CAN SOME ONE TELL MY THE STANDARD AMOUNT OF TEETH ON THE 2 SPROCKETS ON AN OSSA MAR 1973 FOR OFF ROAD USE ONLY (COMP SET UP)

THANKS LOGIE

Edited March 7, 200818 yr by logie

Logie,

Standard set up with a 520 chain is 46 rear 12 front. I use 11 on the front for modern sections.

Tony

Or if you want to lose the big rear sprocket you could use the gearing from the MK2 onwards MAR which was 42 rear and 10 or 11 front. Which front is personal preference. I like 10 as I like the gearing low but you have to make sure you have a gearbox sprocket nut with the flange on one side which fits against the sprocket. This spaces the nut away from the sprocket. With a flat nut and a 10 tooth sprocket you can have the chain ride over the nut as it almost as big in diameter as a 10 tooth. This makes the chain snatch.