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Unread 03-17-2009, 08:05 PM   #11
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Default re: How Many Amps

They will put out about 500 amps. Yes, the 700 amp controllers are overkill, but they provide a margain of safety if you have a 11-14 HP motor installed. Most of the inrush is controlled so a spike will not be observed. I have tested a 14 hp motor with a 700 amp controller and for about 50 milliseconds, the amperage is above 560. .010 second later, it has fallen to below 500 amps. Wiring was 2-AWG. Motor was connected to a dead load dyno like they use to test outboard engines. Setup was a tektronix scope measuring across a .01 ohm nickel-chrome shunt.
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Unread 03-17-2009, 08:13 PM   #12
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Default re: How Many Amps

go to trajan battery company online and they have a conversion chart, but cold crank amps for 6 volt is around 75
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Unread 03-17-2009, 08:14 PM   #13
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Default re: How Many Amps

Higher amp controllers carry higher amperage for a longer period of time
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Unread 03-17-2009, 11:21 PM   #14
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Default Re: How Many Amps

Quote:
Originally Posted by willie View Post
Higher amp controllers carry higher amperage for a longer period of time
I can see were that would come into play. Great point havent thought about that.
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Unread 03-18-2009, 10:28 AM   #15
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Default Re: How Many Amps

Although it is only 50 amps between the 500 and 650 amp alltrax on the 5 min rating and none on the 1 hour rating. Thats not very much.

http://www.alltraxinc.com/Products_AXE.html
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Unread 03-18-2009, 08:52 PM   #16
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Default Re: How Many Amps

K, I recently got an axe 4865. Haven't had a chance to install it yet but can't wait. The 500a seems to be the perfect controller but i will primarily use mine off-road i got the 650 because I figure under pulling conditions the 650 would handle it better and possibly run cooler.
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Unread 03-19-2009, 06:14 AM   #17
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Default Re: How Many Amps

I think the only time you are gonna need to go any bigger than 500 amps is when you are running 8, 6 volt batteries. Adding batteries is where you will get bigger amps from.
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Unread 03-19-2009, 08:45 AM   #18
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Default Re: How Many Amps

[QUOTE=gornoman;161303]Enough to vaporize a chunk of a 1/2" box wrench when dropped across the terminals.QUOTE]

How'd you know I did that I don't recall posting it on here.
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Unread 03-19-2009, 10:18 AM   #19
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Default Re: How Many Amps

[quote=Jim C;162451]
Quote:
Originally Posted by gornoman View Post
Enough to vaporize a chunk of a 1/2" box wrench when dropped across the terminals.QUOTE]

How'd you know I did that I don't recall posting it on here.
EVERY sparky owner does this. ONCE!

That's how we (I) learn the dynamics of the portable welder under our butts!

The pillar of smoke was quite surprising too.
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