01-10-2009, 10:43 PM | #1 |
Gone Wild
Join Date: Nov 2008
Location: Florida
Posts: 484
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72v motor
what motor are you guys using in a 72v cart? I assume my stock motor will not work in my '98 48v series CC. EMP said they couldn't help me. I tried a search but found nothing. Any recommendations?
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01-10-2009, 11:44 PM | #2 |
nimda
Join Date: Jun 2007
Posts: 13,022
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Re: 72v motor
Many people run the stock series motors on 72 volts without much trouble but I wouldn't run anymore than that. EMP won't do motors over 48 volts for some reason. I'll be looking for new motor builder real soon.
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01-11-2009, 12:09 AM | #3 |
Master BS'r
Join Date: Jul 2007
Location: S. Florida
Posts: 1,819
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Re: 72v motor
I believe a D-380 can handle the additional volts...even higher than 72. I'll wait for Nate to chime in.
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01-11-2009, 12:42 AM | #4 |
nimda
Join Date: Jun 2007
Posts: 13,022
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Re: 72v motor
Its more about the RPMs you get when the extra volts are added. If a motor runs, for sake of simplicity say 4000 RPM on 36 volts......at 72 volts it will run 8000 RPM. I myself don't like to spin a motor over 8K...but thats me. A series wound motor, if left unchecked, will grenade itself. We have had better luck using a stock wound motor on 108 volts than we have with a custom wound motor because of the RPMs. The stocker spins 2800 on 36 volts, 72 volts is 5600 and 108 volts is 8400. (again, no math BS, just for simplicicty sake.) It'll live a bit longer at that level vs over 10K. All the motor problems Muathia and I have experianced have been stemmed from too much RPM......which comes from the added voltage. (96 volts and above)
Use a low rpm torque motor to build torque and use voltage to gain RPM. A beast on 72 volts is a great combo. |
01-11-2009, 12:56 AM | #5 |
The Fabricator
Join Date: Dec 2006
Posts: 2,016
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Re: 72v motor
Put a gearbox in there, roady.
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01-11-2009, 01:07 AM | #6 |
nimda
Join Date: Jun 2007
Posts: 13,022
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Re: 72v motor
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01-11-2009, 01:39 AM | #7 |
The Fabricator
Join Date: Dec 2006
Posts: 2,016
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Re: 72v motor
Yeah but just think about how much faster you will be going.
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01-11-2009, 02:13 AM | #8 |
Gone Wild
Join Date: Oct 2007
Location: Snellville, Ga.
Posts: 1,304
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Re: 72v motor
I need to get my motor/cart running again. I had motor rebuilt by EMP, told them I was running up to 72v and they rebuilt motor with a "banding" Hope it holds together when I have time to play.
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01-11-2009, 10:10 PM | #9 |
Gone Wild
Join Date: Nov 2008
Location: Florida
Posts: 484
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Re: 72v motor
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01-11-2009, 10:25 PM | #10 |
nimda
Join Date: Jun 2007
Posts: 13,022
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Re: 72v motor
D395 on 72 volts with stock tires should be around 30 MPH with an extreme amount of torque. You will need a controller to handle it of coarse. It will stay in the lower RPM range. The peak HP on 48V is a little more than the D380.
D380 will have more top end than the D395 but less torque and HP. |
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