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I am building an electric go kart for a final project, and i'm just trying to get my initial justifications correct, with respect to the classical physics involved.

SPECS: i was the car to be able to reach 60km/h,

The total weight of the car will be approx 200kgs.

the size of the tires of the car are 13cm in diamator.

(i know from research that conventional gokarts have approximately 70NM Torque and 550RMp at the wheels)

so i need to calculate the torque... at the wheels , and then decide on the gearing ratio! this decision is obviously indicative on the paramators of the motor i have! and the goals i want to achieve! The Motor i have has a max RPM of 5200, and a peak torque of 7.56NM

can anyone show me best how to perform these calculations ? i understand that i need acceleration ! can i assume constant acceleration ? if that is the case can i just say i would like the car to accelerate to 60km/h in 10 seconds

... any help will be much appreciated !

engstudent08

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# TORQUE calculations for Brushless dc motor.

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