My 8:1 ratio gives me over 6400 rpm at the alternator. Big to little ratios create torque. Pull the knob off of an old car stereo and then try to turn it up.
The whole point is to keep the systems voltage at usually 13.8 VDC so that i can connect an inverter to the same battery as the air compressor and the alternator, and get AC power as long as high-pressure air is being released to spin the wheels.
Nothing new about using compressed air to do mechanical work. Simply using energy stored in battery to store energy in tank to spin alternator and restore energy in batt.
Since your last posting you still have not told us why you want to build this setup that does nothing more that waste energy.
I will address one of your comments. A big wheel spinning a little pulley does not automatically mean you will produce torque sufficient to match the torque requirements of the generator in question. The generator will set the torque requirements and I suspect that the 26 inch wheels will not be able to produce torque to match the generator's requirements.
You will still have to put in electrical power to run the compressor, so you are using electricity to compress air, which you are then using to generate less electricity than you put in. What's the point?
If you are thinking it will run without any input of energy you are wrong. There are lots of perpetual motion machines that people have dreamed up. They all have one thing in common: they don't work.
You end up at an energy deficit, which means you get less energy than that you have put in. You keep posting the same question, and no sensible answer does for you. I agree with Ricki, try it and see the result for yourself. That is the only way to get you wise on this aspect.
It's not going to put out the air volume you need. Go ahead and try it, it's going to be the only way to convince you it's not going to work.
NOT the little plug-in compressors, but a 12V or 24V DC compressor that's designed for car suspensions and air horns on big trucks.
Can be purchased mounted to a tank with an air pressure switch that maintains pressure in the tank between 165-200 psi. These compressors are designed to provide high pressure at low amps. Most rated at about 20 amps @ 12VDC max.
Not an impossible load for a 63 amp car alternator. Use the high-pressure air to spin two 26" bicycle wheels with one attached to the 3" pulleyon the alternator by a belt. Over an 8:1 ratio means spinning the bicycle rims at 800 rpm = over 6400 rpm at the alternator. Plus big wheels spinning little pulley gives torque.
