HOW TO BUILD A DIY PMA PART 2 permanent magnet alternator

[questboy86]

how much watts it produces @ what rpm

[theshiningeagle]

i dont see it giving power then how it a permanent magnet altenator

why it is called like that

where is the free energy i dont see it

how many amps u got ????

too many questions

[atlas40301]

A 3 phase induction motor (made in China or made in America) is more economical to convert. All you need are permanent magnets embedded on the rotor. Ferrite or ceramic magnets will do.

[thiagocruzy]

I just converted my rotor to a makeshift wooden block with some neo magnets. Im getting over 100v just hand turning it. Did i overkill on the magnets? The amps are off the chart aswell!!

[jeffmolly1]

@thiagocruzy Sounds like your doing something right to me.

Jeff

[thiagocruzy]

@jeffmolly1 Thanks man, your videos are awesome! Couldn't have done this without your info. Keep up the good work!

[onlinelondon]

It was so interesting to watch those 2 instruction videos, as I am building one windmill right now; and I learned a lot from this, avoiding mistakes; but two things were not said, that I was hoping to hear.... how does the diameter of those magnets you replace match, and are all car alternator of the same diameter or size???

And; car alternators are very easy to revolt; are those PMA very hard to revolt, as the magnets are very strong; I hope you would show that by revolting them by your fingers

[Jamieduk999]

i want to buy 1 of these from you how much £££

[transmissionslipping]

I'm thinking what is PMA LoL... I guess was blinded, not reading well.

[bachhell]

Some beer and a garage made many a happy man.

[movies84601]

I have one of these PMAs and it is very hard to spin the shaft. I have had it on a drill to burn it in for a couple of weeks and it is still hard to spin. Any ideas as to how to improve the ease of spinning?

[MegaMaxemus]

I would keep the fan on for cooling.

[1moeser]

the first one did not go back together very well

[DONNIEDOBUDBEER]

im a fabracator welder .im getting into to this build your own stuff . let me know how i can help

[chastjones]

Jeff. I assume you can leave out the diods and run this PMA 3ph AC? What if I wanted to connect 2 or more in parallel to boost the amps? Can I do that AC or would I have to output DC? Have you done any work with gear reduction to increase the PMA rpm?

[hgladyston21]

ola sou do brasil e gostaria de pode adiqueri estes imas?????????????

[csscontracting]

Hi there...I'm putting together a very effective hho unit and would really like to have more power running through the cells......what would you recommend

[wwilliam7]

cool :)

[daveeyes]

It's true that certain paints can help radiate heat off. The best color is black, as in "black body radiation". I use Krylon's flat black.You would, of course, want to paint very, very carefully, so you only paint the outside of the alternator, and not into any of the ventilation holes or electrical connection areas. (For example, volts X amps = watts. So, 500 watts at 12 volts = 500/12 = 41 amps, and that's one heck of a lot of current -- use thick wiring! 41 amps can start a car.)

[gatekeeper1006]

How much power is used or lost if a regular factory rotor is used.

Is it practical to use a factory 200amp GM alternator for a wind generator; if so .....

what size/feet blades would you recommend?

Thanks

[jeffmolly1]

@gatekeeper1006 you cannot use a factory rotor.if you do it will have to hit 1200 rpm's to excite the stator and put out power. about 30 mph winds to get that.

jeff

[Wurdswurth]

Very informative, thank you. Who produces the fine wire stators, and the different cores? How much do they usually go for?

[jeffmolly1]

@Wurdswurth we sell them on our web site.

jeff

[ir8prim8]

At what rpm would the generator need to run at to produce electricity. and how much can one of these generators produce?

[crystalidx]

What is the purpose of the PMA?

[jeffmolly1]

@crystalidx to produce electricity

[jeffmolly1]

@crystalidx depends on the stator core you use. they can produce electricity at 50 rpm.they can produce 1500 watts.

[FlyinBrian777]

@crystalidx They're for wind generators, for making your own electricity.

[seanthenry]

Thanks for the info. I just wanted to state that a way to help cool the PMA is to strip the paint on it and repaint it with Krylon crackle (or crinkle) paint it increases the surface area and helps remove heat. That has been tested on dropping the temp of superchargers in cars and works well.

[websitemakerjonathan]

why you put you address ?

[jeffmolly1]

@websitemakerjonathan

missouri wind and solar is our web site

[jeffmolly1]

@M3XEM YOU CAN USE IT FOR GAS ENGINES,HYDRO POWER,WIND TURBINES ETC.

