if I'm not mistaken, that's a Delco 10SI alternator, that in best
factory trim puts out 63A at 12V so that will be the limiting factor
(e.g. assuming that you did get a 63A version and everything is lossless
that's 6.3A at 120V or 756W - I realize that it's more like 14.5V but
we're hand waving here)
replace "roosters" with "cox" to reply.
Actually it would put out about 13.5 volts with the built-in regulator and
that could give as much as 850 watts if used as-is. I have used one to
produce up to 60 amps at about 51 volts which would be over 3000 watts. In
order to achieve that you really need about 6 HP. The definition of one HP
may be 746 watts but in the real world you get more like 500 watts per
horsepower, maybe a bit more.
I was going to post the link to "Alternator Secrets" but this is what I got
when I clicked on it:
This content was removed at the request of T. Lindsay / Lindsay Publications
So, to me that means Don't Buy Anything From Lindsay Publications!
Anyway, if someone wants to learn more about how to modify alternators for
higher voltages etc try searching for Alternator Secrets. Lotsa interesting
stuff and the author is "unknown." Hell, if anyone wants it I'll email it
to you. Let's see 'em delete it from my hard drive! This document is
supposedly public domain.
A couple of things covered in the document: how to produce 120 volts from a
washing machine motor, how to power such things as drills, saws, etc from a
I don't really know any more than I was told. The cop who gave it to
me said it was the ones they put on cop cars and we thought that was
100a. I know both inverters loaded up don't seem to drag the voltage
down. The 6.5 HP Honda isn't even breathing hard. I am thinking about
shaft coupling another alternator in there (that I have) and get
better inverters (look a little more at garage sales).
Heh! I once bought a used cop car, a piddly Ford Custom. It had a DELCO
alternator! Delco, as you know, is a division of General Motors! Evidently
Ford didn't have access to humongous alternators back then.
The car also had:
* A certified speedometer from 0 to 140mph
* Radio-interference suppressed wiring
* An 8-quart crankcase
* A monsterous radiator
* Extra heavy duty suspension
* Rubber floor mats
* Built-in semi-rollbar
* 440 cu in engine with 2-barrel carb
* other stuff
I was told it originally came with 8-ply nylon ultra-high-speed tires.
Anyway, sucker was built like a tank and, except for the 9 mpg fuel issue,
was the best car I ever owned.
No, I'm not. It was a 1969 model and my accurate memory only goes back to
1976. Besides, I never used more than about 220 cubic inches anyway. Except
for one time I was chasing, using red lights and siren, a car with four
naked women who were pelting me with beer cans.
I used all the inches I had.
Lots more issues than that. The output is both three phase and a higher
frequency. Plus you also would need to remove the internal regulator
then the output voltage would be a function of the load and field
then you have to worry about output frequency,dependent on RPMs of the
Using an inverter allows the inverter to maintain frequency.
Plus most auto alternators are multi-phase output,the diodes combine them
to give a pulsing DC.
There are several plans for these on the tubes, all involving an old
lawnmower, a chevy alternator, a modest battery, and an inverter.
This would make an interesting week-end project if you already had a couple
of the items.
Ive built a couple of these, one for 48 volts, the 48volts powered a
1500 watt UPS. I was surprised at what I could power with the thing,
just about my whole house except for the HVAC. If I could get 240 out
and do some load sharing I might could power that too.
That is a 500w inverter, there is another one you can't see on the
other side. I can run several fans, my PC a TV and a CFL light or two.
I have a propane fridge so that is plenty for me.
I would like to find a cheap 1000w or 1500w inverter in a garage sale.
This is a 100a alternator so it will do the deed. The on board battery
is just for regulation purposes. I use my golf cart batteries if I am
really doing something with it.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.