Sutherland's 3rd edition gives the track chainline as 40mm for 110m rear spacing and 42.5mm for 120mm. That's off by approx. 1/8"
At 10:54 PM 8/5/06 +0100, greenjersey@ntlworld.com wrote:
>Just read this and in the unlikely event that it is news to anyone else I
thought I would share it.
>Apparently on a typical early post war English sports bike with fixed gear
the measurement from the hub and bracket centre-line to the chainwheel, and
of course the cog, should be exactly 1 1/2 inches. That seems remarkably
short. Were bottom bracket shells narrower in those days?
>Ray Green, Brighton, England
John Betmanis <johnb@oxford.net>
Woodstock, ON Canada