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Electric Club Car Electric DS, and Precedent golf cars



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Unread 07-20-2016, 07:54 PM   #1
Not Yet Wild
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Join Date: Apr 2015
Location: Ocracoke island
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Default DS acceleration

2002 CC DS Series model. New batteries, tires and brakes. Bandit motor upgrade.
The cart is still relatively slow, 16 mph. I've been told to check the MCOR and I'm a little confused about where to take the readings.
If I measure from the purple wire, key on, to negative post on a battery I'm getting 42 volts which to my understanding is low.
Am I doing this correctly ?
Also, I put a jumper in the female 2 wire plug and there was no difference.
When I accelerate using only a small amount of throttle the cart shudders a little and I have to depress the throttle almost halfway before I get any response.
Any guidance would be appreciated.
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Unread 07-21-2016, 08:35 AM   #2
Dawg Gone Wild
 
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Default Re: DS acceleration

Locate your motor controller in the back of the cart. You'll see three small blade terminals plugged into the controller. Red, Green, and Yellow. Un-plug the green and yellow ones. Turn the key on and put the shifter in forward. With a multimeter set to 20k ohms, insert the leads of the multimeter into the ends of the wires you unplugged from the controller. This is how you measure the resistance (throttle signal) from the mcor back to the controller. At zero throttle you should see around 6800 ohms. At full throttle you should see around 1100 ohms. It should be a smooth transition throughout the range of the pedal. If you see the numbers jump around and fluctuate, or if you don't see the range I described, either the MCOR is bad or the pedal linkage under the cart is worn out. Typically, pedal linkage is easy to repair. If you don't see full throttle resistance, take the mcor off and remove the drive bar. Take a small piece of rubber fuel line (1/4") and put it over the forward most part of the fork of the drive bar and re-install it on the pedal. This will take the slop out of the throttle. Measure again and see if you can reach wide open throttle (1100 ohms). If you see an issue, order part number AM293101 MCOR4 conversion kit.
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Unread 07-21-2016, 12:09 PM   #3
Not Yet Wild
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Join Date: Apr 2015
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Default Re: DS acceleration

Thanks for the response. I'll check this tonight after work.
On a different note, I got a speed magnet from you last year for my other cart and it is the bomb !




Quote:
Originally Posted by TahoeDawgZ71 View Post
Locate your motor controller in the back of the cart. You'll see three small blade terminals plugged into the controller. Red, Green, and Yellow. Un-plug the green and yellow ones. Turn the key on and put the shifter in forward. With a multimeter set to 20k ohms, insert the leads of the multimeter into the ends of the wires you unplugged from the controller. This is how you measure the resistance (throttle signal) from the mcor back to the controller. At zero throttle you should see around 6800 ohms. At full throttle you should see around 1100 ohms. It should be a smooth transition throughout the range of the pedal. If you see the numbers jump around and fluctuate, or if you don't see the range I described, either the MCOR is bad or the pedal linkage under the cart is worn out. Typically, pedal linkage is easy to repair. If you don't see full throttle resistance, take the mcor off and remove the drive bar. Take a small piece of rubber fuel line (1/4") and put it over the forward most part of the fork of the drive bar and re-install it on the pedal. This will take the slop out of the throttle. Measure again and see if you can reach wide open throttle (1100 ohms). If you see an issue, order part number AM293101 MCOR4 conversion kit.
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Unread 07-21-2016, 05:58 PM   #4
Not Yet Wild
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Join Date: Apr 2015
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Default Re: DS acceleration

Did the resistance test. At no pedal I had zero ohms. but after depressing the pedal slightly, 1" +/-, I got 6500. At full pedal I got 1140. I only have a digital meter so was hard to tell if it was smooth.
I'm assuming these numbers are within an acceptable range ?
Also, the dead pedal number is probably due to wear ?
Think I'll try fuel line fix but doesn't fix my issue which is slow speed ?
16 mph
Thanks
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Unread 07-21-2016, 06:59 PM   #5
Dawg Gone Wild
 
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Default Re: DS acceleration

Your numbers sound good. 16mph sounds about right to me for a Bandit on a series car. I installed one on a DS series car and got about the same results.
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