Well, I have only a high school education. Does that make me more to your liking? :)
Electric generators are not real efficient. Like an alternator - they waste a lot of energy as heat.
You drag one on a wheel, and it will use energy to do so. Makes sense, right? Gotta put energy into the wheel to make it go around, to make the alternator go around?
So, you lose energy doing this while you are powering the car to go forward.
The only time you can gain any power is when you are trying to slow the car. Then any energy the alternator makes will also be slowing the car down. Won't heat the brakes quite as much, will power up the alternator some.
But here's the rub: You need to carry the extra wheel, alternator, and control devices with you all the time. So your car will weigh more. A heavier car takes more fuel to drive around.
And, braking is a big use of energy - you need a pretty big alternator & big power cables & such to capture a whole lot of energy in a short period of time. The nature of braking - a little whimpy alternator or generator won't do it - needs to be big & beefy.
So, the contraption will be kinda heavy.
Now, the question is, will you capture enough energy back into a battery while braking, to make up for the extra energy you need to get moving again with the extra weight of the alternator & all the controls & such?
Will the thing give you more back than what it uses while riding along?
A whole lot of research has been done on this in electric & hybred vehicles, and some use it. But it is not easy, or free, energy. You really have to design it out carefully, and it only gives back a tiny little bit more than it uses.
Make sense? If not, why not? What part do you disagree with?
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Today's Featured Article - The Rescue of a Fordson F - by Anthony West. Introduction I live in the UK and have for many years restored Fordson tractors (in the main model N's). I have also restored and shown model F's, E 27N's, Field Marshall Series 2, David Brown Cropmasters and the old rey Fergeson T 20. At one time I had seven restored examples which were shown and used in ploughing matches. As most restorers, I have a number of war stories I can relate on a range of topics that may help other like minded and interested people. Perhaps my first p
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