Wind

[bj]

    Almost no wind today, so put up the next try.  Another GM alt,

with the big Neo in it, but different windings, and a larger size.

    This one put out 39 volts @ 300 rpm, open circuit.

    A half inch differnce in rotor diam seems to make about 10

volt difference.  (same number of winds, same size wire, same Neo)  Just

checked, 5/8 ths inch difference.

    Hopefully have the cable wrapping problem solved.  (thanks to Ghurd)

    Anyway, will post when the wind comes up.

    I know most of you would prefer to build from the ground up, and

I must say your results are great.  I am sticking to the GM's mostly

as a cost saving measure.  I have literally hundreds of these things,

and the time.

    bj

   

[drdongle]

how about some pictures?

[bj]

   Dr.D--will post pics when I figre out how to remain in the

limits.  Damn camera takes wonderful shots, but huge files.

   Sorry, and thanks.

   bj

[DaveW]

  Use something like irfanview (download for free from net) and load your image. Under image click on resize/resample and select the 640 size. Save the reduced image and check it for size before posting. Works great, costs a little download time, and keeps the cookie monster from deleting your pictures.  A small picture is still worth 500 words.

[electrondady1]

bj,

it might be a dead end but have you concidered using the output of your modified alternator to power up a second one .

i would think the second one would need a rewound stator as well.

[bj]

    Electron--hope you don't mind the short version.  Yes, I have thought about that for a few days,  (Hint from someone on this board)  Will try,

and post the results.  Have a bunch of rewinds, from experiments, and

have several pairs of identical winds.  Also have two identical rotors.

    I am pretty sure that this won't work on A.C., but it stands a chance

on D.C..  Full wave bridge should help as well, which, at the moment

all of mine are.  (thinking of changing, with rect. @ Batts.)

    Hard to say, but might be an answer to getting the voltage up, going

to smaller wire, etc.

    Till then, thanks for the interest.

    bj

[bj]

   As promised, I tried two P.M's in series.  Readings were at first

double, as expected.  After about two minutes, lost about 20% voltage.

This was an open circuit test.  No load.  Investigation showed up a

blown diode.  These are stock G.M. diodes, and I have had several

failures before.  So, am not sure if the failure is due to series

hookup, or just crap parts.  Seems that the flaw in using these

things as a base is the parts available. (quality)

   Having said that, upon rebuild, I will post again.

   Thanks for your interest.

   bj