logie Posted March 7, 2008 Report Share Posted March 7, 2008 (edited) 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, 2008 by logie Quote Link to comment Share on other sites More sharing options...
tony283 Posted March 7, 2008 Report Share Posted March 7, 2008 Logie, Standard set up with a 520 chain is 46 rear 12 front. I use 11 on the front for modern sections. Tony Quote Link to comment Share on other sites More sharing options...
woody Posted March 8, 2008 Report Share Posted March 8, 2008 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. Quote Link to comment Share on other sites More sharing options...
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