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Unread 02-22-2010, 05:58 PM   #61
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Default Re: Upgrading Controller and Motor

Decide what you are shooting for , torque, speed, hauling ...etc.
then post EZGO ?'s in a new thread in that section
and CC ?'s in a new thread here.

PS! to BGW
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Unread 02-22-2010, 07:27 PM   #62
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Default Re: Upgrading Controller and Motor

Quote:
Originally Posted by bigjohnrider View Post
Is a Trojan Black Box battery any good?
That may be a Pacer battery by Trojan. It is their "value" battery and I have not heard anything good about them so far.
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Unread 02-23-2010, 08:47 AM   #63
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Default Re: Upgrading Controller and Motor

OK, Thanks Gleemo.
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Unread 02-23-2010, 06:43 PM   #64
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Default Re: Upgrading Controller and Motor

A couple more battery questions if I can.

Why would battery number 3, that read 8.1volts and a SG of 1.15+4 after charging,,, be oozing a little acid, from only one cell, while it is sitting and not on the charger? That battery also dropped down to 7.8 volts in 3 days. Also how long will it take for good batteries to discharge from sitting idle?

I've got new 4 ga. cables coming and I think I found a used battery that will be a good replacement for the bad one. I don't really want to buy new batteries until after this summer.

These questions come up when I realize that I probably won't use the cart right now, more than one weekend a month average. Is there a downside to not using it more than that? Any special maintenance to do?
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Unread 02-23-2010, 06:52 PM   #65
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Default Re: Upgrading Controller and Motor

Why would battery number 3, that read 8.1volts and a SG of 1.15+4 after charging,,, be oozing a little acid, from only one cell, while it is sitting and not on the charger? That battery also dropped down to 7.8 volts in 3 days.
This one has a dead cell and is shot

Also how long will it take for good batteries to discharge from sitting idle?
4 to 6 months

These questions come up when I realize that I probably won't use the cart right now, more than one weekend a month average. Is there a downside to not using it more than that? Any special maintenance to do?
Charge the cart fully before you leave it and charge it again when you get back before you drive it.
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Unread 03-05-2010, 10:07 AM   #66
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Default Re: Upgrading Controller and Motor

Well here's the update. I got rid of the bad battery and replaced it with a 4 year old Trojan that when fully charged reads 9.0 volts and the entire system reads 54.1 volts.

I upgraded the cables to 4ga and the difference is noticeable. It seems to get to top speed a little quicker but the main difference is when I round the corner and start up the grade to my house,,,, it hardly slows at all. It seems to compensate nicely for the 4 inch lift and 20 inch tires.

Thanks for all the good information and suggestions. ,,,,,,
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Unread 03-05-2010, 10:12 AM   #67
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Default Re: Upgrading Controller and Motor

Quote:
Originally Posted by Pfretz View Post
Well here's the update. I got rid of the bad battery and replaced it with a 4 year old Trojan that when fully charged reads 9.0 volts and the entire system reads 54.1 volts.

I upgraded the cables to 4ga and the difference is noticeable. It seems to get to top speed a little quicker but the main difference is when I round the corner and start up the grade to my house,,,, it hardly slows at all. It seems to compensate nicely for the 4 inch lift and 20 inch tires.

Thanks for all the good information and suggestions. ,,,,,,
Good JOB

Just a reminder when testing pack voltage , do so 1 hour after charge has completed , this allows top charge to settle .
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Unread 03-05-2010, 10:14 AM   #68
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Default Re: Upgrading Controller and Motor

Thanks for giving us your results and input. Enjoy the ride
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Unread 03-05-2010, 12:30 PM   #69
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Quote:
Originally Posted by GLEEMO View Post
Good JOB

Just a reminder when testing pack voltage , do so 1 hour after charge has completed , this allows top charge to settle .
Yes,,, it did drop down to 51.8 by this morning and the individual batteries are reading form 8.3 to 8.6. We're taking it to the Keys next month so it'll get a hard daily workout for a couple of weeks.

I'm sure I'll find more to upgrade and have a bunch more questions when I get back,,,,,,, it's becoming addictive and a whole lot of fun.
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Unread 03-05-2010, 12:58 PM   #70
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Default Re: Upgrading Controller and Motor

Quote:
Originally Posted by dougmcp View Post
Before you replace anything I would do 2 tests. Start with a full charge and measure each battery for voltage with a digital meter then do a specific gravity test and post all the results.
If you don't have a voltmeter and need something cheap to do the job, Harbor Freight has them for about $5: http://www.harborfreight.com/cpi/cta...emnumber=90899



Hydrometers can be had from Ace Hardware for about $6: http://www.acehardware.com/product/i...LAID=109343097



Here is a state of charge chart for your use:

Just remember this chart , the 8.3 Volt batteries are at only 80% just imagine what will happen with a set of all NEW batteries.

Good work and nice looking cart , don't run over any kids or OLD folks like me
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