1982 OS 61 VF abc GS A-2
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It's a MAX 61VF abc GS A-1 according to the OS catalogue I have from year unknown?
Reductions are listed as 1.391 for the rear exhaust 61VF GS A-1, and 1.895 for the side exhaust 61FSR GS A-2. The number of digits after the decimal point doesn't make sense as those coming from countries that still use fractions will quickly notice, as you can't get a reasonable number of teeth on each gear from those numbers.
Brett
Reductions are listed as 1.391 for the rear exhaust 61VF GS A-1, and 1.895 for the side exhaust 61FSR GS A-2. The number of digits after the decimal point doesn't make sense as those coming from countries that still use fractions will quickly notice, as you can't get a reasonable number of teeth on each gear from those numbers.
Brett
32/23 = 1.391
36/19 = 1.895
I got the numbers in the sceptreflight.com reviews, but some basic math would get you to those same numbers in a few minutes :-) Both 19 and 23 are prime numbers, so the fractions can not be reduced.