Originally Posted by Dustin_mud
So is my math right? A 320v pack with 1400a will give around 600hp at the shaft yes?
Use applied motor voltage times applied motor current, that is your motor input. Then multiply by motor efficiency, 80-90% depending on heat and other factors. Then take off about 10% for drivetrain efficiency. That would be your rear wheel kiloewatts, times 1.341 for rear wheel horsepower RWHP.
Or if you want 300 rear wheel horsepower, calculate backward and see what you have to put into the motor. Then build a pack to put out those kilowatts at the sag level. Knock off 1% for controller efficiency, a few more percent for cabling and connections. Usefull to find a sag curve, amps versus voltage.
Then remember that is peak power, only made during the period before you motor emf starts to fight you. If you can use gearing to keep the motor in that rpm band to make that power all the time. But remember the Warp motors have about a 200amp continuous rating so don't put out 1400 amps for too long.