Quote:
Originally Posted by ccstud17
stupid question maybe, but how are UD pulleys not universal? I can see cam diameter varying in sizes, but there should be a lot of UDPs that fit the box, that does not make you pay the premium...
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There are more variables than it may seem, besides diameter; bolt size, number of bolts, bolt circle diameter, pulley offset, center hole size, keyway/pin size & location, V-groove width/depth (this may be fairly standard?), etc.