Do any members know what threading is used for attaching a BSA chainring to a BSA crank? I have taken the chainring and crank to the local hardware and gone though their variety of metric and SAE bolts, but none seem to match. I took a chainring bolt out of Williams crank and it doesn't match either. Do any members know whether these bolts (screws) are Whitworth? And do any members have any to trade or sell?
Thanks again.
Cheers.
Tom
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Tom Hayes
18585 Munn Road
Chagrin Falls, Ohio 44023
hayesbikes@nls.net
hayes@jcu.edu