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Unread 08-27-2011, 12:19 AM   #1
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Default 1993 cc resistor cart vs solid state

I have recently purchased 2 1993 cc's 1st one is a resistor cart single selenoid, 2nd is a solid state. which cart is the better cart for 48v upgrade? Are there any differences besides slow speed driving?
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Unread 08-27-2011, 01:18 AM   #2
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Default Re: 1993 cc resistor cart vs solid state

Welcome to BGW.

There are big differences in resistor speed control compared to modern solid state speed control.
First lets review the basic operation of both systems;

How a resistor cart works:
The application will differ from cart to cart but the theory is the same .... key switch powers the micros at the F&R. The micro activates the solenoid which brings power to the speed wiper board assembly. The speed wiper selects a cable depending upon peddle position. Each of these cables runs to a different speed resistor . Each resistor has a graduated resistance value which regulates how much amperage is allowed to flow to the motor ...the motor goes faster the more amperage it is allowed to draw.


Early carts ( pre 89-90ish) use a series of graduated sizes of speed resistor coils to regulate speed. Each coil in the group offered less resistance than the previous one. When you stepped on the gas 100% of the available battery power (amperage) was drawn and speed was regulated by how much of this amperage was burned off (wasted) by the resistor coils. So even if you push the peddle a little it drains the batteries same as wide open throttle. The gas peddle operated a wiper which swept a contact across stationary lugs which connected to the resistors. The solenoid merely switched power on /off to the speed wiper.
This is why it does you no good to just upgrade the solenoid....

Modern carts use solid state speed control. These controllers only draw as many amps as you ask for with the peddle.... If you push the peddle down 10% they deliver 10% of their capacity. I say their capacity because a controller is like a gate valve (or a hose bib) to the amperage stored in the batteries... We have different size controllers(valves) available so 10% of a 400 amp is less than 10% of a 650 amp controller. Amperage = Torque.
The solid state controller does not waste any amps and this increases the run time.Hope this helps?

The 93 controller cart is a great little cart without an OBC. that would be my choice.
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Unread 08-27-2011, 06:53 AM   #3
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Default Re: 1993 cc resistor cart vs solid state

@ Scottyb:

Great explanation . .
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Unread 08-27-2011, 01:40 PM   #4
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Default Re: 1993 cc resistor cart vs solid state

thanks for the reply. what will i have to change to go to 48v besides selenoid, and charger.
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Unread 08-27-2011, 01:48 PM   #5
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Default Re: 1993 cc resistor cart vs solid state

Controller and cables
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Unread 08-27-2011, 03:27 PM   #6
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Default Re: 1993 cc resistor cart vs solid state

Quote:
Originally Posted by scottyb View Post
Controller and cables


batteries also either add 2 more 6 volt or a set of 8 volt.......and if your gonna use a C.C. 48 volt charger you,ll need an OBC.........................
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Unread 08-27-2011, 04:33 PM   #7
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Default Re: 1993 cc resistor cart vs solid state

Quote:
Originally Posted by shadowman View Post
batteries also either add 2 more 6 volt or a set of 8 volt.......and if your gonna use a C.C. 48 volt charger you,ll need an OBC.........................
Same conversion we did to your cart, Shadowman?
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Unread 08-27-2011, 08:02 PM   #8
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Default Re: 1993 cc resistor cart vs solid state

yep same exact thing and oh almost forgot the potbox..........works fine............................
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