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Old 05-31-2018, 04:07 PM   #25 (permalink)
redpoint5
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Join Date: Aug 2010
Location: Oregon
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Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Prius Plug-in - '12 Toyota Prius Plug-in
90 day: 57.64 mpg (US)

Mazda CX-5 - '17 Mazda CX-5 Touring
90 day: 26.68 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)
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Quote:
Originally Posted by Xist View Post
This is way too complicated! I will just keep under 100 KPH!
There are online calculators where you can enter the vehicle Cd and frontal area, and it will calculate HP required for a given speed. Find a car with an efficient aero shape, and then plug the numbers in to find the required HP. The amount of power needed at the target speed should be 35% of max horsepower, and the gearing should be such that the horsepower is achieved at 75% of peak torque.

Yes, fairly complicated.

EVs operate between 85-95% efficiency throughout the range, so they are good for just about any speed or operating condition.
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