lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car
Electric Club Car Electric DS, and Precedent golf cars



Post New Thread  Reply
Thread Tools Display Modes
Unread 07-12-2016, 05:10 PM   #1
Not Yet Wild
Club Car
 
Join Date: May 2016
Location: Atlanta, GA
Posts: 50
Default 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.
flyons78 is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Unread 07-12-2016, 07:39 PM   #2
Gone Wild
 
theboss20's Avatar
Club Car
 
Join Date: Jun 2014
Location: Buckeye, Az
Posts: 546
Smile 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.
theboss20 is offline   Reply With Quote
Unread 07-12-2016, 08:02 PM   #3
Vacationing 12/23 -1/8
 
scottyb's Avatar
E-Z-GO
 
Join Date: Dec 2007
Location: Southern California
Posts: 60,466
Default Re: Alltrax XCT: Understanding Max Motoring Amps

Quote:
Originally Posted by theboss20 View Post
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.
Wait... uhm, he said under load on some hills. And we don't even know how charged up before he hit the hill. I hate to say it - I know you're trying to help & maybe you misread? But 43-44 under load (alone) is not a bad battery even if they are aged.

I think you asked me for a new map this AM? Are these readings with the new v5 map installed?
scottyb is online now   Reply With Quote
Unread 07-12-2016, 08:46 PM   #4
Gone Wild
Yamaha
 
Join Date: May 2012
Location: Rio Verde, Az
Posts: 2,582
Default 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.
Volt_Ampere is offline   Reply With Quote
Unread 07-12-2016, 09:12 PM   #5
Gone Wild
 
jjance's Avatar
Club Car
 
Join Date: Feb 2011
Location: Chattanooga TN
Posts: 2,105
Default 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.
jjance is offline   Reply With Quote
Unread 07-13-2016, 07:51 AM   #6
Not Yet Wild
Club Car
 
Join Date: May 2016
Location: Atlanta, GA
Posts: 50
Default Re: Alltrax XCT: Understanding Max Motoring Amps

Quote:
Originally Posted by scottyb View Post
Wait... uhm, he said under load on some hills. And we don't even know how charged up before he hit the hill. I hate to say it - I know you're trying to help & maybe you misread? But 43-44 under load (alone) is not a bad battery even if they are aged.

I think you asked me for a new map this AM? Are these readings with the new v5 map installed?
Yes, that was me. This is after the v5 map was installed. I'm not seeing whole lot of speed and torque improvement with the 7144 vs the stock AMD motor. However, other than load the field map, I haven't tweaked any of the settings on the controller. So my Alltrax basically has the stock IQ motor settings you programmed.

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.
flyons78 is offline   Reply With Quote
Unread 07-13-2016, 07:54 AM   #7
Not Yet Wild
Club Car
 
Join Date: May 2016
Location: Atlanta, GA
Posts: 50
Default Re: Alltrax XCT: Understanding Max Motoring Amps

Quote:
Originally Posted by jjance View Post
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.
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.
flyons78 is offline   Reply With Quote
Unread 07-13-2016, 08:02 AM   #8
Not Yet Wild
Club Car
 
Join Date: May 2016
Location: Atlanta, GA
Posts: 50
Default Re: Alltrax XCT: Understanding Max Motoring Amps

Quote:
Originally Posted by Volt_Ampere View Post
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.
The reason I ask about these is because a few weeks back when I was talking Robby at PQ, he mentioned that the speed decrease uphill is related to how much the voltage drops as I climb. So my logic was if I could feed the controller and motor more current, then it might improve the speed uphill.

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.
flyons78 is offline   Reply With Quote
Unread 07-13-2016, 10:06 AM   #9
Gone Wild
 
Muddog's Avatar
Club Car
 
Join Date: Jun 2015
Location: Carolina Lowcountry
Posts: 247
Default Re: Alltrax XCT: Understanding Max Motoring Amps

Fully charged, after rest,48 volt battery pack voltage should be 50.93 volts.
Muddog is offline   Reply With Quote
Unread 07-13-2016, 10:17 AM   #10
Gone Wild
Club Car
 
Join Date: Sep 2012
Location: Alberta - Canada
Posts: 903
Default 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.
joesam is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Electric Club Car


Thread Tools
Display Modes


Similar Threads
Thread Forum
Alltrax (inconsistant Amps) Need an opinion Electric Club Car
Understanding Regen Electric Club Car
Alltrax vs FSIP (GE) both 700 amps Extreme DC!
Winch Amps and Voltage Reducer? How many amps can I draw? Electric EZGO
Resistor amps vs stock controller amps Electric Club Car


All times are GMT -5. The time now is 11:22 PM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.