Went scrounging; while out and about came upon an IBM mainframe UPS 800 Watt out,
setup for 48 volt in. Batteries were in place, 7AH SLA'S, all 4 of them were flat
2 read 6ish volts 2 read 0. rigged a set of connecters to hook them to the little
electric string weedwacker....same battery there, and one by one they came back,
all 4 bats are now holding at 12.3 v for 4 days now.
The UPS itself looks very interesting.
Tag reads:
Input 100-125/200-240 volts
- /8/4 Amps
- -60 hz 1 ph
Output 100/120-127/ 200-240 50-60 hz 1ph 800w
Looks like its got a bunch of options.
still trying to get the book for it. Where would I look for a MODEL # ?
Hopefully it will end up powering my computer and monitor.
Next find WAS SUPER:
3 EXIDE FS12D batteries; history, 2.5 years old out of a floor scruber, owner said
they were getting slow. 360Min. @ 25A
They all read 12.1 v by my meter when I got them home.
The next one was a TROJAN J185P one out of 4 that still read 12v, other 3 had shorted
cells reading 8v or less, so i left them, the one good one is on the charger/desulfator
now and comming along nicely ie. the SG is starting to come up after a day and a half.
The TROJAN is 375 Min @ 25A BTW.
If they all come good i will have to knit myself a new stator for 48 volts.
UPDATE ON THE 8.5 FT mill.
Starts to furl @ 29 MPH
Full furl at 34 MPH
Peak wind that day.....59.6 MPH by my Anemometer
Was manuel dumping load into a bunch of old car headlamps.
Startup is at 7 MPH
The hub I'm useing has its orginal seal and is 1/2 full of 30W motor oil.
Stator; 9 coil wired star with 1 # 16 and 2 #24, was hopeing for 40A, but ended up with
36A @ 14.2V
All said and done; close to predictions and its holding together.
Thanks to; Hugh piggot for his very informative books.
Ed Windstuffnow; shaped magnets and VERY INFORMATIVE WEB PAGES
ALSO the board and all of the members that have contributed, and a place to post.
Not to bad of an accomplisment for a 64 year old working by myself, had to pat myself
on the back didn't I?
The latest Project Is:
Duel Rotor 24 pole at 12" 10 ga plates 1/2 x1/8" grade 40 neos 96 per plate 20 OZ. of
magnet. 18 coils of 16 ga. @24' each Total copper 3.375 LBS. 6 coils in series .589 OHMS
per phase (by wire chart).
With everything in place starts charging at 90 rpm. Star conn. at about 500 RPM 14.5A
BTW I wired the stator with all starts and finishes coming out on # 10x 24 thd brass,
so I could play with wiring.
connected delta; cut in at 120 RPM, 18A at about 500 RPM. Not to bad for about 40 ish $.
Hope to run this one with a 6.5 FT 3 blade at TSR6......OR A VAWT don't know yet.
