72T sprocket / #40 chain / #40 7/8" 3/16 14T for the original etek = 0-70mph with great torque.
Best thing to do is to stick to 60volts. period.
frodus wrote:Yes, it's a 48V motor, but it is a range, 48-72V. Take a look at EVAlbum, most of the etek users on motorcycles use 72V. Same thing with Agni, although, they can go to 96V+
on a brushed motor, going 1.5-2x the base voltage is nothing big. Especially at low voltage like 72V.