I am new at this field of EV,I have a background in RC airplanes if that helps
The RC field tend to use very bleeding edge technolgies(like LiPo and Brushless motors) before they were wildly used everywhere else
I found this 7KW peak,1.8Kg,180RPM/V Brushless DC Motor it cost 99$! (if you leave the page open for a while it will offer you for 96$ (video)
also there is a 300$ motor,2.5Kg,150RPM/V which has about 20HP!(video)
My idea is to do a conversion with 2 of the smaller engines providing 15-20HP,i saw some conversions(Geo Metro,VW Beetle) done using a 50Kg 20HP forklift engine so i guess this pair of engines(weighting only 3.6kg!) can power a light car.
My questions are:
1.Is this possible?are this engines going to be strong enough to power a EV,15-20HP for 200$ sounds really cheap am i missing something?
also can some one give me a estimate of how much power(HP/KW) i need to move a car at X speed of W weight?
just simple function(a estimate of course) that given a standard Drag coefficent(let say 0.38 like a smart ForTwo) i put the weight and speed and get the amount of HP/KW i need
Power is power. So if it requires 20HP to move your car at 50mph, then is really doesn't matter how that 20HP is produced. However this does not account for the acceleration to get the car up to 50mph. And that will be a big problem for these hobby prop motors.
They are impressive machines and carry crazy power to mass ratios. But this is undoubtedly peak power and can be sustained only with the massive air blast over and thru the motor.
Here's a thought experiment for you, or maybe a real experiment. Get yourself two of those motors and the propellers. Mount them on top of your car and see if they will move the car and how fast it can go