Hi Guys been a long long time since i've been on here, a bit of an update i've now Graduated as a Motorsport Engineer and i have been looking at taking one of my race cars i have kicking about the workshop and develop it into an EV racer. and finally i have secured funding to do so.
Here in the UK we have a motorsport series called Hillclimbing, on average 1-2 miles of tight twisty's commonly uphill all on tarmac. most of the time the climbs are circa 40 seconds some upto 2 mins so range is not an issue...ideal you say for EV's. the car is a Jedi Single seater with minimal aero on it, in comparison to a formula ford 0.8m^2 (CdA) and a Jordan 191 F1 car 1.1m^2 (CdA) one with alot more aero and one alot less, and the formula ford being similar size I can assume a CdA of circa 0.9-1.0 (as i cannot do any coast down tests atm).
Some Specifications on the vehicle:
Vehicle Weight with Yamaha YZF1000 engine + Driver - 270kg
Vehicle Weight Enginless - 120kg
Now the replacement needs to be just as quick if not quicker, so the current engine produces 130Kw with fairly linear delivery: http://www.dynobike.com/images/graphs/r1_cbr1000_2.jpg
And on average 50lbsft of torque.
Now the main question:
Motors.......I am limited to an 11" diameter MAX as thats all that will fit in the chassis and battery space is limited but the side pods can be used.
What sort of motor would be required to achieve this performance, I can do all the calcs its just its not very accurate using Peak and Rated power and torque figures. if at all possible i would like to use a local company that produce these PM motors:
and if i used the 2x2 (2motors) in a small package of 25cm cubed producing 72kW , 84Nm Power at 72V which is pokey enough but will it be enough.