Hi, I heard alternators make great motors, I have one which I got from a gasoline genset and now would want to turn it into a motor, how do I do it?
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Listen the old GM Delco Remy alternators were wound in series ore parearel configuration to achive generator/starter effect they simply do not use bridge rectifier at all those 3 wires are simply put together and the 2 pairs of field windings 1 is put at baterry terminals the other terminals from the secundary alternator field winding are shorted together so basicaly you run ac generator to indction motor ore it will became syncronis motor .
There is posibility to turn alternator to bldc motor as well.
Back in the old days peopel used 1 dead lead acid baterry and 1 charged and they used dc motor like starter motor from a car they used only the polarity difference from that starter motor to desulfate baterrys .
So high voltage is flowing to low voltage so if the starter motor stops simply swap the leads over to go same direction ore have swichabel gear box.
You can use transformer ,baterry and 1 dc motor as well.
So I understand what you want .
It does exist as long you have voltage potential difference the electric motor will spin .
So you need switching circuet to reverse voltage and current flow when you sicesfully transfer power to dead baterry simply reverse it again and again .
So thats the john bedini circuet .
North East starter generators used such methodes they are called compound sg's.
Delco hade rotary converters inverters and transformers it was comon in the old days to use 4 commitator rotors so indead you culd gave dc + dc - ac and ac out of phase so basicaly it is posibel.
Ither way useing just ac ore the old compound dc sg's worked that way by useing just voltage potential difference.
Lead acid baterry if it has greater voltage potencial after some time it becames thermal baterry who reacts to enviroment chamges aka weather conditions.
So your baterry holds charge and discharges faster at low temperatures.
So please see the old SG's how they were designed ,ore use 2 car delco alternators they hade bypass wires on their voltage regulators.
I hope this help you some what.
Compound sg's work with compound multi stroker engines be awere of that fact they have closed loop egr system and they have fuel recovery system by useing bacteria .
The exaust system was chemical to chemical conversion methode .
Those same compound engines used dual ignition .
So thats what you are after .
Use modified hit and miss engine stile with ethanol/methanol vaporisation not injection.
Ore use wind ore water with tesla pumps to air your compound sg's.
Thats proper way how you wuld achive power regeneration.
Be aware only thing you can alter are bacteria and elements .
Evry thing ells are methode of conversions!
For me thats ordinary clock works.
See please how papp engine work ore lanz bulldog tractor piston lock how it works.
Then you will understand how to modify hit and miss engine with compound sg's assistance .
So hope this helps you some what to understand how it can be done.