Originally posted by BrianFlanders
My mechanical/electrical skills are practically nonexistent but I have always wondered why the rear wheels (whichever ones are not being powered by
the engine) cannot be used to generate electricity as long as they're turning anyway?
I'm sure some engineer must have thought of this so why aren't they doing it? Or are they already?
You could use the momentum of the car to generate electricity, but only while you a breaking. That's already used on many hybrids and electric cars,
and takes the energy usually wasted in stopping, and turns it into power.
But this cannot work while normally running the car. The car moves because there is an engine or motor propelling it. If you start harvesting power
from the wheels why the car is running, you aren't getting any free energy. You are simply increasing the load onthe car's motor or engine, and then
inefficiently transferring that power through the car's drive train, and then into electrical energy.
Harvesting electricity off the wheels is no different than simply hooking up a gas motor to a generator and generating electricity that way. Except
you waste far more energy, as the motor isn't directly connected to the generator, it first has to loose energy as it makes its way through the car's
drive train. This idea simply cannot work, period.
The OP's idea could work, as in you could potentially take an internal combustion engine and convert it to electrical power by use of electromagnets
to push the cylinders instead of using expanding gasses like normal. Although it will accomplish nothing that a normal electric motor can't
accomplish, and again it would be much less efficient, meaning you turn your engine into an electric motor, you loose tons and tons of energy as
waste, instead of taking electrical energy and directly translating it into rotation like you do with an electric motor, you are wasting energy moving
all these other non important parts of the engine. An engine is built to withstand great pressures and heat, it's a horrible base for an electric
So you get your electric engine running,what's the point? What have you accomplished? You could have gone and bought a 50hp electric motor far cheaper
and it would work far better. The idea that you can get free energy from putting magnets on an engine just cannot work.
You aren't getting free energy because you are still consuming a lot of energy. The cylinders in a motor move because of extreme pressure from the
combusting fuel/air mixture. There are huge amounts of energy being fed into this system via the gasoline. The energy of the gasoline is converted,
via the pistons. to rotational force to move the car.
With the OP's idea, you are going to have to have a massive bank of batteries in your trunk, that run to extremely powerful electromagnets in the
cylinders. These magnets USE energy, they do NOT produce energy. You pump energy in, and you get magnetic fields as the result. If you use these
fields to move the pistons, you are just replacing the energy input of gasoline, to the energy input of stored electrical energy, from your
Those batteries need to be charged somewhere, meaning you are still USING energy, not producing it, not saving it, nothing, you are using energy, and
using it far less efficiently than other methods we currently have.
Those batteries will not self charge. You could have a solar pannel, but then again why not just get a regular electric motor? It would offer better
performance and be more efficient.
It seems many of the proponents of free energy devices quite simply don't have the first clue how any of this stuff actually works. Magnetism isn't a
power source. Just like gravity isn't a power source. Hydroelectric power plants do not get their energy from gravity, they get their energy from the
sun. The sun used energy to evaporate water, carrying it high up, as it falls you can extract energy from it, but you aren't extracting energy from
the gravity pulling it down, as you are only extracting energy that was ALREADY put into it by the sun.
Magnets cannot produce energy, They can take one form of energy (mechanical) and translate it into another form (electrical) but they create zero
energy, they actually consume energy in the process. An electrical generator doesn't use magnets to produce electricity, it actually doesn't produce
energy at all. It simply transforms one, already existing source of energy, into a different form. Such processes ALWAYS have a measure of loss,
meaning anytime you transfer energy into a different form, that process itself costs energy.
People think money isn't real, and that it's a fabricated concept. It's not. Nature has been using money in the form of energy since it's beginning.
Certain actions require energy to be paid, others can release energy, but that energy didn't get made right there, it simply got released. We have
never created energy in our lives, we only release it, or transfer it from one medium to another.
edit on 3-9-2013 by James1982 because: (no