Farm Equipment - Convert back to generator, but 12v

Print Page | Close Window

Convert back to generator, but 12v

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=38309
Printed Date: 01 Apr 2026 at 1:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Convert back to generator, but 12v

Posted By: BrianC
Subject: Convert back to generator, but 12v
Date Posted: 02 Oct 2011 at 11:04pm

Model C converted to 12v with alternator in the '80's.
I have the alternator's regulator in the toolbox.
The alternator bearings fell apart. I can replace it for
cheap. However, I always felt it didn't look right, sort
of had remorse about doing it. I have advice from friend
to get replacement alternator for $50 and this time paint
it orange, then it would look right. He also said what's
next, a quest to find stinky leaded gas? Some people
just don't understand.

Can anyone suggest a 12v generator and alternator
combination?

Replies:

Posted By: Coke-in-MN
Date Posted: 03 Oct 2011 at 12:25am

You should be able to find a 10SI Delco alternator for around $10 now or go to the later style which are smaller and higher output. Or look for a generator off 1955 to 1964 GM car or pick-up to find a 12V generator.

the 10SI is internally reguated so easy to wire with just one wire and sensing wire from hot lead to one spade on alt. regulator terminals

-------------
Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.

Posted By: Glockhead SWMI
Date Posted: 03 Oct 2011 at 8:12am

lafontaine generator Exchange can rewind a stock gennie for 12 volts.

Posted By: GregLawlerMinn
Date Posted: 03 Oct 2011 at 8:32am

Using an alternator from a junk auto would probably be the cheapest repair (the 10SI is a good one). These old Allis's don't use much electricity in most cases (most are rarely used at nite, don't have big radios/amps, don't have A/C/heaters/electric cooling fans, etc...and start rather quickly) and a hi ouput alternator is overkill.

I like using the generators from the old Chevys (the short style) when upgrading to 12V; looks original (and installs using the 6V gennie bracket and belt) and it will supply enough power to keep the battery fully charged. I also have the electrical shop run the gennie and balance the regulator to it. To retain the original look and to isolate from the weather, I mount the regulator inside the tool box.

-------------
What this country needs is more unemployed politicians-and lawyers.
Currently have: 1 D14 and a D15S2.
With new owners: 2Bs,9CAs,1WD,2 D12s,5D14s,3D15S2s, 2D17SIVs,D17D,1D19D;1 Unstyled WC

Posted By: Brian G. NY
Date Posted: 03 Oct 2011 at 8:45am

How about a D-17 Generator? I have no idea how much they get for them at the scrap yards but it should look pretty original?

Posted By: Bud(WI)
Date Posted: 03 Oct 2011 at 8:26pm

Late D-14's & D-15's were 12v positive ground and had the same engine family.

Posted By: Chalmersbob
Date Posted: 03 Oct 2011 at 8:36pm

D-17 genny is too long. I bought one for my D15, but it wouldn't fit in front of the carb.

Bob