Explaining how changing roller weights affects a scooter transmission. Contrary to what some think changing roller weight is about changing at what rpm the transmission shifts ratios. The weights should be selected so that the transmission shifts at the rpm where the engine is producing peak power. It’s not about lighter equals faster acceleration and heavier equals more top speed this isn’t how it works. brief guide to variator tuning.

   • Stock vs performance variators   Stock vs Performance variators