Step change better free roll on mine, but also moved from 20mm rubber to 15mm thane.
This is interesting. @Tony_Stark any thoughts on why this is?
Rubber absorbs more energy than polyurethane for one, but perhaps the main reason is that the teeth of the thane belts have no fabric facing its just solid PU thats smooth and slippery, whereas I’ve noticed rubber belts usually always have a nylon fabric tooth facing which I think deforms more easily causing more surface area to be in contact. The facing also freys from abrasion and that fluffiness would increase the surface area even more.
Any chance of a 340mm option on those belts?