JD: We converted all of out old IH's with the 2 Eh batteries over to one Group 31 with the studs on top with very good results as far as starting with only one battery. This is in Mi so not in only warm weather temperatures. 2 12's will give more amperage to only about 1-1/2 of the 2. 2 6volts will give the 12 volts needed but only about the amperage of the one battery so then it will depend on the size of the batteries used in both cases. 400CCA 6 volts will give about 400 CCA's with the 12 volts in the series position. 12volts with 400CCA will only give about 600 in parallel as it doesn't seem to quite make the double amperage in the parallel set up it is supposed to though in cold weather batteries as you know are only about half or less of rated ability depending on the temperature outside. We also converted my brothers 2940 over to one 12volt GP 31 and it has been starting fine till this last 6 months so now will have to pull starter and have a look inside. This was about 5or 7 years ago.
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Today's Featured Article - Gatherin of the Orange - by Rick Nikolich. In July of 1998 I was talking to fellow Allis Chalmers collector Mike Schilling about the annual "Gathering of The Orange" AC show coming up in August of 1999. He got this wild idea that we should get a convoy of AC tractors and drive them from Charlotte, Michigan 105 miles to LaGrange, Indiana.
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