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Ammeter Question


 
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B from Texas
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Joined: 29 Aug 2007
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PostPosted: Tue Mar 05, 2013 2:50 pm    Post subject: Ammeter Question Reply to specific post Reply with quote

I recently acquired a 1951 8N. The ammeter gauge is busted and I would like to replace it. The current gauge is a 60-0-60. I have seen others for 8N that are 20-0-20 and 30-0-30.

The tractor is 6 volt. Which one do I or should I use?
 
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old
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Location: Lake of the Ozarks area of MO

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PostPosted: Tue Mar 05, 2013 3:07 pm    Post subject: Re: Ammeter Question Reply to specific post Reply with quote

If I remember right the factory gauge was a 30-0-30 gauge and not a wire type as in 2 post for wires but a shunt type gauge
 
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souNdguy
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PostPosted: Tue Mar 05, 2013 5:11 pm    Post subject: Re: Ammeter Question Reply to specific post Reply with quote

a 30-0-30 will give you an easier to read scale.. and if using a genny is all you need.

the 60-0-60 would WORK fine too.. just harder to get a precise reading due to scale size..

a 20-0-20 would LIKELY work, as you won't normally see charges over 20a for very long at all... the shunt in the meter should be fine for low duty cycle excursions.. etc..
 
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Dell (WA)
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PostPosted: Tue Mar 05, 2013 5:24 pm    Post subject: Re: Ammeter Question Reply to specific post Reply with quote

Tex........the original N-ammeter was a "loop" feedthru (just stick the wire thru the loop) Modern replacement ammeters are 2-terminal and you must "cut" yer power wire to fit on the terminals. tip: iff'n the meter reads backwards, just exchange the 2-wires. Simple, eh?

Surprizingly enuff, ammeters don't care 6-or-12V, and really don't care positive (+) or negative (-) ground. But you care. Just as long as the meter needle show charge (+) when engine is running.

Don't sweat the ammeter full-scale reading, yer 6-volt genny ain't never gonna output 20-amps. (some 12V alternator can pump 135-amps, whoo-whoo) .......Dell, a 12v advocate for the right reasons
 
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Indiana Ken
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PostPosted: Tue Mar 05, 2013 6:12 pm    Post subject: Re: Ammeter Question Reply to specific post Reply with quote


I bought a 30-0-30 for mine. I can't say it has ever been over + 10 so the 20-0-20 would probably work.
 
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B from Texas
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PostPosted: Tue Mar 05, 2013 9:46 pm    Post subject: Re: Ammeter Question Reply to specific post Reply with quote

Thanks for all the info. I couldn't see the need for the 60-0-60.
 
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