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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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10-27-2016, 03:05 PM | #1 |
Gone Wild
Join Date: May 2016
Location: California
Posts: 210
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Increase from 48 volts?
So I'm about due for new batteries in my 2010 YDRE. I've been trying to find information on increasing the voltage. Aside from added weight, what are the pros/cons of increasing voltage? I've seen some go from 48-72 volts, but what does this do for your cart? And why do I never hear of 56 volts? What else do you replace when increasing voltage?
Charging issues? |
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10-27-2016, 04:30 PM | #2 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Increase from 48 volts?
Need a new controller, new charger, new solenoid. And I don't think the stock Hitachi motor will be happy at all on 72v. Not sure why no 56v, but would still need a new controller & charger (never seen a 56v lead acid battery charger). New alltrax 48v controllers max out at 62v, which would be marginal at best on a fully charged 56v pack.
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10-27-2016, 05:07 PM | #3 |
Gone Wild
Join Date: May 2016
Location: California
Posts: 210
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Re: Increase from 48 volts?
I have the xct48400, heavy duty solenoid and a high speed banded motor, so I was hoping it would be plug and play with the exception of the charging issues.
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10-28-2016, 09:34 AM | #4 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Increase from 48 volts?
Well, 56v is gonna be on the edge, would have to let battery voltage settle after charging before driving.
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10-28-2016, 10:35 AM | #5 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,358
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Re: Increase from 48 volts?
This controller has a 2 yr warranty. Warranty is void if run on more than 48v. If you want to go 72v sell this control and solenoid and charger and get a 72v system. That should wow you.
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10-28-2016, 01:33 PM | #6 |
Gone Wild
Join Date: Apr 2015
Location: Pennsylvania
Posts: 378
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Re: Increase from 48 volts?
Industry standard EV voltages are typically 12V increments. (individual batteries usually being 2V/cell). So you have 12, 24, 36, 48, 60, 72... etc. Likewise this is how chargers are rated as well so for 56V you may have a tough time finding a charger that works correctly.
If upgrading to 60 or 72 I would suggest a solenoid upgrade since the one you have is likely 36/48. I am not familiar with too many high voltage controls for sepex systems but I would probably try a Curtis 1244. They have models ranging from 24-80V and 400-750A. A 400 or 500A should be plenty. They don't use a speed sensor and the field mapping ability is not quite as diverse as the 1268s but they share the same footprint. As for a motor, I would agree that the Hitachi would be fried, it just barley holds up on the rated voltage... Apparently a D&D 170-501 can run on 72V, as can some models of AMD. It seems for some well-built motors the voltage rating can be ignored if the field mapping is properly compensated. |
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