IT WILL NOT RUN ON IT'S OWN.

[Fireball9392]

So how do we spin the alternator without using a gas engine?

[jeffmolly1]

@Fireball9392

it's used as a wind turbine or hydro power.

jeff

[arthus1971]

good video, why put a stator of 48 volts, if you used a rotor of 12 volts?, why have you eliminated the regulatory box, how to stabilize the output voltage?, well done and thanks

[jeffmolly1]

@arthus1971

the rotor has nothing to do with the voltage,it's amps.

the stator core determines the voltage.

[jeffmolly1]

the alternator case you can use is from 1978 chevy camaro,8 cylinder,350 engine with air.

gm delco10DN,10SI OR 12SI ALTERNATOR

[janetwon]

hey jeff , just read your comment with barry obama i hope everything ok at home. could you send information on where to buy stator coils and rotors thanks

[jeffmolly1]

@janetwon

we sell them on our web site,missouri wind and solar.

[BTomTomTom]

for someone new it's difficult to understand

[mister406]

Nice video Jeff,but a question.What is the purpse of raising the voltage output? I have several DC motors that will produce overr 100volts open. I thought that it was not safe to send high voltage to a battery.I Does the charge controller work t watch this?I am new ,but eager to learn

[jeffmolly1]

to @mister406

some grid tie inverters require high voltage to operate.

[lad18913290]

i've personally experimented with building my own axial flux alternator, the next best alternative to DIY PMA's for wind turbines,..and it's a lot of work. the best thing about the design in this video, is that one doesn't require a gear box to achieve the necessary rpm's. a quick note, i also noticed another video, by another user, who achieved high outputs on a GM alternator with a similar method, but also by adding more rotors. great video jeff!! just what i've been looking for!! :)

[thelastofthemohikans]

ok but, could u please put the pma to work?

[lad18913290]

@thelastofthemohikans

i've seen similar PMA's in action - different manufacturer's, but the same idea. these work very well. of course, a standard car alternator requires high rpm's in order to charge, but by at least replacing the original rotor with say, 14 52 grade neodymium mag's, will significantly reduce the required rpm, and up the voltage...pretty cheap way to do it too, and fool proof.

[jeffmolly1]

@thelastofthemohikans

it is used as a wind turbine motor or for hydro power.

[joliecide]

@jeffmolly1 jeff, how exactly is it used as a turbine motor? it's attached to a main generator? if used as a consumer device, will it require excitation from the grid?

[jeffmolly1]

@joliecide you mount blades on the rotor shaft with a blade hub. no excitation from the grid.

[cortedemico]

could magnets and a similar configuration also be used to make a perpetual motion electric generator?

[silverbird58]

@cortedemico I for one dont beleve in this type of motion . however lookup magnetic model t engine?? it's interesting.

[spopajr]

U need to show what this does or explain the use for it...

[jeffmolly1]

it's used to make a wind turbine or hydro power or on a gas generator etc.

jeff

[sosweetsan]

Great video Jeff,

Just cuirious to know how much power it will produce?

[lad18913290]

@sosweetsan

the one shown in the video produces 500watts+

[pacohouston]

im sorry i dont understand i can use a pma in a v8 engine and run all my accesories with it

[jeffmolly1]

no you cannot.pma stands for permanent magnet alternator,it's not the same as a car alternator.

jeff

[MrEasyrhino]

awsome vid Jeff ! You have opened my eyes to utilizing an alternator for a wind generator.thanks again and when I do it I'll be talking to you about the peices I'll be needing.thanks again

[jeffmolly1]

your welcome mreasyrhino.

jeff

[thundamc]

Great Vid many thanks, Why does a strong magnet hurt you?

[TheButtaz24]

to jeff would this apply to larger alternators

[best333WillC]

Can one of these be built to put out 110 volts so you can run house hold items?

[jeffmolly1]

not that i know of,you would have to run it to batteries than an dc to ac inverter to get 110 volts.

[BabyNewGurl]

i learn something new

[KenMacMillan]

What kind of wattage can you get from your super core 120 if it were mounted to a standard small block V8? Would it be good for an under hood welder?

[jeffmolly1]

the SC120 Would produce 42 amps/265 volts @3000 rpm and higher.

[shotgunfetus]

where can I buy the stator and rotor kit?

