I managed to get the belt tension correct this time. (after all the issues i had/have with my abec 38t tension) rear wheels spin freely and there's no belt slippage.
Loving the extra pull/acceleration and stronger braking
Using them with TorqueBoards 110mm wheels and they're beasts :)
I would give 5 stars but theres still the issue of too much initial bite while braking when going top speed. I have to remote set to 38t (this happens with my 107 abecs too) but im guessing that adjusts the speedometer and not the braking curve . Its like the motor controller isn't taking into account the extra braking power of 38T as it needs to be way less abrupt than that
Just remember if ya buying gears to buy in pairs. And don't forget to buy belts like I did. 2 lots of freight!