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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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12-10-2014, 02:57 PM | #11 |
Gone Wild
Join Date: Oct 2009
Posts: 486
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Re: Voltage change
Voltage and RPM are proportional to each other. On paper theory going from 36 volts to 48 volts should increase rpm speed 25%. In practice it does not work that way because motors loose torque as RPM goes up.
Current is proportional to current. More current, more torque. The kicker with DC motors is maximum torque occurs at 0 RPM and linearly drops off as RPM increases. In other words they are inversely proportional with respect to DC motors. AC motors are a different story. |
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12-10-2014, 06:01 PM | #12 |
Gone Wild
Join Date: Oct 2014
Location: Fort Worth, Tx
Posts: 500
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Re: Voltage change
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12-11-2014, 09:40 AM | #13 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Voltage change
Quote:
However, the entire Torque/RPM curve moves the the right (Hypotenuse lengthens) and if the mechanical load remains the roughly same, it will be mighty close to it. For example: I went from 24MPH to 28MPH (16.7% increase) when I went from 36V to 42V (16.7% increase). |
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