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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

Super 88 24V?

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Nathan in MN

09-06-2004 18:51:19

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I am wondering if it is possible to connect two 12 volt batteries in series on a 1955 Super 88 Diesel for 24 volts of starting power. I would also use a series/parallel switch to change it back to parallel after it was running so that the batteries could be charged. Is this safe, or would I damage something, i.e., starter, etc?

Thanks in advance,
Nathan in MN

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edchainsaw

09-14-2004 20:11:37

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

As a former Electrical Engineering student --(ended up a computer guy)
and a JD owner with the screwy 24v set ups. I can tell you DONT DO IT... go with 12v in parralel [sic]

There is a large movement in JD circles to replace 24v with 12v and reductions. 1. it dont make such a big arc of fire when you get a cable to close to ground.
2. the stuff is cheaper to fix when it goes bad.
3. its easier to trouble shoot
4. Recharging batteries dont require a 24v charger or charging 1 battery at a time.

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J.Schwiebert

09-07-2004 07:09:33

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

You must be younger and do not remember when cars changed from 6 to 12 volt. 24 volts will be a little easier on the starter. Have you though of a 24 volt alternator and lights. I also wonder if your Super still has the original head with the lower compression larger port exhaust valves.

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Nathan in MN

09-07-2004 14:27:41

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Re: Super 88 24V? in reply to J.Schwiebert, 09-07-2004 07:09:33

Well, you"re partially right, I am younger than that (I"m 16), however, I do know that a change was made from 6 to 12 volts, and that lots of people run 6 volt starters on 12.

What I don"t understand about your post is when you said 24 volts would be EASIER on the starter. Wouldn"t it be like a 6 volt starter on 12 where you can do it but don"t run the starter too long? If you can explain this, I would be very appreciative.

Also, I would be willing to go to a 24 volt starter and lights, but where do I get these, and are they very expensive?

Thanks,
Nathan in MN

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J. Schwiebert

09-07-2004 19:22:40

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Re: Super 88 24V? in reply to Nathan in MN, 09-07-2004 14:27:41

O. K. I am not real sure where I want to start with this. But watts, the unit of electrical power is obtained by multiplying amps times volts. In your case you doubled the voltage so you in a sense cut the amperage or current flowing in the cables and through the starter in half. When I taught high school I had some new Prestolite stuff since I was across the river from Toledo and it was for Cat equipment and it was 24 volt. You are taxing my memory now but I think the 5010 John Deere was 24 volt start 24 volt charge not the goofy set up like on the 30-4010 and early 20 series where you have 12 volt lights and 2 12 batteries each with a different polarity ground. Have you priced a series parallel switch lately? They are getting to be about like your super, Technoligy from another time. I still would like to know if you have the large chamber head. Got a Serial number or any more questions.

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Bobby C.

09-06-2004 20:54:34

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

Might be cheaper to just go with a good gear reduction starter like i have on my puller. It has 14-1 compression and starts on the first whirl. Save all those extra cables, parellel switch and another big battery.Plus ya gotta rip the sides and hood off to get at em unless your super is a late model with full battery box opening. Just a thought.

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Don-Wi

09-06-2004 20:25:21

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

I think it would be fine, others may disagree. When 2 12 volt batteries are together, it's still only 12 volts(12.6 is the actual voltage). It's the AMPS that increase, ie... 2-12 volt 650 CCA batteries connected in series makes 1300 CCA w/ 12 Volts. As long as he system is 12 volt, it shouldn't cause an problems.
Donova from Wisconsin

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TheRealRon

09-07-2004 03:23:23

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Re: Super 88 24V? in reply to Don-Wi, 09-06-2004 20:25:21

2 12v batteries in series = 24v with the amps x 1.

2 12v batteries in parallel = 12v with the amps x 2.

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L Klingler

09-06-2004 20:25:20

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

Been doing that for fifteen years. Have a super 88 diesel with a lot of compression. Couldn't whippet fast enough with 12 volt to start. But I don't have an altenator on it. I charge it with a battery charger,I use it for tractor pulling nothing else. I have never used the starter for long periods of time and have never had to get starter fixed,It really whippes it over. I better go knock on wood!

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RussR

09-08-2004 15:42:21

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Re: Super 88 24V? in reply to L Klingler, 09-06-2004 20:25:20

Mr. K is rite on: Run the two 12 volt batteries in parallel hook-up for a good kick on the starter ring. Starter ring may show more engagement wear versus number of starts. Do all your recharging efforts with a standby/independent charger. No blue ribbons for best design in the industry but your rig will be online fast and it will be relatively cheap to maintain the lineup. You can always make improvements to the design as time wears on.

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B A Star

09-06-2004 20:19:51

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Re: Super 88 24V? in reply to Nathan in MN, 09-06-2004 18:51:19

Super 77 & Super 88 tractors that were built for the Military had 24 volt electrical systems. There was a restored Super 77 that was built for the US Air Force at the recent HPOCA Summer show in Madison, SD.

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