Yes I have tried the web site and also requested
infofrom the company no luck as of yet and the
final design is a rush as always. Thought I might
be able to get the information here faster as I
have 52 pulleys in one design and 34 in another.
Maybe check Gates for their 3MM HTD design. The Fenner is a copy of this, and everyone else's HTD design. Or Stock Drive Products, Winfred Berg, Carlisle