[MetalJacket]

Originally Posted by BurkeHalderman

From searching through the forums and reading all the posts about belt drives it was my understanding the GT2 profile and 9mm wide belts were the preferred setup for a FRC application, while the AM pulleys are HTD pulleys made for 15mm wide belts I would like to use the GT2 9mm belts as their smaller but the AM solution is tempting. Do you think the different profiles would have a noticeable difference?

Given that these are the pulleys that came in the 2013 KoP, I think you'll fine . A team that we work with used the KoP chassis this year and had no problems that I can think of at this time with their drive. The added width is a disadvantage if you want things more compact though.

EDIT - I may have misread your post. If you were suggesting using the 9mm belts on the AM pulleys, I am not knowledgeable enough when it comes to belts to say whether the difference in profiles would have a significant effect although my gut feeling would be to avoid mixing profiles.