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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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06-02-2010, 04:35 PM | #21 | ||
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,283
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Re: 36v to 48v conversion
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My only concern is whether or not the original poster's question has been addressed. |
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06-02-2010, 04:36 PM | #22 |
Gone Wild
Join Date: Nov 2008
Posts: 240
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Re: 36v to 48v conversion
Point taken with a grain of salt. However i did not throw the first punch, nor did i attack anyone personal until attacked first.
I came here just over a year ago and tried to participate in an informative mater with explinations of the science behind it. Remember it is us MAD SCIENTIST that gave you this stuff to tinker with However a few individuals, some commenting here now, did not care for educated answers or the science behing their hobby. They ran me off, and i am not the only one who feels this way. The problem is there are just a few individuals mostly a couple of regulars and staff admin that get offended when you try to offer contrary advice that does not fit their agenda and logic I guess they think if proven wrong they will loose thier status or affraid to learn something. In this thread for example if you install a larger motor, and smaller batery capacity, your run time will be less. Now you want to call me names for pointing that out? i do not get it. |
06-02-2010, 04:53 PM | #23 | ||
Gone Wild
Join Date: Nov 2008
Posts: 240
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Re: 36v to 48v conversion
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06-02-2010, 05:45 PM | #24 |
Not Yet Wild
Join Date: May 2010
Location: Ontario Canada
Posts: 2
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Re: 36v to 48v conversion
So I have 3 12 volt Gel cells rated at 350 amps that multiplies out to 12600. That being said why should we use 6 x 6 volt batteries if we can use 3 12v and get more watts
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06-02-2010, 05:53 PM | #25 |
Gone Wild
Join Date: Mar 2009
Location: Roseville, CA
Posts: 2,757
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Re: 36v to 48v conversion
Because they're in series and they don't add unless they are in a parallel configuration.
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06-02-2010, 05:55 PM | #26 | |
Gone Wild
Join Date: Nov 2008
Posts: 240
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Re: 36v to 48v conversion
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For example if we wanted your buggy to last, we would never use an upgraded vacuum cleaner electric motor using DC series wound stator with brushes. They are made to fly apart, brushes wear out after a couple of hundred hours of use, and prone to over heating and extremely inefficient. Not to mention a negative torque coefficient as the torque decays as RPM goes up loosing power to 0 HP when at Red Line RPM. Nope we use an AC 3-phase induction high voltage motor operated in a constant torque configuration from 0 RPM to Red Line RPM like any EV like the Tesla. The AC motor is almost impossible to wear out or destroy with the proper controls, and around 98 % efficient vs 75% for a brushed DC motor. Nor would they use flooded lead acid batteries that have an energy density of 40 watt hours / kilogram, and can only be discharge to 50% with out damage, and an average life span of 3 to 4 years. Nope we would use Lithium –Ion with a density of 200 wh/kg 4 times that of FLA in ½ half the space and 1/3 the weight. They last 10 or more years, and can be discharged to 90% DOD with no loss in capacity or life span. The reason is obvious why buggies do not have that technology, we cannot afford it yet. Well EZ-GO made a step in the right direction as the RXV uses a single phase 48 volt AC motor. |
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06-02-2010, 06:24 PM | #27 | |
THE CUSTOM KID
Join Date: Oct 2008
Location: Tallahassee Florida
Posts: 820
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Re: 36v to 48v conversion
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06-02-2010, 06:24 PM | #28 |
no clue
Join Date: Sep 2009
Location: spicewood, texas
Posts: 3,308
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Re: 36v to 48v conversion
whew! jim
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06-02-2010, 06:33 PM | #29 |
Raised by coyotes
Join Date: Nov 2008
Location: Central Texas
Posts: 5,658
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Re: 36v to 48v conversion
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06-02-2010, 06:40 PM | #30 |
no clue
Join Date: Sep 2009
Location: spicewood, texas
Posts: 3,308
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Re: 36v to 48v conversion
hey, mine is way quiet! anyway i bought just to have fun. jim
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