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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-04-2016, 09:35 AM | #21 | |
Gone Wild
Join Date: Jul 2010
Location: Peachtree City, Ga.
Posts: 2,759
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Re: 2009 PDS cable question
"Why, drag for the most part in multiple areas. Brakes, windshield, dog hanging out of the cart "
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03-04-2016, 11:11 AM | #22 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 2009 PDS cable question
SWMBO and I have streamlined felines, so they have very little mechanical drag at speed.
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03-04-2016, 11:15 AM | #23 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
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Re: 2009 PDS cable question
There's much that can be done to make your dog more aerodynamic
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03-04-2016, 11:32 AM | #24 | |
Gone Wild
Join Date: Aug 2014
Location: fletcher,nc
Posts: 601
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Re: 2009 PDS cable question
Quote:
WOW-it just dawned on me that if you have good aero on a cart it becomes dynamically equal to an SR71 Blackbird...........cart`s just got even cooler! if i put an aero body on my cart,maybe i could get a job with the CIA.......nahhh. |
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03-04-2016, 12:33 PM | #25 | |
Not Yet Wild
Join Date: Dec 2014
Posts: 21
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Re: 2009 PDS cable question
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03-04-2016, 04:06 PM | #26 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 2009 PDS cable question
Quote:
A completely stock 36V PDS cart has 12.44:1 gears in the differential and 18x8.50-8 tires, which have an effective gear ratio of 0.75:1 and those two ratios combines yields a final drive ratio of 16.59:1. With the speed chip (Plug with two red wires) installed, the controller limits the motor to about 4400RPM, which equates to about 19MPH on 18" tall tires. Your cart is traveling roughly 40% faster than 19MPH, so the final drive ration has been changed (Taller tires and/or numerical lower differential gear ratio); Or the speed sensor on the motor has been altered so fewer pulses per motor revolution is produced, or a combination of the two. The maximum RPM a stock PDS motor with turn when powered by a 36V battery pack is about 5600RPM, which is only 24MPH on 18" tall tires, but would be 26.7MPH on 20" tall tires. Basically, there are more than one way of getting the cart into the 26-27 MPH range. so lets start with identifying how tall the tires are. What are the number embossed on the sidewalls? |
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03-05-2016, 09:20 AM | #27 |
Getting Wild
Join Date: Apr 2015
Location: Diamondhead, MS
Posts: 107
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Re: 2009 PDS cable question
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