How Many Amps

bonduranth · 03-17-2009, 07:05 PM

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.

ClubMan · 03-17-2009, 07:13 PM

go to trajan battery company online and they have a conversion chart, but cold crank amps for 6 volt is around 75

willie · 03-17-2009, 07:14 PM

Higher amp controllers carry higher amperage for a longer period of time

K-DAWG · 03-17-2009, 10:21 PM

Quote:

Originally Posted by willie

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.

K-DAWG · 03-18-2009, 09:28 AM

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

willie · 03-18-2009, 07:52 PM

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.

K-DAWG · 03-19-2009, 05:14 AM

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.

Jim C · 03-19-2009, 07:45 AM

[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.

gornoman · 03-19-2009, 09:18 AM

[quote=Jim C;162451]

Quote:

Originally Posted by gornoman

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.

03-17-2009, 07:05 PM	#11
bonduranth Gone Wild Join Date: Mar 2009 Location: Raleigh NC & Bracey VA Posts: 156	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.

03-17-2009, 07:13 PM	#12
ClubMan Not Yet Wild Join Date: Feb 2009 Location: Fairmount IN Where cool was born!! Posts: 27	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

03-17-2009, 07:14 PM	#13
willie Getting Wild Join Date: Oct 2008 Location: North Carolina Posts: 99	re: How Many Amps Higher amp controllers carry higher amperage for a longer period of time

03-18-2009, 09:28 AM	#15
K-DAWG Gone Wild Join Date: Mar 2009 Posts: 256	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
K-DAWG Gone Wild Join Date: Mar 2009 Posts: 256

03-18-2009, 07:52 PM	#16
willie Getting Wild Join Date: Oct 2008 Location: North Carolina Posts: 99	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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03-19-2009, 05:14 AM	#17
K-DAWG Gone Wild Join Date: Mar 2009 Posts: 256	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.
K-DAWG Gone Wild Join Date: Mar 2009 Posts: 256

03-19-2009, 07:45 AM	#18
Jim C Gone Wild Join Date: Oct 2008 Location: Wildwood, FL Posts: 742	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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