Chuck_thehammer wrote:
Chuck_thehammer wrote:
CavemanCharlie wrote:
Chuck_thehammer wrote:
please reread my post.
I am a retired auto mechanic (43 years) I have personally rebuilt hundreds of alternators.
alternators need to spin at 3,500 rpm's not engine speed...
Go to an auto parts store and ask to see a rebuilt alternator.
it should have a tag. stating output, and turn on speed..
remember most alternators spin at 2 to 2 1/2 times engine speed.
so Idle is 800 rpm's x 2 = 1,600 rpm NOT fast to power..
so engine speed is 1,500 rpm x 2 = 3,000 maybe 50 percent output of alternator.
you do not have to believe me .. go look at rebuilt TAG.
and for the 7 pin trailer connector charging battery.. look at the size of wire for the 12 volts battery at plug... WAY to small to fast charge a trailer battery.
You rebuilt alternators?? Heck, ever since GM came up with the alternator that had the voltage regulator inside of it I didn't think anybody rebuilt them anymore. Just swapped them out and sent the old one back. If you have a modern 100 amp (or more) alternator wouldn't you be getting 50 amps out at idle then?
My first car had a 40 amp alternator at max output. A 60 amp was the heavy duty version back then. I had a buddy that had a older pickup that still had a 6 volt generator and battery on it.
Thank You,
I worked for a shop, we rebuilt alternators, starters, generators and carburetors in-house. till early 90's...
first alternator in the US.. was 1963 Chrysler/Dodge/Plymouth .
and I did rebuild many 6 volt generators and 12 volt generators. .. clean contacts and adjust old type voltage regulators... 6 & 12 volt.
and we (I) also rebuilt complete engines .. just sent out block for machine work.
they now call that "OLD SCHOOL"
as to the output..
my Dodge has a 135 amp... at idle it puts out 22 amps... at 800 rpm's.
I own the equipment to test this kind of stuff.
I would have considered that a fun job. I've pulled heads off to take in for valve jobs and changed out many alternators/ starters/ water pumps/ brake jobs and such for myself and friends but, nothing like you've done. Once computers on cars came in I slowly backed away. Used to be able to get the codes through the check engine light but, these days the testing equipment it too expensive for me and the few times I would use it. I have a friend that runs a small shop in his backyard and I just take everything to him these days. He has all the equipment needed for most jobs.
