Quote:
Originally Posted by Deke
This.
If you aren't direct driving a 6wd center wheel with a transmission, I would not recommended using 9mm wide belts. That is the only drive configuration that would make them manageable. If there are small pulleys driving large high traction wheels, the 9mm wide belts will still give you problems in the 6wd direct drive center wheel.
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This is also a function of pulley diameter. I am not familiar with 987's setup, but from what I remember they use pulleys at least 30 tooth, not tiny like 24 tooth or smaller.
I (and many other teams) have had some problems with 24T pulleys, 9mm belts, direct driving 6wd from the center etc etc. It's right on the margin of can or can't work, and it depends on how careful the user is. I don't like my drives to ride the safety margin that closely.