Hi All,
The belt kit linked to is the same as the one I recently got secondhand,
There is no shock absorber in it.
Belts are rigid
there is no stretch or elasticity in a toothed belt, on a BSA they need to run with a
fairly slack belt tension, easy twist through 90 degrees
What surprised me about the kit I got which had not done huge mileage maybe 5000 or so
is the wear on the engine pulley
It is quite noticable
The kit I have was fitted to a Goldie, big bore and a 5 speed box
The primary ratio with the belt kit is 2:1 , 34 and 68 teeth pulleys
this would mean that the power pulse from the engine was always pulling on the same pulley teeth ?
every 10 revolutions you are pulling on the same belt teeth
If the pulley(s) had an odd number of teeth it should spread out the wear better ?
The 2:1 ratio is lower than the 23/43 ratio I am running my SR on so I need to think that out some more
At one time SRM were offering a pulley that incorporated the BSA shock absorber
They modified your old sprocket setup,
John