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Old 06-28-2019, 08:52 PM   #4
ChuckW
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Join Date: Jun 2019
Location: Nashville, TN
Posts: 35
Default Re: Power and torque upgrade guidance

Thanks Johnny B

What is the cart's top speed on level pavement? - GPS Measured 15 mph with one person and 13 mph with two people

What does it slow to on hills? GPS measured 9 mph with one person, 7 mph with two

What is the measured tire height? 18 1/2"

What is the tire's max inflation pressure?
22 psi


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I suspect you have some battery issue and high current cable issues. Stock cables - see attached photo

What is the pack voltage? - 37.8v 24 hours after last charge

what does the pack voltage drop to on hills? 32.1v one person on a 15% grade - 31.5v two people on same grade.

Beginning and ending pack voltage after running 30 min up and down some pretty steep hills in the neighborhood
37.8v - 36.8
Per battery
6.45 - 6.27
6.36 - 6.19
6.31 - 6.14
6.35 - 6.21
6.22 - 6.07
6.33 - 6.19

I noticed after running it I was smelling something burning so I took some temps. Do these temps seem reasonable? Again, I was running pretty continuously on some fairly steep hills. I also found a loose nut on the + post of the battery going to the controller, so I'm sure that didn't help any.
Motor - 140 degrees
Speed control and cables to batteries - 123 degrees
Battery posts 95 to 107 degrees
Attached Images
File Type: jpg 20190628_182729.jpg (214.3 KB, 0 views)
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