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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We ran 9mm wide, 5mm pitch belts in 2014, GT3 with a 3.5" diameter wheel and a 24 tooth pulley. The center wheel was direct driven, with belts to the front and back wheels. We carefully measured the tension, and worked hard to keep them properly tensioned to avoid ratcheting or over-tensioning. They all broke right after as the season ended.
We are going to go to 15 mm wide belts next year unless the game is something weird again. It's just not worth pushing the limits. If you read the spec sheets, we are well outside the rated range for the belts.