Hi Simon like Bazyle I too have an Adept shaper, however it is using pulleys with Perfecto cast into one of them. The diameters are 7 inches and 2 1/4 inches, I too thought it was going too fast as well and converted to angle drive. See below,,,,,,,,,,,,,pretty sure it is 10:1 reduction. Gordon![wp_20140514_004.jpg wp_20140514_004.jpg](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)