@Vernon Barry posted:Yes, timing belt pitch, belt width are both important. What is the full string printed on the belt?
I think MXL so SDP-SI is one place to search for small belts and gears http://shop.sdp-si.com/catalog/?cid=p470
Further searching MXL 0.8 pitch, 18 tooth is about 11mm OD (0.438in), however bore size is 0.188in = 4.7752mm
http://shop.sdp-si.com/catalog...=a0%3A2%3A.080%22%20(MXL)%3Ba1%3A2%3A18.0&sort=undefined&view=table
You might either bore the one you have or more searching.
That is the full string on the belt 37.6MXL. Thanks for the link to sdo-si.com. I think this is the correct pulley. http://shop.sdp-si.com/catalog...?id=A_6N16M018DF3004 based on metric instead of inches. Everything matches what I measured.
I can definitely drill the flywheel. The current pulley has a shaft adapter in it...but I do like the set screw idea. If I bought the above pulley, I think that would work and it would be cheaper than sending my stuff off to be done by someone else.