Electric model Car design calculations help.

AI Thread Summary
To calculate the force (F) for the electric car design, it's essential to consider that maximum speed is achieved when engine force equals air resistance plus friction, which complicates direct calculations without those values. The user has specified a maximum speed of 2 meters per second and a mass of 1.45 kg but lacks information on air resistance and friction. Additionally, to determine torque at the wheel, knowing the wheel radius of 28 mm is necessary, but further details on force are required for accurate calculations. The discussion highlights the challenges in performing calculations without complete data. Accurate design calculations will ultimately depend on empirical testing or more detailed specifications.
arjg89
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Hello,

I am needing help with some calculations for my project. I have to design an electric Car design and have to include some calculations. Given the maximum speed of the car is 2Meters per Second and the the mass of the car is 1.45kg:

Calculate F

And how do i calculate the torque at the wheel if I know the radius of the wheel which is 28mm.

Thanks.

arjg89.
 
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welcome to pf!

hello arjg89! welcome to pf! :smile:
arjg89 said:
Given the maximum speed of the car is 2Meters per Second and the the mass of the car is 1.45kg:

Calculate F

the maximum speed is reached when the maximum force (F) of the engine equals the air resistance plus the friction within the engine and the bearings (which increase with speed)

if you don't know the air resistance or the friction (and i don't see how you can know it), then you can't find F without actually building the car :wink:
 
I don't actually need to know the air resistance or the friction for my assignment.. This is all the information I have been given..
 
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