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1995 Club Car Electric Gear ratio

1995 Club Car Electric Gear ratio

Postby rodhower » Fri Feb 19, 2010 7:45 pm

I have a 1995 Club Car Electric,
http://picasaweb.google.com/rodnhower/Golfcart#
It's a stock 48 Volt except for an Alltrax 72V, 450A control and 8, 6 volt SAFT NiCad batteries.
I design motor controls for Kinetek Controls and plan on installing an AC induction motor and 450A control.
The motor has no problem going up to 7000 RPM's.
I've seen gear ratio's anywhere from 12:1 to 10:1 and the high speed after market sets that are 8:1
I don't need 8:1 since the AC motor can safely run at higher RPM's than a brush motor.
I actually have a choice of 10:1 or 12:1 since AMD (advanced motors and drives) makes a Kinetek transaxle with these ratios (they also do a 16:1) that will mate to my AC motor.
AC motor picture and control,
http://picasaweb.google.com/rodnhower/Kinetek#
I used the same AC induction motor on a Fairplay Goat that has 16.5:1 and 22.5" tires. This thing easily did 25 MPH (speed limited, I actually ran it at 30 MPH with a software change). It had lots of torque and would climb anything but a tree.
So, I know the motor and control will kick butt on my CC.
Here's a picture of the Goat,
http://picasaweb.google.com/rodnhower/Goat#
You can also email me directly at rodhower at ameritech dot net
Thanks,
Rod
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Re: 1995 Club Car Electric Gear ratio

Postby dougmcp » Fri Feb 19, 2010 8:28 pm

Nice clean looking Club Car Rod. Are you looking for opinions on the axle ratio?
Some days you're the pigeon, some days you're the statue, I'd rather be the pigeon!
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Re: 1995 Club Car Electric Gear ratio

Postby rodhower » Fri Feb 19, 2010 9:44 pm

Doug,
I need to know what the stock factory gear ratio is. I can mount this AC induction motor on the existing trans axle or go with one from Kinetek that might be lower. If it's 10:1 I can use stock, if it's 12:1 I'll go with the Kinetek 10:1. Either way, I plan on getting 35 MPH on the flat with hill climbing that will out perform most systems.
I put a similar AC induction system on a Chrysler GEM and can easily pull 26 MPH on a 15% grade (the stock GEM can only go 17 MPH on the same grade). This cart will serve as my personal vehicle and also a testbed for the software development I conduct on my AC induction system. I think I can do 30 MPH on the same grade with a 10:1.
Thanks,
Rod
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Joined: Thu Mar 15, 2007 12:10 pm
Location: Akron, OH

Re: 1995 Club Car Electric Gear ratio

Postby dougmcp » Fri Feb 19, 2010 11:25 pm

The stock gear ratio for Club Car was 12.44:1.
Here's a little site I use to determine tire diameter vs motor rpm vs gear set ratio, hope it helps. Link: http://www.4qd.co.uk/faq/roadspd.html
Some days you're the pigeon, some days you're the statue, I'd rather be the pigeon!
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