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Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - 2 hours 12 min ago
Yes guys even if you short it when there is no wind high winds can and do overcome these iron core motors ,as for stoping it in a good wind forget it!!   nothing at all like my new neo mill with no iron core.
Im sure others have already told you this b...

Re: LED battery substitution

Discussion Board - 2 hours 16 min ago
Quick and dirty dummy cell is a piece of dowel the right diameter cut to length and wrapped with aluminum foil.

Re: LED battery substitution

Discussion Board - Sun, 04/20/2014 - 20:03
How do you get the base off the big one to try and replace the battery pack? Is it glued? Press fit? Any tricks to getting it apart?

Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - Sun, 04/20/2014 - 15:51
Quote from: birdhouse on April 20, 2014, 02:18:15 PMQuote do not try to electric short for braking it just makes them spin faster
i've never heard of this.  maybe the user was opening the circuit and not shorting?...

Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - Sun, 04/20/2014 - 14:44
Seems perfectly possible. The F & P was designed as a salient pole motor and when used as an alternator it will have a very high leakage reactance.

When operating the output will be determined by the combination of resistance and reactance. As the spee...

Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - Sun, 04/20/2014 - 14:18
Quote do not try to electric short for braking it just makes them spin faster
i've never heard of this.  maybe the user was opening the circuit and not shorting? 

does anyone else have experience with a mill spinning faster after shorting?  ...

Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - Sun, 04/20/2014 - 11:36
Well Thank you Shawn, The tower will be tipped down in the event of high winds with a winch. it is only 15 ft high.

Re: 300+ EnerSys 12V190F Batteries - Never Used

Discussion Board - Sun, 04/20/2014 - 09:47
Ok, so after some big orders here in the last few weeks, there are only about 80 of them left.  I imagine they will all be gone in about two weeks at the most, so hop on them while you can.

Re: CHANGING GENERATOR MOTORS 2 Fisher and Paykel

Discussion Board - Sat, 04/19/2014 - 23:12
Hi just to add my two cents  I ran a dual f&p hawt mill for ages (only changed to get more power) and I used a hand carved taperd twisted wood prop it worked just fine I did go 3 meter diameter though do not try to electric short for braking it just...

Re: Active Pitchcontrol

Discussion Board - Sat, 04/19/2014 - 21:38
I got a 6V Wincharger Airline Deluxe but it needs a new blade.  Every farm back in the 1920's - 1930's had one of these too:



That one is a 32V Delco Light Plant.  But they also made them in ...

Re: Active Pitchcontrol

Discussion Board - Sat, 04/19/2014 - 13:59
Wincharger modified blade pitch DIY


 With implementation of the Rural Electrification Act in 1936, however, the wind-powered battery charger’s days were numbered. Even the most remote farms had access to electricity by the mid-1950s, ending the need fo...

Re: the old website

Discussion Board - Sat, 04/19/2014 - 12:33
scroll down to the bottom of the page on the right side hit the --next eight ............

Re: Hugh Piggott blades, Fiberglass, testing and failures.

Discussion Board - Fri, 04/18/2014 - 22:19
The split seam is very interesting to see.  I once had to discard a hundred dollars of cedar that I had not glued properly when laminating.  Perhaps a case similar to yours, either the surfaces were not flat enough, or I did not use enough epoxy in som...

Re: voltage to fully charge batteries

Discussion Board - Fri, 04/18/2014 - 19:10
thanks for the answers.

Re: Micro inverters versus String Inverters

Discussion Board - Fri, 04/18/2014 - 16:34
I would not entertain a high frequency unit.... the commercial ones are substandard for house use, and the DIY would be no better.
Their surge ratings are hopeless.

The simplest way to make a fine 8000w inverter is to just buy the power jack LF control...

Re: no real panels available,can i try with solar garden lamps tiny panels

Discussion Board - Fri, 04/18/2014 - 15:04
If you can find a VW junkyard a lot of them had solar panels on the roof to charge the battery. Ebay will have panels available that could be shipped to you.

Re: Prop out of one piece?

Discussion Board - Fri, 04/18/2014 - 13:43
Hi

I made a garden ornament using a fan from a car. it was a one piece plastic molding with five blades  and asymmetrically spaced, drove an old cycle dynamo and lit a couple of little bulbs, before the days of bright LEDs.

I never worried when the spe...

Re: resistive load bank

Discussion Board - Fri, 04/18/2014 - 12:25
How to measure low ohms with a digital scale:

1)Disconnect the strain gauge, and acquire two kelvin clips or 4 alligator clips or similar.
2)Connect two of the clips through some test leads to the bridge/sense/difference input, where the green and whit...

Re: Hugh Piggott blades, Fiberglass, testing and failures.

Discussion Board - Fri, 04/18/2014 - 12:24
A new set of 3.7m diameter blades MK3 type fiberglass awaiting fitting.


American Cedar laminated blade, with the centre joint starting to open.

Fiberglass blade MK3, finished, weight. About 6.5kgs.


Cedar blade w...

Re: resistive load bank

Discussion Board - Fri, 04/18/2014 - 11:11
Temperature coefficient of resistance for iron is about 5 times that of copper. You mentioned red heat so 600deg C plus so it may be in the right league when hot.

Not sure how inclined it will be to get hot in the short term as the resistance will not ...
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