Posted by tim on April 22, 2008, 12:37 am
> tim wrote:
>> wrightbmjr@aol.com wrote in
>> ps. com:
>>
>>
>>>
>>>> Hey There:
>>>>
>>>> I have a farm windmill that produces up/down motion, about 4
>>>> inches of travel. Any idea how to convert this action into
>>>> rotary motion, so as t
>>>>
>>> o
>>>
>>>> run a generator or alternator?
>>>>
>>>> Thanks.
>>>>
>>>> Glenn
>>>>
>> What would be the point. The one thing I can guarantee is that
>> the windmill will not pump at a constant speed, and that a
>> generator/alternator needs a constant speed to produce a given
>> voltage.
>>
>> Now, you might want to use the windmill to pressurize an air
>> tank to a few hundred PSI or so, and then use the air to spin
>> the genny. I haven't done any calcs on the volume of air
>> needed or the PSIs practical, but it is an idea. Of course,
>> the genny would only be good for charging batteries, since it
>> will be prone to starting and stopping depending on the air
>> available.
>>
>> Frankly, as inefficient as they are, you would be better
>> putting a WinCharger head on the tower and using that to charge
>> your batteries. At least that way you would have a system
>> doing what it was designed to do, and not a kluge.
>> ** Posted from http://www.teranews.com **
>>
>
>
> LOL, no windmill spins at a constant speed. The old windpumpers
> produce great torque and spin in low
> wind conditions. Gearing one up would be simple, and the cost
> compared to a decent sized windcharger
> would be minuscule. Why everyone has to complicate simple
> solutions is a mystery.......
>
So you are saying let the charge adaptor handle the wildly varying
voltages, just dropping out whenever it gets to low to charge?
** Posted from http://www.teranews.com **
Posted by Balanced View on April 22, 2008, 9:40 pm
tim wrote:
>
>> tim wrote:
>>
>>> wrightbmjr@aol.com wrote in
>>> ps. com:
>>>
>>>
>>>
>>>>
>>>>
>>>>> Hey There:
>>>>>
>>>>> I have a farm windmill that produces up/down motion, about 4
>>>>> inches of travel. Any idea how to convert this action into
>>>>> rotary motion, so as t
>>>>>
>>>>>
>>>> o
>>>>
>>>>
>>>>> run a generator or alternator?
>>>>>
>>>>> Thanks.
>>>>>
>>>>> Glenn
>>>>>
>>>>>
>>> What would be the point. The one thing I can guarantee is that
>>> the windmill will not pump at a constant speed, and that a
>>> generator/alternator needs a constant speed to produce a given
>>> voltage.
>>>
>>> Now, you might want to use the windmill to pressurize an air
>>> tank to a few hundred PSI or so, and then use the air to spin
>>> the genny. I haven't done any calcs on the volume of air
>>> needed or the PSIs practical, but it is an idea. Of course,
>>> the genny would only be good for charging batteries, since it
>>> will be prone to starting and stopping depending on the air
>>> available.
>>>
>>> Frankly, as inefficient as they are, you would be better
>>> putting a WinCharger head on the tower and using that to charge
>>> your batteries. At least that way you would have a system
>>> doing what it was designed to do, and not a kluge.
>>> ** Posted from http://www.teranews.com **
>>>
>>>
>> LOL, no windmill spins at a constant speed. The old windpumpers
>> produce great torque and spin in low
>> wind conditions. Gearing one up would be simple, and the cost
>> compared to a decent sized windcharger
>> would be minuscule. Why everyone has to complicate simple
>> solutions is a mystery.......
>>
>>
> So you are saying let the charge adaptor handle the wildly varying
> voltages, just dropping out whenever it gets to low to charge?
> ** Posted from http://www.teranews.com **
>
It's not going to vary with a water pumper any more than any other type
of mill.
Posted by harry k on April 22, 2008, 11:35 am
> com:
> >> Hey There:
> >> I have a farm windmill that produces up/down motion, about 4
> >> inches of travel. Any idea how to convert this action into
> >> rotary motion, so as t
> > o
> >> run a generator or alternator?
> >> Thanks.
> >> Glenn
> What would be the point. The one thing I can guarantee is that the
> windmill will not pump at a constant speed, and that a
> generator/alternator needs a constant speed to produce a given
> voltage.
??? so the alternator in youir car won't charge your battery? It for
sure doesn't run at a constant speed. The old, small winchargers that
were on almost every farmstead back before REA must not have worked
either as their rpm varied from 0 to 'really motating' but somehow
kept the batteries running the house radio charged.
True that you have to first charge the battery and then make all you
use from the battery, not direct off the wind machine.
Harry K
> Now, you might want to use the windmill to pressurize an air tank
> to a few hundred PSI or so, and then use the air to spin the genny.
> I haven't done any calcs on the volume of air needed or the PSIs
> practical, but it is an idea. Of course, the genny would only be
> good for charging batteries, since it will be prone to starting and
> stopping depending on the air available.
> Frankly, as inefficient as they are, you would be better putting a
> WinCharger head on the tower and using that to charge your
> batteries. At least that way you would have a system doing what it
> was designed to do, and not a kluge.
> ** Posted fromhttp://www.teranews.com **
So what happened to the gen/alt needing a constant speed?
Harry K
Posted by Solar Flare on April 22, 2008, 12:45 pm
Wind has a power factor based on the cube of the velocity. A car generator
has an almost unlimited amount of power behind it and won't stall that big
engine when you turn on your fridge. A wind powered turbine will.
What happened to your acknowledgeable question?
