36v to 42v

flag · 03-24-2009, 09:10 PM

i have an old yahmaha 36v resistor golf cart and i was told that i could add an extra battery and make it 42v and it would give me more torque and my run time would be longer. is this true or is there more i need to do

mikesmotortoys · 03-24-2009, 09:13 PM

Quote:

Originally Posted by flag

i have an old yahmaha 36v resistor golf cart and i was told that i could add an extra battery and make it 42v and it would give me more torque and my run time would be longer. is this true or is there more i need to do

You will need the capability to charge to 42 volts, that's the second step...

flag · 03-24-2009, 09:22 PM

if it will work i was planning on charging the extra battery seperate.i want to make sure it will work before i go and buy a battery and i dont wont to burn anything up

Nate · 03-24-2009, 09:57 PM

Make sure the extra battery is fully charged or it will run dead first and sustain damage. It will work, I don't know about longer run time but you will cover more ground in the same amount of time.

dirtysouth · 03-24-2009, 10:10 PM

Quote:

Originally Posted by mikesmotortoys

You will need the capability to charge to 42 volts, that's the second step...

Hey Mike, I had a dealer in Il. who used to ad the extra batt. He said the OE charger worked just fine... Was he pipin' sunshine? He's no longer in bus. and we turned him to collections... But other than that, he was a jam up guy.

flag · 03-25-2009, 06:24 AM

Thanks everybody does anybody know what i will do for torque thats really what im after because i will be using it in the woods and want to put on bigger tires

gornoman · 03-25-2009, 06:27 AM

Quote:

Originally Posted by dirtysouth

Hey Mike, I had a dealer in Il. who used to ad the extra batt. He said the OE charger worked just fine...

The charger would work, it would charge the 42v pack to 36v and stop. There would be no benefit, and ALL of the batteries would be UNDER charged. It's little wonder he is out of business.

scottyb · 03-25-2009, 06:28 AM

Added amperage will increase torque IF you can access it ( your controller is not too small). But your's is prolly an older resistor cart? In which case you will see an increase in heat at the working components as well. This is really not the best way to go IMHO. Convert to 48 volts and leave the old 36v motor. That will increase torque!

flag · 03-25-2009, 11:04 AM

Thanks so i would need to get rid of the resitor and change it over to a controller and add 2 more 6v batteries

mikesmotortoys · 03-25-2009, 11:12 AM

Quote:

Originally Posted by gornoman

The charger would work, it would charge the 42v pack to 36v and stop. There would be no benefit, and ALL of the batteries would be UNDER charged. It's little wonder he is out of business.

Gorno beats me to the answer - AGAIN

Flag - the same thing will happen if you try to charge the extra battery seperatley - It is still wired in series with the other 6, so the charger will only charge the 7 batteries to 36 volts, unless you MOVE the charger harness to 36 volts in series and final charge the last (or first) battery in the pack seperately. I'm only guessing here, so any sparkie experts feel free to chime in!!!

If you just want to "try" the system out the first time, then charge the 6 batteries you have, then add in a fully charged 7th battery and give it a test run. This will give you a realistic 'test' of your new configuration. If you like it, then you'll need to look into the correct way to charge all 7 batteries at once. There are 42 volt chargers available, however...

03-24-2009, 09:10 PM	#1
flag Not Yet Wild Join Date: Mar 2009 Posts: 4	36v to 42v i have an old yahmaha 36v resistor golf cart and i was told that i could add an extra battery and make it 42v and it would give me more torque and my run time would be longer. is this true or is there more i need to do
flag Not Yet Wild Join Date: Mar 2009 Posts: 4

03-24-2009, 09:22 PM	#3
flag Not Yet Wild Join Date: Mar 2009 Posts: 4	Re: 36v to 42v if it will work i was planning on charging the extra battery seperate.i want to make sure it will work before i go and buy a battery and i dont wont to burn anything up
flag Not Yet Wild Join Date: Mar 2009 Posts: 4

03-24-2009, 09:57 PM	#4
Nate Gone Wild Join Date: Dec 2006 Posts: 679	Re: 36v to 42v Make sure the extra battery is fully charged or it will run dead first and sustain damage. It will work, I don't know about longer run time but you will cover more ground in the same amount of time.
Nate Gone Wild Join Date: Dec 2006 Posts: 679

03-25-2009, 06:24 AM	#6
flag Not Yet Wild Join Date: Mar 2009 Posts: 4	Re: 36v to 42v Thanks everybody does anybody know what i will do for torque thats really what im after because i will be using it in the woods and want to put on bigger tires
flag Not Yet Wild Join Date: Mar 2009 Posts: 4

03-25-2009, 06:28 AM	#8
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,410	Re: 36v to 42v Added amperage will increase torque IF you can access it ( your controller is not too small). But your's is prolly an older resistor cart? In which case you will see an increase in heat at the working components as well. This is really not the best way to go IMHO. Convert to 48 volts and leave the old 36v motor. That will increase torque!

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03-25-2009, 11:04 AM	#9
flag Not Yet Wild Join Date: Mar 2009 Posts: 4	Re: 36v to 42v Thanks so i would need to get rid of the resitor and change it over to a controller and add 2 more 6v batteries
flag Not Yet Wild Join Date: Mar 2009 Posts: 4