Inspector
Nyuck, Nyuck, Nyuck!
Here is a useful calculator to help with belt and pulley stuff. Pulley Calculator. RPM, Belt Length, Speed, Animated Diagrams - Inch Put in the pulley diameters and the centre distance. It then magically tells you the length of the belt you need. Also useful when you want to change the pulley for different speeds. The site has a lot of other calculators for the shop and construction, like stair layout, concrete volume, rafter/roof, bandsaw blade length and pulley speeds etc.
Pete
Pete