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Forum Index : Windmills : Changing Gears

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govertical
Guru

Joined: 11/12/2008
Location: United States
Posts: 383
Posted: 09:47pm 07 Jun 2012
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Hi, when the PMA is working again, put a hand crank on it and give it spin with a load attached. It will give you a good sense what RPM range will be needed from the blades. Just a suggestion.
just because your a GURU or forum administer does not mean your always correct :)
 
goingbroke

Newbie

Joined: 29/05/2012
Location: United States
Posts: 21
Posted: 04:55am 08 Jun 2012
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Hi govertical,That is a great suggestion. I have a RPM meter, at least that will put me in the ball park.

 
mac46

Guru

Joined: 07/02/2008
Location: United States
Posts: 412
Posted: 03:03pm 19 Jun 2012
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going broke,

When and or (if) you need to gear this vawt up I suggest you try roller chain with sprokets rather than v-belts or toothed belts. (I learned this from Cris Olson's projects), there is far less energy loss, you need all you can get directed at spinning the alternator.

Mac46
I'm just a farmer
 
goingbroke

Newbie

Joined: 29/05/2012
Location: United States
Posts: 21
Posted: 05:35pm 20 Jun 2012
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Hi Mac, When I had my horizontal I tried the chain thing. But all I did was drive my self crazy. Either I could not find the right bore, tooth count or the same pitch. So I just went the V belt way. But Thanks,

 
electrondady1
Senior Member

Joined: 12/02/2009
Location: Canada
Posts: 208
Posted: 06:25pm 20 Jun 2012
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maybe the v belt will stop the transmission of that sound gizmo was describing on his lenz2
 
goingbroke

Newbie

Joined: 29/05/2012
Location: United States
Posts: 21
Posted: 03:53am 21 Jun 2012
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If it does I will let you know............

 
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