Now that you have tried in real life you start to find out that the wonderful thing produced by experts doesn't save you any money over building something yourself.

The ultimate thing that determines what you get from a wind turbine is the size of the blades, the wind speed and how well the parts are matched.

You give no information on anything except the useless voltage figures you first quoted.

At best you are playing with something similar to the AirX and it will take a lot of wind to do much. Car alternators are intended to be compact and produce power cheaply at high speed. You eventually have to accept that to get reasonable power from wind you need large blades and a slow and costly alternator or a speed increasing transmission.

Wind generators also needs very high efficiencies in the lowest winds, where power is strictly limited anyway.If you take something designed to produce about 500W with modest efficiency at 5000 rpm you mustn't expect much from it at speeds that a wind turbine are capable of.

Car alternators and small scrap dc motors are being advertised everywhere as the basis of decent wind turbines, in reality they are toys if you want something useful.

I did post a suggestion or two for him.

I read your post,
No details on anything on other than what you got from the machine you bought, just a post.
Then you asked not to have comments. then have them removed.
Got Finn mad at TomW for doing what you asked.

Also, since this was your first time posting, as best I could find. We can't know your abilites with you saying so.
Most new posters give us a little of their back ground and what they're trying to do, not just post open voltage readings.

As you think TomW did, you assmued you knew where TomW was coming from.

I have no requirement to take BS from new people at all.

Contact: IRC

if you are intent on an automotive alternator, you might look up a prestolite/leece neville 110-555jho, at least it has large ball brgs front and rear. it is a large frame truck alternator, and has a much larger diameter rotor and stator than the puny delco 10si which is a joke.

in stock form the 555 will produce about 90 amps into a 12volt battery at around 1500rpm, so i would expect maybe if rewound around 20 or 30 amps at maybe 400rpm.

but you still have the rotor current about a 100 watts worth that is a loss, unless you fit the rotor with neo's.

i would go with the 555 anyday before a delco for a windmachine, at least you would get something that might be useful for all the effort.

check your local hd truck dealers, the core alternators go in the scrap bin, no one will rebuild them because they sell the so cheap you can't afford to invest even an hour in labor to rebuild one. you should be able to get a core for free and they usually only need new brushes or maybe a regulator.

of all the automotive alternators the 555 is probably the one most able to get you something in return for your effort.

again the 10si is a joke in my opinion,