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The Poly Chain GT is available in over 29 different belt lengths spanning 4 different widths - that equates to 116 individual sizes. Bare-in-mind, that's counting only 8mm pitch. Doesn't seem too...

Among the many dozens I've seen, what is a 'standard' profile?
Not sure what you mean. While Gates seems to offer the exterior dimensions in CAD drawings, I'm not convinced the drawings...

Absolutely. The belts arn't exactly expendable either. I bought two @ $50 each... wholesale.

Attached is what I suspect is the original patent for the Gates GT (Poly Chain) profile:

blowlamp,

Sprocket grove profiles are critical and must match the belt designed for it. Grove pitch is only one of the criteria. See examples below.

Your example looks much like this:
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Thanks guys. Been there, and when clicking through the "Partview" feature for both specs & cad files, I stumbled across this:
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I cross posted this in OpenSource Software forum , but applies equally here. I need a CAD program solely for designing 2 sprockets. The problem is finding one which has tooth profiles, specifically,...

Subject says it all. I need a CAD program solely for designing 2 sprockets. The problem is finding one which has tooth profiles, specifically, Gates Poly Chain in 8mm pitch. I'd rather not spend $900...