New Battery Break In Advice

LBZ_Duramax · 03-12-2012, 08:28 AM

I know how to find out the ratio in truck rear end but not sure about this one because I cannot see the input turning. Is there a way to easily tell?

JohnnieB · 03-12-2012, 09:18 AM

Not that I know of on a series cart. Even if the differential had a label on it, the gears could have been changed.

If you ever decided to change the oil in the rear end, you might be able to count the teeth, or if you ever need to pull the motor, you can count shaft revolutions like you do with trucks and older cars.

Other that that, I haven't the foggiest idea of how to do it.

There is an indirect way, sort of at least. Use a DVM to find out if full pack voltage is being applied to motor.

Connect DVM Negative test lead to B- on controller and Positive test lead to M-. Place the meter so you can safely read it while driving or get a passenger to do it.
You should read full battery pack voltage (or very close to it) when the solenoid clicks and zero volts (or very close to it) when the pedal is floored and the cart is moving at top speed on level ground.

If you don't get pack voltage when the solenoid first clicks, something is wrong with the high current cables, or high current connections, or F/R switch, or motor.

If you get it, but it doesn't drop to near zero, the controller isn't turning all the way on for some reason. (IE: Programming or Throttle input, or it could be a bad controller)

(FWIW - When the controller is fully turned on, your reading the voltage drop across a dozen or more MOSFETs in parallel that are conducting 100% of the time, so it won't be much unless you are accelerating hard or climbing steep hill and drawing hundreds of Amps.)

If it is dropping to zero, my guess is that you have high torque gears or maybe a high torque motor.

LBZ_Duramax · 03-12-2012, 09:54 PM

The guy I bought/traded it from said something about the orange motors coming from a place in Maryland or up north somewhere. Is there anyone up there that does motors?
There is no handle on it and it is just painted orange. I mainly ride this cart in wide open spaces and would like some more speed.

03-12-2012, 08:28 AM	#21
LBZ_Duramax Not Yet Wild Join Date: Jul 2011 Posts: 71	Re: New Battery Break In Advice I know how to find out the ratio in truck rear end but not sure about this one because I cannot see the input turning. Is there a way to easily tell?
LBZ_Duramax Not Yet Wild Join Date: Jul 2011 Posts: 71

03-12-2012, 09:18 AM	#22
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: New Battery Break In Advice Not that I know of on a series cart. Even if the differential had a label on it, the gears could have been changed. If you ever decided to change the oil in the rear end, you might be able to count the teeth, or if you ever need to pull the motor, you can count shaft revolutions like you do with trucks and older cars. Other that that, I haven't the foggiest idea of how to do it. There is an indirect way, sort of at least. Use a DVM to find out if full pack voltage is being applied to motor. Connect DVM Negative test lead to B- on controller and Positive test lead to M-. Place the meter so you can safely read it while driving or get a passenger to do it. You should read full battery pack voltage (or very close to it) when the solenoid clicks and zero volts (or very close to it) when the pedal is floored and the cart is moving at top speed on level ground. If you don't get pack voltage when the solenoid first clicks, something is wrong with the high current cables, or high current connections, or F/R switch, or motor. If you get it, but it doesn't drop to near zero, the controller isn't turning all the way on for some reason. (IE: Programming or Throttle input, or it could be a bad controller) (FWIW - When the controller is fully turned on, your reading the voltage drop across a dozen or more MOSFETs in parallel that are conducting 100% of the time, so it won't be much unless you are accelerating hard or climbing steep hill and drawing hundreds of Amps.) If it is dropping to zero, my guess is that you have high torque gears or maybe a high torque motor.

03-12-2012, 09:54 PM	#23
LBZ_Duramax Not Yet Wild Join Date: Jul 2011 Posts: 71	Re: New Battery Break In Advice The guy I bought/traded it from said something about the orange motors coming from a place in Maryland or up north somewhere. Is there anyone up there that does motors? There is no handle on it and it is just painted orange. I mainly ride this cart in wide open spaces and would like some more speed.
LBZ_Duramax Not Yet Wild Join Date: Jul 2011 Posts: 71

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