I could be wrong, but I think the stiffness thing was from back before Gates developed the centre track system... So if there was too much flex the belt could work its way off the cog and ring sideways. Centre track has made that pretty much impossible now.
It's also allowed the belts to be run with a bit less tension.
I could be wrong, but I think the stiffness thing was from back before Gates developed the centre track system... So if there was too much flex the belt could work its way off the cog and ring sideways. Centre track has made that pretty much impossible now.
It's also allowed the belts to be run with a bit less tension.