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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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08-26-2019, 04:34 PM | #11 |
Not Yet Wild
Join Date: Aug 2019
Posts: 63
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Re: 97 ez go txt converted to 48 volts going slow .
[QUOTE=JohnnieB;1648064]The problem is the expectation of a 48V motor powered by a 48V battery pack spinning as fast as a 36V motor powered by a 48V battery pack.
So did I screw up getting a 48 volt motor. Should I have bought a 36volt motor instead? Im just wanting 20mph sustained speeds and to able to haul 4 folks without losing substantial speed going up hills. I’m running 13ish mph on flat ground and 8-9 mph on hills just me 180lbs. |
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08-26-2019, 04:34 PM | #12 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 97 ez go txt converted to 48 volts going slow .
Quote:
34V is mighty low for a pedal up voltage. |
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08-26-2019, 04:48 PM | #13 |
Not Yet Wild
Join Date: Aug 2019
Posts: 63
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Re: 97 ez go txt converted to 48 volts going slow .
[QUOTE=JohnnieB
34V is mighty low for a pedal up voltage.[/QUOTE] What would cause such low voltage? |
08-26-2019, 06:30 PM | #14 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 97 ez go txt converted to 48 volts going slow .
Quote:
Nearly all traction motors that are used in golf carts will run from about 36V, or less, up to 48V, or more, so the trick was to find out where you were with a stock (36V) motor running at 48V and figure out what was needed to get you to where you want to be. 20 MPH is only about 4650RPM with stock tires (18" tall) and stock gears (12.44:1) in the differential. Admiral, AMD, D&D, EMI, Plumb Quick and most other cart motor manufacturers have motors that will do that at 48V. If your tires are a lot taller than stock, you'll most likely need a torque motor rather than a speed motor to make up for the torque loss cause be the taller tires. Also, low pressure tires take more torque to turn than standard pressure tires. Series drive systems slow more going uphill than Sepex and AC drives, but they all slow down some. The heavier the load, the more the cart slows. Carts will stock (or smaller) tires slow less than carts with tall tires. Carts with torque motors slow less than carts with speed motors, but high-speed/high-torque motors do exist, so there are exceptions. What is the tire height? What is the max inflation pressure? What did it do with the stock motor? What is her make/model of the 48V motor? |
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08-26-2019, 07:46 PM | #15 |
Not Yet Wild
Join Date: Aug 2019
Posts: 63
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Re: 97 ez go txt converted to 48 volts going slow .
I actually did quite a bit of research before I jumped into this project picking out specific components based on reviews and recommendations I had found. I however am not an expert. I researched wires,solenoids,batteries, switches, controllers and motors before I started. I had narrowed down my motor choices to d$d and plum quick. I went with plum quick because once I spoke with Robbie on the phone it made it sounded like their 48v black widow motor would do what I was needing to do based on his feedback and specs online. I know series carts lose a little speed on hills. I’m just not as impressed with the final product and I’m not sure that there is not something I am missing or a specific component not working right that is causing an issue.
Stock tires 30 psi Plum quick black widow motor Trojan 8v batteries Alltrax 48600 controller |
08-27-2019, 11:56 AM | #16 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 97 ez go txt converted to 48 volts going slow .
You have a SR48600, correct?
Do you get any error codes? Does the LED go to yellow (amber) when pedal is on floor? Attach a screen capture of the controller settings in Toolkit. According to the PQ Specs, the 48V Black Widow ought to propel a two seater series drive cart at 18-20 MPH on stock height tires and a 48V battery pack. Have you contacted PQ and asked why your motor isn't performing to specs? |
08-27-2019, 11:18 PM | #17 |
Not Yet Wild
Join Date: May 2019
Location: Florida
Posts: 6
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Re: 97 ez go txt converted to 48 volts going slow .
I don't know what the answer is to your question, but for comparison, I upgraded my 2000 EZGO TXT PDS cart from 36v to 48v with the AllTrax controller and stock motor and get 28-29MPH. I do have 23" tires on the cart and they're a bit overinflated, but still, I'm very happy with the performance (until the motor burns out )
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08-28-2019, 01:34 PM | #18 | |
Not Yet Wild
Join Date: Aug 2019
Posts: 63
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Re: 97 ez go txt converted to 48 volts going slow .
Quote:
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08-28-2019, 06:44 PM | #19 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: 97 ez go txt converted to 48 volts going slow .
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08-29-2019, 10:57 AM | #20 |
Not Yet Wild
Join Date: Aug 2019
Posts: 63
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Re: 97 ez go txt converted to 48 volts going slow .
ell I figured out what the problem was. I had an alltrax speed controller hooked up but had the setting set to user 1 switch mode with the controller turned off. I had assumed that this would negate any input coming from the speed switch.....I was wrong. After turning the cart to the alltrax speed controller setting on it will now lift the front of the cart off the ground and roll at 20mph with stock tires. Problem solved.
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