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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-18-2019, 08:31 PM | #1 |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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2007 pds shuttering
I have checked batts. with hydrometer, all ready good 1275. The solenoid clicks, motor turns fine. It will shutter some then run slow. I did see voltage drop 50 to 46 using an exray volt, and one time to 43. Any ideas would be appreciated.
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03-19-2019, 10:33 AM | #2 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 2007 pds shuttering
Is the 1.275 SG temperature corrected?
What make/model batteries? What make/model controller? |
03-19-2019, 08:53 PM | #3 |
Gone Wild
Join Date: Dec 2011
Location: Jacksonville Beach, FL
Posts: 606
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Re: 2007 pds shuttering
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03-20-2019, 05:38 PM | #4 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 2007 pds shuttering
1. In a 48V - 170AH battery pack, the batteries in and of themselves will drop 1.5V/100A of current draw, or 7.5V when 500A controller is at maximum throughput. The copper conductors in 4Ga cable set will drop about 0.5V.100A or 2,5V at 500A, so you have the potential of dropping the back voltage by at least 10V while the motor is spinning slow enough to draw 500A.
2. Does the cart have a 500A Curtis 1268 or is it a 300A Curtis 1206MX that has be modified to pass 500A at 48V? 3. D&D has at least 4 models of off the self SepEx motors for EZGO carts, plus many model in the ES (Engineering Special) family. Most, if not all of the are capable of drawing 500A plus at low RPM. ------------- The controller might be going into a low voltage or or over current or over temperature mode, but have no idea why it is shuddering. |
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