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Author Topic: Easy Alternator Conversion  (Read 43520 times)
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John Schwiebert
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« Reply #15 on: December 21, 2008, 08:08:58 PM »

12 volts is easier on the starter than 6 volts. That is why smaller cables are used on 12 volt systems. Make sure all your connections are good. Do you run lights? If not put a 12 volt battery and a small cheap 12 volt charger. Charge the battery when the tractor is parked. Since it has a mag it  will take no electricity when it is running. Confused?
« Last Edit: December 31, 1969, 07:00:00 PM by John Schwiebert » Logged

John Schwiebert
hotratz
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« Reply #16 on: December 23, 2008, 01:28:40 AM »

The 6 volt starter is fine with a 12 volt battery. I've run them that way in my VW beetles for years, also my 56 Diamond T and now my OC-46. They turn over much faster and although the starting current is a little higher the engine will start quicker thus reducing starter wear. I've never burnt up a starter yet.

If you're having trouble starting in the cold weather try heating up the carb with a heat gun or hair dryer for about 3 mins. I've used this method on a couple of my machines and it works great.
« Last Edit: December 31, 1969, 07:00:00 PM by hotratz » Logged

chrisvdv
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« Reply #17 on: December 30, 2008, 05:19:37 PM »

Thanks you guys! Will hook up a 12v battery New Year's Day.

I tried to order the alternator set-up. I have not been able to get hold of your supplier. I hope they have not gone the way of so many northern automotive suppliers.
« Last Edit: December 31, 1969, 07:00:00 PM by chrisvdv » Logged
hotratz
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« Reply #18 on: February 01, 2009, 08:43:18 PM »

A little more progress. Here's a video capturing the operation of the charging system with the alternator in use. The alternator charges immediately at idle speed even before the oil pressure makes minimum psi. Looks like I might have to put a resistor across the ammeter terminals to dampen that initial needle movement. I think that gauge was made to respond to the kind of current a sluggish 6 volt generator puts out. Boy did I wake it up. It settled down pretty quick though. All in all I'm very pleased with the initial check-out

Alternator Video
« Last Edit: April 07, 2017, 03:20:48 PM by hotratz » Logged

Blake Malkamaki
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« Reply #19 on: February 01, 2009, 09:06:38 PM »

Nice video. Boy, that thing does start charging fast. The alternator I put on my Farmall Super M needs to have the engine revved way up to excite, then it charges thereafter.

What did you use to take the video? Cell phone? Flip video? Turned out good.

Blake
« Last Edit: December 31, 1969, 07:00:00 PM by Blake » Logged

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hotratz
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« Reply #20 on: February 01, 2009, 10:19:52 PM »

The vid was taken with my digital camera. I think You Tube compresses the file because it isn't all that grainy when I play it from my hard drive.

These alternators were designed for diesel gen-sets that have a 1800 rpm max running speed so they are wound to output at a lower RPM than an automotive unit that's expected to see much higher engine speed.

A friend of mine has a Delco one wire on his old international too and says the warning light comes on when it idles.
« Last Edit: December 31, 1969, 07:00:00 PM by hotratz » Logged

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« Reply #21 on: September 20, 2012, 03:45:37 PM »

I just realized the whole purpose of choosing this Nippondenso alternator was so I could cleanly fit it without hacking my side covers up to fit a Delco. Totally forgot to post some pictures to show how well it fit with the tin in place  Roll Eyes






« Last Edit: September 20, 2012, 07:59:00 PM by hotratz » Logged

Demaris
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« Reply #22 on: April 30, 2016, 08:30:59 AM »

Huge thanks. This is great. I will do this later in 2009. At the same time, what do you think of this starter set-up. Would you agree that the original starter is not up to the job? I am a new OC-3 with Ware 3-WI owner.

http://www.autoelec.com/html/oliver_cle ... educt.html

I am having trouble starting it in this cold weather. I tried a 12volt jump-start. I won't do that again, although it worked! And two 6v batteries won't do it either. Frustrating when you have 4 feet of snow to clear!

Did you unhook the 6 volt battery before jumping with 12 volt?  I've jumped my HG with 12 volts for years in the winter and it has always worked great.  Even when below zero F it spins very fast.  I rebuilt the 6 volt generator in my machine 20 years ago and since it works fine, I hate to replace it with an alternator.  Since my HG usually only gets used in the summer, it is usually NOT an issue.  But when I DO have to use it in the cold - I unhook the 6 volt battery and unhook the generator and then stick a 12 volt battery in it.  I am debating now what to do. I just bought some new remote property in the Michigan UP and am going to take my HG up there and leave it there - maybe forever.  There is no electricity other then some solar I will be putting in.  So now I am debating putting a new 6 volt battery in my HG, or converting to 12 volt with an alternator. I've got piles of small alternators that will fit right in (from Geo Trackers). Nice thing about 12 volt is I've always got a few extra 12 volt batteries around. Not the case anymore with 6 volt. But as I said, the original 6 volt generator works fine.  Just a situation of poor cold starting which may not be an issue anymore. I also suspect I could improve it with an new push-button starter switch.  The one on it now was for a 12 volt system and gets hot when used with 6 volts, so I know there is a substantial voltage-drop across it.
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sedanpilot
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« Reply #23 on: July 19, 2018, 09:14:03 AM »

Thanx Hotratz!...  I just bought a 1957 OC-4 and wanted to run a small 12V winch on the back, this conversion did the trick...  I didn't change the drive pulley, used the one that came with the alternator (but used the belt you recommended), added another toggle switch for alternator excitement...  Would have been an extremely simple conversion except for having to pull the hydraulic pump to change the belt...  Pump had rigid pipe fittings and I didn't want to R&R the radiator, so I cut the pipe nipples with a hacksaw to remove the pump...  Once I pulled the pump I decided that I didn't need hydraulics, so I pulled the whole system off the crawler...  If I ever find a 3 point setup I can buy, I'll reinstall the hydraulics...  I would have spent hours/days trying to reinvent the wheel if I hadn't had your instructions...  Thanx again, David
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1957 OC-4 "Ollie"...  S/N 2TG072...  "Takes a lickin' and keeps on tickin'"...
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