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07-12-2016, 04:10 PM | #1 |
Getting Wild
Join Date: May 2016
Location: Atlanta, GA
Posts: 129
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Alltrax XCT: Understanding Max Motoring Amps
Hey Gang... I was reading through the Alltrax configuration manual and trying to understand the Max Motoring Armature Amps and Max Battery Armature Amps. Tuning these two fields seem very important for me and my driving terrain but I'm not entirely sure what they do. Would allowing the controller to draw more amps from the battery pack help keep my speed uphill? Do I need to use caution when adjusting these? I am terrified of overclocking my AMD 7144 motor and frying it, but I don't feel like I'm getting the speed uphill that I should be getting. Also, I run a voltmeter right off the battery pack, it seems to drop to around 43-44 under load, up some of these hills. I'm assuming my battery pack is good. They're from 2013.
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07-12-2016, 06:39 PM | #2 |
Gone Wild
Join Date: Jun 2014
Location: Green Valley, Az
Posts: 678
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Re: Alltrax XCT: Understanding Max Motoring Amps
Your batteries are bad....50% would be 48.41 volts so you are below 50% of the normal voltage under load...time for new ones.
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07-12-2016, 07:02 PM | #3 | |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: Alltrax XCT: Understanding Max Motoring Amps
Quote:
I think you asked me for a new map this AM? Are these readings with the new v5 map installed? |
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07-12-2016, 07:46 PM | #4 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,120
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Re: Alltrax XCT: Understanding Max Motoring Amps
Batteries may be fine. Don't believe everything folks say here! There is a difference between armature and battery amps but you can't adjust between them. You can only set different limits. Under full power, they are the same. Under partial power, Armature amps is generally higher than battery amps because of the way the controller chops the current. Armature amps == motor heat.
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07-12-2016, 08:12 PM | #5 |
Gone Wild
Join Date: Feb 2011
Location: Chattanooga TN
Posts: 2,105
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Re: Alltrax XCT: Understanding Max Motoring Amps
Just out of curiosity what kind of uphill speed do you get? I get 22-23 and I've seen my volts drop to 43. My batteries are one year old.
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07-13-2016, 06:51 AM | #6 | |
Getting Wild
Join Date: May 2016
Location: Atlanta, GA
Posts: 129
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Re: Alltrax XCT: Understanding Max Motoring Amps
Quote:
About my batteries, on a full charge right after pulling the plug they sit right around 49.8v. Under load on flat ground and with a full charge, they see about 46-47v. 43v is on one of the steeper hills and it will sit at 43 until it starts to level out. |
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07-13-2016, 06:54 AM | #7 |
Getting Wild
Join Date: May 2016
Location: Atlanta, GA
Posts: 129
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Re: Alltrax XCT: Understanding Max Motoring Amps
I'm lucky if I get 23 on flat ground. I do a solid 21 on flat ground (according to the Waze speedometer). Uphill, and depending on how steep the hill is, I'd say I do around 15mph with just myself in the cart. Also, not sure if it matters, but I have stock tires on the cart. However, this will soon change to 22" tires because I blew out a tire yesterday.
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07-13-2016, 07:02 AM | #8 | |
Getting Wild
Join Date: May 2016
Location: Atlanta, GA
Posts: 129
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Re: Alltrax XCT: Understanding Max Motoring Amps
Quote:
I'm just not too confident I have the best settings configured in my Alltrax. I'm not seeing a huge difference between my stock AMD motor and the 7144, especially after reading everyone else's results with the same or similar cart configuration. Aside from settings in the Alltrax, my battery pack seems like it could be the only other explanation. |
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07-13-2016, 09:06 AM | #9 |
Crazy Wild
Join Date: Jun 2015
Location: Carolina Lowcountry
Posts: 796
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Re: Alltrax XCT: Understanding Max Motoring Amps
Fully charged, after rest,48 volt battery pack voltage should be 50.93 volts.
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07-13-2016, 09:17 AM | #10 |
Gone Wild
Join Date: Sep 2012
Location: Chestermere, Alberta - Canada
Posts: 1,146
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Re: Alltrax XCT: Understanding Max Motoring Amps
I guess it wouldn't hurt to put a voltmeter on each battery one-at-a-time and climb that same hill with each one. That will tell you if one of them is super-weak and is leaving the rest of the pack to pull-the-load. You said 49.8 when you just pull the plug (I assume the charger is off and has been for a while at that point - not just immediately when the charger clicks off....right)? Fresh/healthy packs do show well above 50 with the pack at rest.
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