Thread: Cottered spindle diameters?
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Old 05-03-11 | 08:40 AM
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Amesja
Cottered Crank
 
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From: Chicago

Bikes: 1954 Raleigh Sports 1974 Raleigh Competition 1969 Raleigh Twenty 1964 Raleigh LTD-3

Originally Posted by Glennfordx4

ISO= 16mm Nominal or 15.9 Actual
English= 5/8" (15.88mm) Nominal or 15.75-15.80mm Actual
French= 16mm Nominal or 15.9 Actual
Italian= 16mm Nominal or 15.9mm Actual

Glenn
.1mm = 0.003937 inch

My Taiwan crank above must have been ISO while the Nottingham-made one was obviously very British. That explains the 4-5 thousandths difference I measured between the two.

Thanks Glenn. That explains a lot.
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