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-   -   generator to alternator query (http://squarebirds.org/vbulletin/showthread.php?t=6591)

Petrolhead 05-25-2009 08:03 PM

generator to alternator query
 
Hi ya guys and gals

Aftre procrastinating for months, I finally have to change my '62 to an alternator as the gennie spat the dummy on Sunday.

I've got a question: the generator's driven my a double belt, I imagine it's hard if not impossible to find an alternator with a double pulley, or adapt something, so would runnig just one belt be a problem with regards to slippage etc?

Cheers

Alistair

Richard D. Hord 05-25-2009 08:23 PM

When I changed my generator to alternator in Christine. Of course I only had one belt. The old pulley went right on alternator. I had to modify my brackets but it works like a champ. Everyone said that the company C.R.A.P has brackets, but I could never get in touch with them.

bird 60 05-25-2009 08:36 PM

Hi neighbour, when you you say she spat the dummy do you mean she's had the biscuit & she's not repairable.:confused: If she is repairable why not fix it, you'll be good for the next 7 years or so. That way you won't have to worry about looking for or fabricating to accomodate an Alternator.
Just a thought.

Chris....From the Land of OZ.

Petrolhead 05-25-2009 10:01 PM

Thanks Richard, i read your how-to and it's very helpful.

Hi Chris, yeah, I'm in two minds. When I got the car the generator wouldn't keep up with any electrical drain of more than headlights, and I had to put the battery on charge every few days.

I took the car into a sparky and he found that at some stage the generator must have bene dropped and the centre shaft/armature was bent, so the brushes/armature or whatever they have inside were not making good contact and wearing away.

They did a makeshift repair, telling me that it "may not last" and when it fails the entire generator would need replacing.

Plus, an alternator makes sense as I run two air bag comperssors, plus intend to put some decent sounds in it.

I guess logic dictates a change to an alternator.

YellowRose 05-26-2009 02:11 AM

generator to alternator query
 
Hi Alistair,

I changed from a generator to an alternator over a year ago, using the single pulley that was on the generator. I have not had problems with slippage, though at first I did. But that was due to the bracket not being set up right. Once that was fixed, I do not have the problem.

Speaking of mounting brackets, I do not know what is with C.R.A.P. They must not want any business. The only way you can get in contact with them is by sending them an email through their website. Which they do not answer..... They have no phone number on their website that I know of. I know that some of you have done business with them, and have bought mounting brackets for our 352's from them. If anyone has a phone number for them, please give it to me, because I wanna sic the Bulldog on 'em! They are losing business by not answering emails, and not having a phone number to call them on.

simplyconnected 05-26-2009 04:26 AM

Quote:

Originally Posted by Petrolhead (Post 32350)
...I've got a question: the generator's driven my a double belt, I imagine it's hard if not impossible to find an alternator with a double pulley, or adapt something, so would runnig just one belt be a problem with regards to slippage etc?...

Ford alternators use the same shaft as the old generators. If you already have a double-belt pulley on your old generator, it's an easy thing to take off and install on an alt.

I had an old Mustang alt (75-amp) with a serpentine pulley. My alternator guy charged me US$10 to install a V-belt pulley, then he gave the old one back.

Alternator rebuild shops here, have hundreds of pulleys on the shelf, and our scrap yards discard alternators daily, so they are inexpensive compared to hard-to-find 35-amp generators.

Petrolhead 05-26-2009 05:20 PM

thanks Ray and simply connected

Ray, I'll have a go making my own brackets, if it all turns to custard then I'll go the aftermarket route. thanks for the advice about CRAP.

Simply connected - thanks, never thought of taking the gennie in and dettig the pullies sorted - great idea. I've got the generator out and it's in my daily driver, going out to get a suitable alternator today.

ramos291 02-14-2015 12:25 PM

where can I find that DIY from Richard? I would like to convert my Gen to an Alt. I am not sure what one to get.

jopizz 02-14-2015 12:51 PM

Did you look in the Technical Resource Library. There are a number of articles related to the conversion. If your block has the hole already drilled for the alternator then it will be much easier. The stock brackets are fairly easy to find. A Ford 1G alternator requires an external voltage regulator. A 3G alternator does not. It really depends on how many amps you need and how much wiring you want to do.

John

simplyconnected 02-15-2015 04:17 AM

Quote:

Originally Posted by ramos291 (Post 90195)
where can I find that DIY from Richard? I would like to convert my Gen to an Alt. I am not sure what one to get.

As John said, it all depends on your electrical demand.
Are you planning on an electric fan? If so, get an alternator with at least 100-amp output because at idle speeds you need something that will sustain 25 amps so it doesn't drain your battery.

You see, it's not the total output that is important, it's idle speed output. Small alternators like the 75-amp that came in my '90 Mustang don't put out enough to run an electric fan when the car is just sitting. There is nothing worse than a dead battery when you need it most.

I think this conversion is one of the most needed in today's rush hour traffic. All classic cars overheat badly when left at idle speeds for extended times. Modern cars don't have that problem because of electric fans that only turn on when needed. - Dave


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