> wrightb...@aol.com wrote
> com:
> >> Hey There:
> >> I have a farm windmill that produces up/down motion, about 4
> >> inches of travel. Any idea how to convert this action into
> >> rotary motion, so as t
> > o
> >> run a generator or alternator?
> >> Thanks.
> >> Glenn
> What would be the point. The one thing I can guarantee is that the
> windmill will not pump at a constant speed, and that a
> generator/alternator needs a constant speed to produce a given
> voltage.
??? so the alternator in youir car won't charge your battery? It for
sure doesn't run at a constant speed. The old, small winchargers that
were on almost every farmstead back before REA must not have worked
either as their rpm varied from 0 to 'really motating' but somehow
kept the batteries running the house radio charged.
True that you have to first charge the battery and then make all you
use from the battery, not direct off the wind machine.
Harry K
> Now, you might want to use the windmill to pressurize an air tank
> to a few hundred PSI or so, and then use the air to spin the genny.
> I haven't done any calcs on the volume of air needed or the PSIs
> practical, but it is an idea. Of course, the genny would only be
> good for charging batteries, since it will be prone to starting and
> stopping depending on the air available.
> Frankly, as inefficient as they are, you would be better putting a
> WinCharger head on the tower and using that to charge your
> batteries. At least that way you would have a system doing what it
> was designed to do, and not a kluge.
> ** Posted fromhttp://www.teranews.com **
So what happened to the gen/alt needing a constant speed?
Harry K
Posted by harry k on April 22, 2008, 10:46 pm
> Wind has a power factor based on the cube of the velocity. A car generator
> has an almost unlimited amount of power behind it and won't stall that big
> engine when you turn on your fridge. A wind powered turbine will.
> What happened to your acknowledgeable question?
Yes, windpower has restrictions on useable power, rpm ranges etc. but:
" What happened to your acknowledgeable question?" Just guessin here
as that doesnt' really mean anything. You seem to think that my post
is incorrect
I am addressing your statement that a gen/alt requires a constant
speed to produce useable power. That is wrong. I pointed out two
different applications that do _not_ require constant speed. They
don't even need a constant speed to produce a "given voltage" as both
the automobile alternator and the old wincharger plug along pumping
out 12 volts (car) and 6 volts (wincharger) DC regardless of rpm.
I think you are confusing voltage with type of current. For AC
current you do need a constant speed generator/alternator.
The old, small, winchargers only had a 2 blade prop of around 6ft
diameter and were quite productive. Limited power output true but
enough for the purpose.
> > wrightb...@aol.com wrote
> > com:
> > >> Hey There:
> > >> I have a farm windmill that produces up/down motion, about 4
> > >> inches of travel. Any idea how to convert this action into
> > >> rotary motion, so as t
> > > o
> > >> run a generator or alternator?
> > >> Thanks.
> > >> Glenn
> > What would be the point. The one thing I can guarantee is that the
> > windmill will not pump at a constant speed, and that a
> > generator/alternator needs a constant speed to produce a given
> > voltage.
> ??? so the alternator in youir car won't charge your battery? It for
> sure doesn't run at a constant speed. The old, small winchargers that
> were on almost every farmstead back before REA must not have worked
> either as their rpm varied from 0 to 'really motating' but somehow
> kept the batteries running the house radio charged.
> True that you have to first charge the battery and then make all you
> use from the battery, not direct off the wind machine.
> Harry K
> > Now, you might want to use the windmill to pressurize an air tank
> > to a few hundred PSI or so, and then use the air to spin the genny.
> > I haven't done any calcs on the volume of air needed or the PSIs
> > practical, but it is an idea. Of course, the genny would only be
> > good for charging batteries, since it will be prone to starting and
> > stopping depending on the air available.
> > Frankly, as inefficient as they are, you would be better putting a
> > WinCharger head on the tower and using that to charge your
> > batteries. At least that way you would have a system doing what it
> > was designed to do, and not a kluge.
> > ** Posted fromhttp://www.teranews.com **
> So what happened to the gen/alt needing a constant speed?
> Harry K- Hide quoted text -
> - Show quoted text -
Harry K
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>> wrightbmjr@aol.com wrote in
>> ps. com:
>>
>>
>>>
>>>> Hey There:
>>>>
>>>> I have a farm windmill that produces up/down motion, about 4
>>>> inches of travel. Any idea how to convert this action into
>>>> rotary motion, so as t
>>>>
>>> o
>>>
>>>> run a generator or alternator?
>>>>
>>>> Thanks.
>>>>
>>>> Glenn
>>>>
>> What would be the point. The one thing I can guarantee is that
>> the windmill will not pump at a constant speed, and that a
>> generator/alternator needs a constant speed to produce a given
>> voltage.
>>
>> Now, you might want to use the windmill to pressurize an air
>> tank to a few hundred PSI or so, and then use the air to spin
>> the genny. I haven't done any calcs on the volume of air
>> needed or the PSIs practical, but it is an idea. Of course,
>> the genny would only be good for charging batteries, since it
>> will be prone to starting and stopping depending on the air
>> available.
>>
>> Frankly, as inefficient as they are, you would be better
>> putting a WinCharger head on the tower and using that to charge
>> your batteries. At least that way you would have a system
>> doing what it was designed to do, and not a kluge.
>> ** Posted from http://www.teranews.com **
>>
>
>
> LOL, no windmill spins at a constant speed. The old windpumpers
> produce great torque and spin in low
> wind conditions. Gearing one up would be simple, and the cost
> compared to a decent sized windcharger
> would be minuscule. Why everyone has to complicate simple
> solutions is a mystery.......
>