Paul the belts on the 748RS are narrower than those on the normal 748/916 etc, probably saving weight by running narrower pulleys. The frequency is given in the manual but I can't recall what it is off the top of my head. Felix probably has a frequency for the belt tension on his 996RS, but I'm not sure on the width of the belts on his bike. I'm sure he can add the imformation in the near future, Kev |