MrDude_1
100 kW
ElectricGod said:I got a new back wheel and installed a 54 tooth sprocket on it and was already running a 15 tooth sprocket on the motor with my old 64 tooth wheel sprocket. I knew I was pulling really strong with the 64 tooth/15 tooth sprockets or 4.27:1 so my hope was that I would convert some of that torque into speed. It didn't work so well going to the 54 tooth wheel sprocket. The motor just couldn't deliver and was drawing tons of current at 3.6:1. My 3 phase wires got hot and I had to shut it down. I knew it was probably way too aggressive of a move in gearing...well it was. LOL! I'm now running 54 to 11 or 5:1. I'll run there for a while which should give me great torque and then I'll bump down the ratio to a 13 tooth sprocket or 4.15:1 to get a little more speed if it's merited.
I know from experience that it is really easy to step over the gearing limit.. you can keep inching up on more speed, more speed, and then its like it fell off a cliff.. it suddenly doesnt work well anymore.