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| Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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09-16-2019, 10:28 PM
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#1 |
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Not Yet Wild
Join Date: Sep 2019
Location: Austin, TX
Posts: 4
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Controller upgrade, Speed Increase
I have a 2015 G29 48v Yamaha cart. It has a stock motor, controller, solenoid but does have upgraded wheels and tires. Tires are 20in tall and the cart currently runs about 14mph on flat road. I just got the cart but will primarily be using it around the neighborhood on roads with small hills. I would like to try and increase the top speed to about 25 or more but dont want to spend a fortune.
I'm looking to upgrade the stock controller to an Alltrax XCT400 and a 200amp solenoid and keep running the stock motor for a little while. Any idea what kind of speed I can push out of the stock motor by just upgrading the controller and solenoid? I dont know what motor it has in it other than its black with a silver end and it doesn't have any stickers or marking on it left. |
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09-22-2019, 06:29 PM
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#2 |
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Gone Wild
Join Date: Apr 2019
Location: Baton Rouge, LA
Posts: 204
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Re: Controller upgrade, Speed Increase
im in the same boat! about to uprade to either Alltrax 400 or 500a controller. I have ZERO torque.
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09-22-2019, 07:22 PM
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#3 |
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Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Controller upgrade, Speed Increase
Stock motor will do about 22mph with the controller you are looking at, with stock tires. So your larger street tires will put you around 24 or so, with much more torque. Just about perfect for your needs. The weak stock motor doesn't last forever used this way, so start stashing away $ here & there for the day the motor craps out.
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09-29-2019, 08:12 PM
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#4 |
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Not Yet Wild
Join Date: May 2010
Posts: 23
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Re: Controller upgrade, Speed Increase
Will aftermarket motors work with the 400 amp motor or do most require the 500?
Sent from my iPhone using Tapatalk |
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09-30-2019, 03:21 AM
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#5 |
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Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: Controller upgrade, Speed Increase
Yes, nearly all aftermarket Sepex motors would do fine on 400a, but you have to chose one that's generally compatible with your cart (right speed sensor, right axle type).
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09-30-2019, 10:39 AM
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#6 |
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Happy Carting
 Join Date: Dec 2007
Location: Southern California
Posts: 73,406
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Re: Controller upgrade, Speed Increase
The XCT 400 has a peak output of 460 amps. That about equals the old 500 amp controller outputs. 400-460 is plenty for today's more efficient aftermarket sepex motors. I have an FSIP speed motor mated to a XCT300 control (350 peak) for 2 years now without a problem - still goes over 25 mph quickly.
The XCT500 includes the fan kit and turned down to 450 max plays will with most all stock motors and leaves a bit of headroom in terms of not overworking the controller |
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09-30-2019, 12:39 PM
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#7 |
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Not Yet Wild
Join Date: May 2010
Posts: 23
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Re: Controller upgrade, Speed Increase
Thank you both, great info!!
Sent from my iPhone using Tapatalk |
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