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Unread 07-21-2014, 01:44 PM   #1
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Default MCOR Issues?

Okay so I've installed new Crown CH-165 Crown batteries as my cart had 3 that done gone bad. I've also installed a PQ Executioner motor as well as a set of 2 gauge cables. And while the cart rolls very freely I'm still not overly trilled with the speed 20 to 22 at best on the flat and 24 to 26 going down hill...

My question is can a faulty/worn MCOR have any affect on top speed? I ask this as I've got some jerky and retarded operation when first starting out. I do have a replacement on the way.

Where do I go next for more hill climbing torque and a little more speed? I'm guessing an HD Solenoid and high amp controller are in order? Who best to get these from and part numbers would be most appreciated?

BTW my cart is an 2011 Excel model...
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Unread 07-21-2014, 02:40 PM   #2
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Default Re: MCOR Issues?

I question the condition of the other three batteries that haven't yet failed.
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Unread 07-21-2014, 02:47 PM   #3
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Default Re: MCOR Issues?

TahoeDawg----he said this in an earlier thread:

"Turns out that least 3 of the battery were shot in that they will self discharge within a few days to less than 5 volts and the other 3 are barely holding their head above 8.3 volts. So they have all been replaced with a new set of Crown 165 batteries. It's great seeing 100 % charge and better on the voltage meter as the old battery only held at best 50 volts.

Installed new PQ Executioner motor but have not had much time to test but did pull 24 MPH in our hilly hood.

Will do a set of 2 gauge cables soon too.

Now I do have an odd issue of when you press the go pedal the cart will sometimes go just fine but sometimes it will retard and slow and/or stop, if you let off and try again it may or may not do the same a few times more. What gives?"
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Unread 07-21-2014, 04:49 PM   #4
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Default Re: MCOR Issues?

Quote:
Originally Posted by TahoeDawgZ71 View Post
I question the condition of the other three batteries that haven't yet failed.
I questioned them too, that's why they are were all replaced....
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Unread 07-21-2014, 05:55 PM   #5
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Default Re: MCOR Issues?

I misread. I thought he only replaced the three bad ones..... Which controller are you using? I wasn't aware that PlumQuick made an Executioner motor for the Excel system.. Did PlumQuick know you had an Excel cart when you ordered the motor?
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Unread 07-21-2014, 06:29 PM   #6
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Default Re: MCOR Issues?

Quote:
Originally Posted by TahoeDawgZ71 View Post
I misread. I thought he only replaced the three bad ones..... Which controller are you using? I wasn't aware that PlumQuick made an Executioner motor for the Excel system.. Did PlumQuick know you had an Excel cart when you ordered the motor?
Curtis 250 amp controller. As to the motor I bought it from forum member mymonstertruck but he removed it from an Excel cart that was built very close to mine and he was getting better than 30 mph....

I also wonder if I'm expecting too much from an electric cart as I do live in a very hilly and large HOA with a round trip to the marina being least 2.5 mies.
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Unread 07-21-2014, 06:58 PM   #7
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Default Re: MCOR Issues?

Quote:
Originally Posted by teecro View Post
Curtis 250 amp controller. As to the motor I bought it from forum member mymonstertruck but he removed it from an Excel cart that was built very close to mine and he was getting better than 30 mph....

I also wonder if I'm expecting too much from an electric cart as I do live in a very hilly and large HOA with a round trip to the marina being least 2.5 mies.
Did he also have a 250 amp controller? Executioner motors crave power. 250 is stock.
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Unread 07-21-2014, 07:30 PM   #8
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Default Re: MCOR Issues?

Quote:
Originally Posted by TahoeDawgZ71 View Post
Did he also have a 250 amp controller? Executioner motors crave power. 250 is stock.
I don't know what controller he was quoting the est speeds as I see his cart has a 500 amp controller. I will upgrade the controller within the next couple of months and I've got a big relay ordered.
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Unread 07-21-2014, 07:32 PM   #9
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Default Re: MCOR Issues?

Quote:
Originally Posted by teecro View Post
I don't know what controller he was quoting the est speeds as I see his cart has a 500 amp controller. I will upgrade the controller within the next couple of months and I've got a big relay ordered.
You need to find out which controller he was using... I've heard that there is now a such thing as a 500 amp excel controller that will play nicely with high speed motors. After you figure that out I'll be able to help you more.
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Unread 07-21-2014, 07:42 PM   #10
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Default Re: MCOR Issues?

TahoeDawg---I found this post from MyMonstertruck:

Re: 2010 CC i2 excel 500amp conversion kit
wrong kit number sorry here is the right one
GE controller 51-FX503G021K

http://www.fsip.biz/Documents/GolfPO_web2012.pdf

open link let it down load for a minute or so then scroll down to pg 12
the 500 amp controller 51-FX503G021K is not on the pg. only the 300amp is. I called and got the 500amp controller #.
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