Quote:
Originally Posted by Chris is me
9mm wide, 5mm pitch is more suited for the higher torque, lower speed belt spans of drivetrains. For an initial reduction, smaller belts of smaller pitches can perform just as well.
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7000 RPM @ 4 max HP is still well within 5mm pitch GT2 belt limits, so they really could be used on any stage, but as you said they are better suited for end stages, mostly due to their size.
Quote:
Originally Posted by Chris is me
Whether HTD or GT2 is better is subject to some debate, and it also depends on the application. GT2 is rated for higher loads, but some say HTD's deeper tooth allows it to handle reversing loads better. HTD is probably a bit closer to optimal at the end of a driveline compared to the beginning.
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I'm sure many on 971 could have a long discussion with you about the strengths and drawbacks of the HTD vs GT Series belts. IIRC they ran GT3 belts in their drivetrain due to the shock the belts experienced with their high CoG. (Take that with a grain of salt as I did not look at their robot too much this year)
I personally go with GT2 in every application as I have yet to find a place where they don't 'just work.'
(here a link on
htd vs gt2)