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Discussion Starter · #1 ·
I'm looking for a way to make a cheap and easy to build (by theory) controller.

I've poked around on the forums and really liked the idea of the mechanical PWM controller (
HTML:
http://www.diyelectriccar.com/forums/showthread.php/mechanical-pwm-46258.html
) but it looks like there are too many limitations for an EV application.

This sounds like a dumb question to me, but what the heck. Is there any reason why I can't just put a large potentiometer in series with the batteries and the motor and use that as my throttle to control the power output?

Have there been any other feasible attempts to build a simple (DC motor only) controller for EV applications?

My specialty is ME, not EE so try to explain it in a way that will make sense to me! :D
 

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Discussion Starter · #8 ·
I saw that on the budgetev link (http://www.poormansev.com/id24.html) the controller looks like it connects a varying series of batteries directly up to the motor through that "stick shift" to control the power output to the motor in the form of a finite number of power levels.

The first thing that popped into my head after look at it was if the batteries will drain un-evenly.

Should I even bother looking into this?

Thanks for all your guys'/girls' help! I am learning A LOT and your is very much appreciated! :D
 
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