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Forum Index : Windmills : Would this work

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1woodman

Newbie

Joined: 18/10/2008
Location: United States
Posts: 3

Posted: 02:20pm 18 Oct 2008

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Just puling the rope it puts out 5-6V and idles at 12V.
It says it puts out 55 amps of gharging power and 80 amps of starting power,I asume this is at full speed?
Question: what is it this preventing more than 12V?

Question: what is the difference in the way a low rpm generator is made compaired to a high rpm generator?

Edited by 1woodman 2008-10-20

The closer one comes to the truth, the more he is approached by a lie.Infowars.com

windlight
Guru

Joined: 03/03/2007
Location: Australia
Posts: 331

Posted: 01:58am 19 Oct 2008

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Electronics

"I like this place and willingly could waste my time in it" - (Act II, Scene IV).

Bernie the Bolt

Regular Member

Joined: 26/10/2006
Location: United Kingdom
Posts: 45

Posted: 06:03pm 19 Oct 2008

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A low rpm generator usually has a larger diameter rotor than a high rpm one. ie compare the core diameter of car alternator (about 3") with a F&P the guys and gals on this site use (can't be bothered to leave my warm fire on a chilly French evening to go and measure one in my workshop but I am guessing about 14") This means the coils in the larger rotor are cutting through the magnetic field fast enough to generate the required voltage at a lower rpm than a smaller one.
Don't even think about trying convert that genny to wind power it is designed to run at about 2000 - 3500 rpm
We are looking for gennys that will run at about 200 - 500 rpm without gearing.

Bernie the Bolt

I'd rather be sailing!

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