Originally Posted by 32krazy!
and you would be wrong!!
as the 65mm would be equal to a 178 mm crank pulley a 63 would be close to a 181 crank pulley without the overdriving issues, build me a 63mm s/c pulley and ill show you how well it works!!
Please elaborate. According to EC's numbers on their website, the new SC pulley is approximately equal to the 181. According to them, the same torque claims for both. Doing the math on the new 64.7mm SC pulley, I came up with 18.7 p.s.i.g.