joshuagore wrote: ↑
Sat Jan 11, 2020 7:45 pm
k1 speed carts have variation, just went there, but 95% felt like ego preserving butt dyno results. Meaning I was definitely in a slow cart on my slow laps, and my friends were certain I was in a fast one during my fast laps.
Also shunt based current limiting controllers are pretty par for the course in any brushless controller setup with modern batteries. The ebike community(and many ev conversion projects from karts to cars), use something called a cycle analyst to act as throttle manipulator based upon shunt reading and what current you want(and dont want). Dialing back the throttle despite you asking for more(closed loop?). Sure there are phase currents and all sorts of other fun stuff, but I could just as easily tie my throttle to m/s of acceleration and recalibrate each cart as they leave the pits, got a low battery, well everyones acceleration is fixed at x m/s or whatever the fastest cart was benchmarked as it left the pits?
yes once you have an electric motor to manage you can do pretty much anything, this is Rob's point, unlike an ICE. Would it be AC? not sure why but F1 and FE are and then there's an inverter and so much control electronics that a bit more for a feedback loop and whatever management won't make much difference to the cost really. So they can make the powertrains much more equal, just have to stop them being hacked