for are a Chater Lea set, and couple of
>different Williams sets.
Cotter _diameter_ is fairly standardised; English stuff generally uses the 3/8" (9.5 mm) size. If your cotters fit the holes in the cranks they're the correct size.
The depth and angle of the _flat_ is _not_ standarsised. It is expected that the mechanic will file the flat to fit the particular installation.
See: http://sheldonbrown.com/
Sheldon "Cotters" Brown
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