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Re: opinions on 8V batteries for 6v tractor
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Posted by jdemaris on January 02, 2004 at 18:41:59 from (209.23.30.160):
In Reply to: opinions on 8V batteries for 6v tractor posted by Lynn Kasdorf on January 02, 2004 at 16:57:11:
All things being equal, and 8 volt battery will crank better than a 6 volt. No matter how well your six volt system is setup, your going to have a cranking voltage of around 4.5 volts. An 8 volt system will crank around 6 volts. In the long run, though, I'm not sure it's worth the bother and expense. If you kept the system at 6 volt, but installed an oversize 6 volt battery, that alone could increase your cranking voltage up to 5 or 5.5 volts - and that's close to what you'd get with the 8. When I worked as a John Deere mechanic, we used a lot of 8 volt batteries, but that was 20-30 years ago. Then, they were more common, and no more expensive than any other battery. Now, they're an oddity, and priced high. Also, years ago, most professional battery chargers had an 8 volt charge mode. I don't see new ones like that anymore. On top of all that, you've got to turn up your voltage regulator so it will charge the battery on the tractor.
In my opinion, if the tractor is a toy or show machine, I'd leave it at 6 volts. If it's a machine that, on occasion, you have to get started when it's thirty below zero F., then change it over to twelve volt - or install a block heater. I've still got a couple of tractors that are six volt and are daily users (My Case VAC and Cletrac HG). At 20 to 30 below, it's a crap shoot if they'll start - and believe me, they are well maintained and set up properly. I cheat, though, and have block heaters on them. Plug them in for half an hour, and they'll start at any temp.
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