11-22-2021, 08:01 AM | #1 |
Not Yet Wild
Join Date: May 2021
Posts: 19
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Motor getting hot
I have a GE motor and a 600 amp dc navitas controller on my precedent. I have upgraded the motor cables to 2 gauge welding cable and I am still getting a lot of heat through my motor cables. I use my cart for hunting primarily but when I drive it I turn the speed all the way down to where I'm at max throttle on the pedal per navitas so it runs cooler/ more efficient. I have taken a wire brush to clean the posts on the motor the best I can but there is still some rust on it but no corrosion. I know that that isn't helping any but can the post be replaced or what else can I do to help because I know the heat isn't good for any of the electronics
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11-22-2021, 10:23 PM | #2 | |
Gone Wild
Join Date: Apr 2020
Location: 1000 Oaks, SOCAL
Posts: 424
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Re: Motor getting hot
Quote:
Here is an excerpt from an email from Plum Quick during our discussions - "First off, you have the thin can GE style motor I wouldn’t recommend running over a 400 amp controller and run the stock GE field map. Yes, it has a 4 pole high speed magnet. The brush rigging is small in these GE motors and if you’re not careful you’ll burn the brushes up drawing too many amps. The AMD style you can run 6,500 rpm’s, GE around 6,000 max." |
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11-22-2021, 11:12 PM | #3 |
Gone Wild
Join Date: Dec 2016
Location: Kingsland, Georgia
Posts: 1,825
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Re: Motor getting hot
What is getting hot, the motor itself or the 2 gauge wires/terminals? The motor can should not exceed 170 degrees. You can check that with a laser thermometer fairly accurately.
If you are just checking the motor with your hand, normal operating conditions will cause the motor to get pretty hot, hot enough to burn you. This is normal. |
11-23-2021, 12:27 PM | #4 |
Gone Wild
Join Date: Sep 2013
Location: Alabama
Posts: 772
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Re: Motor getting hot
Are you seeing any flashing warning lights on the controller when the cables/motor get hot? If the motor is overheating you should see a 1-4 light flash warning.
Did you purchase your motor cables from a reliable source vs. cheap cables? You mentioned using the cart for hunting. If you are just driving to and from a hunting spot that's one thing. If you are driving short distances very slowly with starts and stops it puts a lot of strain on the motor. That motor does not like to be run at continual slow creeping speeds. If I am wrong, someone will correct me. |
11-24-2021, 09:07 AM | #5 | |
Not Yet Wild
Join Date: May 2021
Posts: 19
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Re: Motor getting hot
Quote:
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11-24-2021, 09:11 AM | #6 | |
Not Yet Wild
Join Date: May 2021
Posts: 19
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Re: Motor getting hot
Quote:
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11-24-2021, 10:13 AM | #7 | |
Gone Wild
Join Date: Dec 2016
Location: Kingsland, Georgia
Posts: 1,825
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Re: Motor getting hot
Quote:
F1 and F2 are usually smaller wires and provide field current. They should not get hot. With 2 gauge wires, the maximum ampacity is 205. You may be running close to that climbing the steep hills. Unless the insulation starts melting, I wouldn't be too concerned. The insulation temperature rating is 194 degrees F. If you can touch the wire briefly and not get burned, it is nowhere near that temperature. 194 degrees will fry you. I'd say, you don't have much to worry about at this point. Your motor and wires are fine. The motor should be under 170 degrees. |
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11-24-2021, 12:25 PM | #8 |
Gone Wild
Join Date: Apr 2017
Location: SE TN
Posts: 2,218
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Re: Motor getting hot
Double post
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11-24-2021, 12:30 PM | #9 |
Gone Wild
Join Date: Apr 2017
Location: SE TN
Posts: 2,218
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Re: Motor getting hot
Do the 5 second check. If you can hold your hand on the motor for a count of 5 seconds it's ok. Or better yet replace that 20 old motor with a modern one to match the Navita. You can do it now or wait until you get stuck out in the woods.
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11-24-2021, 03:49 PM | #10 |
Gone Wild
Join Date: Apr 2013
Location: Deep Run, NC
Posts: 2,536
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Re: Motor getting hot
There's not much to a stock GE motor anyway, and your running a 600 amp controller. I think a little hot is to be expected. 400 amp is a plenty for any stock motor. We're you thinking of eventually getting a bigger motor when you went with the 600 amp? If so you may want look at doing that soon.
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