so i wasnt so happy with the acceleration even with the 12tooth. . i learned and noticed a feew things tonight. my thought process was , if i drop to a smaller gear i might draw fewer amps. and run the motor and controller cooler. hopefully giving me more range and a more efficient vehicle. i threw the 10t sprocket back on and took her for a drive. first thing i learned. my gear box reverse is geared higher than forward. our previous thought was they were the same. this is untrue. so i tested the reverse gear and forward gear. in reverse gear( driving forward) she still managed to get up to 46-48 mph. so not much change from the 12tooth, but she had more take off power and was honestly more pleasant to drive. though a bit louder. she seemed like she could keep up with traffic better, and regen does help. in forward gear she accelerated much quicker and got up to about 38 mph. that is a significant difference. i think i would be happy with my 10 tooth gear if it was sustainable. its like i have two modes now, quick mode and general purpose. now the problems
in 10tooth reverse gear forward moving we suck up amps. i mean we are doing roughly 280 wh per mile. which is a large increase from 220 it drops range significantly. my unreliable shunt/ bms also was reading 400 amps at times. which i trust it drew more amps. but i dont think that many more since the controller maxs at around 250a . still its a significant increase in amps. also to add to this the controller and motor get much warmer quicker. further confirming there are more amps being pulled. why is this? i assumed by allowing the motor an easier time to spin up she would draw fewer amps. to add to this the ambient temperature varied from the 60's to low 70's as i did this at night. my motor got hot enough that touching was uncomfortable. and controller easily jumped up to 110f. if i drove this in the day at 95f outside the controller would temperature throttle very quickly. and that motor would just cook. so im left wondering, do i need to reduce amps available from the motor? would this negate all my work with gearing?
it seems as if the higher the 12 tooth gear and 14 tooth sprocket with poor acceleration draw MUCH less amperage. but do manage to get up to speed eventually, and stay MUCH cooler. a quicker , easier to move car seems to draw a lot more amperage and heats up alot quicker. my range takes too much of a hit . i managed to drive 20 miles today on a charge. at about 15-16 miles the battery was low enough that usable speeds weren't really feasible. under 35 mph was what it would reach. i did manage to drive 20 miles though. with probably another 3 or 4 in the tank at sub usable speeds meaning under 35 mph.
id love some input friends!
what am i missing here?