[jeffmolly1]

stator and rotor available at missouri wind and solar, see end of video

[PauliesCustoms]

the purpose in changing the stator coil is the size (diameter) of the windings and the number of them, the ratio of the pick-up coils will dramaticly change the output of your PMA or any other generator.

Paulie

[kannahoot]

I Just don't understood , that's  good for what? and how does it works.... and WHY change the stator...how to start that?

[TheButtaz24]

is that a delco remy alternator?

[jeffmolly1]

the case is a delco remy 10si

[ourkids12341]

hi jeff i have got 5 80w panels at 12v and one at 24v it is a 110 v . 4 panels=48v can i put 80v and the 110 24v in parallel and can i put them in the same controller. the controller is solarix 4401 48v charge controller thanks. jeff

[DundoMarinko]

good work jeff  T H A N K Y O U

[IvanRilsky]

man this no so cool !! u foget to sey haw we CAN bild this rotor MAN pls show as polarity to this magnet on rotor. some oder like me no live in USA and cant buy it.

[jeffmolly1]

you can't build this rotor.but you can buy it.

we ship international man.just email me and i will give you shipping quote.

Jeff

[IvanRilsky]

i see somting hard to cant buld it just need know polarity i live in Bulgaria shiping cost like 60$ man i work half monts for this.

[eltonxhafa]

Hi there Mr. jeffmolly1

I did not understand why you changed the stator and with what other type of stator you replaced it? to me it looked the same as the first one that was already in it. (Excuse my ignorance)

[BudsMoKing]

Have you considered using 15 magnets on the rotor? This would create a Muller-type generator/alternator and i believe it would greatly increase your low-speed(any speed) efficiency by greatly reducing, or eliminating, the "cogging" effect. I did a youtube search for "muller generator" and all i come up with is the videos by doug konzen an the rotoverter conversion (which is a perfect companion to your 3phase pma). If you don't know of the rotoverter everyone watching this should check it out!

[jeffmolly1]

to bubsmoking

no we have not tried 15 magnets.

[jeffmolly1]

to pife2u

we have 3 different rotors,slant core plus,power core and super core.yes the slant core and power core are angled to eliminate cogging.these 2 are for low wind turbines and just came out in may 2009.the slant core plus is 20% more efficient than our old slant core,and the power core is 50% more efficient than our old slant core.

[Sean4084]

Hi Jeff  I started that PVC unit you talked about not to do! Thanks, because I did not put it in service. So how can a guy order those magnets and how much do they cost? Also how do keep the alt. from the elements?I'm pretty new at this so I could use some more input.

[jeffmolly1]

to sean4084

our pma is made to be left exsposed to the elements.rain,ice ,snow doesnt harm them or there performance.

the magnets on our rotors are specially designed for us and there not for sale.the rotor and stator or complete pma can be found on our pma parts page.

[Sean4084]

Thanks for the pvc warning ! I was almost done, but I did not put it in service. So how do I order some of your products?

[jeffmolly1]

to sean4084

all the info is at the end of our video.

thanks

[jeffmolly1]

to pife2u

using the parts in this video i built a

scs12p slant core plus pma.i don't know what chart your looking at but it's the wrong one.i will make a video of it putting out the power i stated.torque?start up speed is 3.5 mph wind.

[pife2u]

I looked at the chart for the scs48p because you told pakscienceclub that you used a sc48c stator. Correct me if I'm wrong, but it appears you have 3 different rotors: slant core, slant core plus, and super core. The 12, 18, 24, 48, 60, and 120 numbers are for different stators. The slant core rotors have angled magnets to eliminate some of the cogging. Is this correct?

[turbineguy100]

to pife2u

he uses a sc48c stator core and a slant core plus rotor to make a 12 VOLT/500 WATT PMA used in low wind turbines.

[kasparsjakubovskis]

@pife2u hey there! i was wondering were can i get these rotors(cores) and coils?

[jeffmolly1]

@kasparsjakubovskis we sell them on our website

Jeff

[pakscienceclub]

Thanks Jeffmolly...

Its enough for battery charging....

[jeffmolly1]

to pakscienceclub

at 400 rpm ,14 volts,14 amps,196 watts

i used a sc48c stator core and a slant core plus rotor

[pakscienceclub]

nice work.

can you tell me how many amps you got?

[turbineguy100]

i have built this and it works most excellent,thanks jeff for all the free info,you definetley know what your doing