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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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04-25-2019, 08:59 PM | #1 |
Not Yet Wild
Join Date: Dec 2018
Posts: 28
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G22 increase in speed
So my cart goes 15mph, 20" tires new batteries. Everything else stock. If I upgrade the speed controller to a 600amp will that boost the speed?
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04-26-2019, 02:27 AM | #2 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: G22 increase in speed
If you actually allowed access of 600a to your stock motor, it would kill the stock motor. Allow me to explain a little further. The controller is not a "pump", capable of pumping 600a into a motor, think of it like a Valve, allowing access to the battery power available, which is contingent on voltage available, roughly 48 in your case. Your motor can only draw so much amps (which varies on current motor rpm, it draws max amps when it's at 0 rpm, and tapers back as rpm increases). This is where the folks who sell controllers get you. If your motor can only use 400a at 0rpm, they can't "pump" 600a into it at 48v "your battery pack". And many stock motors would not live a long & happy life if fed their maximum amps every time you mash the pedal. Amps does not equal speed, it equals torque when "mashing the gas" from a standstill. Don't buy the sales pitch, your stock motor doesn't need, or want 600a. Very few motors I have used can even draw 600a (and no stock motors can at 36v or 48v).
Now that I let you have that, let's get to it. Does your G22 have a Hitachi motor? A GE motor? A ADC motor? It does matter for your upgrade path, and best, and cheapest options. Some can be speed up to 19mph by the dealer (it's not free, they have to buy the unique code from yamaha). Only certain ones can be speed up by the dealer cheaply. A new controller can get you faster speeds than the dealer can get, are you considering the dealer speed route (how fast do you need).The fastest motor amongst them could get you 24mph on stock sized tires (the GE motor is the fastest).. Do you plan on keeping that tire size? The stock motors won't get you to 25 or above, no matter what option you choose on 48v. Skip the high speed gears idea, it's really hard on the stock motor and controller. I have seen brand new carts have problems in only a few years with gears. (Not saying I haven't seen them last longer, I do still see them "still going"). I try to avoid that gear route, and when I have to, I use 10.5:1 gears, closer to the stock ratio. No 8:1, and no 6:1 gears. Best bet, if 19 to 24 mph will suit your needs, go with dealer speed code, or a better motor controller. Don't do the high speed gears. Gears sound cheap, until you see their hills problems, and reduced parts life problem. |
04-26-2019, 06:21 AM | #3 |
Not Yet Wild
Join Date: Dec 2018
Posts: 28
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Re: G22 increase in speed
Thanks! I'll check the motor, I'm not sure what kind it is.
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04-27-2019, 09:20 AM | #4 | |
Not Yet Wild
Join Date: Dec 2018
Posts: 28
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Re: G22 increase in speed
Quote:
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04-27-2019, 08:27 PM | #5 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: G22 increase in speed
Hitachi
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04-27-2019, 10:16 PM | #6 |
Not Yet Wild
Join Date: Dec 2018
Posts: 28
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Re: G22 increase in speed
Thanks! So speed code or not?
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04-28-2019, 11:11 AM | #7 |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: G22 increase in speed
Speed code IS available for G22 with Hitachi.
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05-01-2019, 08:39 PM | #8 |
Not Yet Wild
Join Date: Apr 2019
Posts: 24
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Re: G22 increase in speed
I was concittering buying a cart but I have to be able to beat my buddy’s rxv it’s a town cart only used on the street with no hills. He claims he can do 30 how easy it is for the Yamaha carts to reach those speeds ... will a gasser even compete. I was looking at plowmans stuff and looks like a new controller and motor is the only option to hit those speeds.
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05-01-2019, 09:35 PM | #9 |
Not Yet Wild
Join Date: Dec 2018
Posts: 28
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Re: G22 increase in speed
Unless he is running 30' tires he's not getting 30mph.
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05-01-2019, 10:12 PM | #10 | |
Over This Interview Is...
Join Date: Jun 2012
Location: AZ
Posts: 17,449
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Re: G22 increase in speed
Quote:
What size tires on that Yamaha you want to beat Rxvs with? |
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