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Unread 12-22-2015, 12:46 PM   #1
Not Yet Wild
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Default Went from 18" tires to 23" tires - still have same top speed

I just lifted my 2001 Club Car series cart - serial AA0130. I went from the stock 18" tires to 23" tires. My phone GPS gives the same top speed before and after (11 mph). This was measured on a flat road with a full charge. Batteries are brand new Trojan T-875's. Shouldn't the top speed have increased by 23/18 to 14mph?
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Unread 12-22-2015, 04:12 PM   #2
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Default Re: Went from 18" tires to 23" tires - still have same top speed

Pump up the tires and do an alignment. should help
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Unread 12-22-2015, 04:50 PM   #3
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Default Re: Went from 18" tires to 23" tires - still have same top speed

You increased the diameter of your tires and decreased the available torque to drive them, that could be your problem.
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Unread 12-22-2015, 05:13 PM   #4
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Default Re: Went from 18" tires to 23" tires - still have same top speed

Batteries,....
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Unread 12-22-2015, 05:35 PM   #5
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Default Re: Went from 18" tires to 23" tires - still have same top speed

Did you upgrade with smooth tires or did you put on mud bog grade tires?
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Unread 12-22-2015, 06:26 PM   #6
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Default Re: Went from 18" tires to 23" tires - still have same top speed

Quote:
Originally Posted by ticklechicken View Post
I just lifted my 2001 Club Car series cart - serial AA0130. I went from the stock 18" tires to 23" tires. My phone GPS gives the same top speed before and after (11 mph). This was measured on a flat road with a full charge. Batteries are brand new Trojan T-875's. Shouldn't the top speed have increased by 23/18 to 14mph?
Not always going to work out that way.... Taller tires might allow you to go faster than shorter tires if you have available HP remaining but bigger rims & mud style tires are heavy and rob you of remaining torque....

What is your cable size? If still small 6 gauge that is a bottle neck as can be your FNR switch...
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Unread 12-22-2015, 07:46 PM   #7
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Default Re: Went from 18" tires to 23" tires - still have same top speed

I'm only using this in the woods, and I usually drive around 5mph because the terrain is so rough. I'm fine with the 11mph top speed. I was just surprised that it didn't go up a little. I'm more concerned that something else is wrong.

The reduction in torque is a little annoying though. I would like to get that back and more. I'm looking at options for that right now.

Tires
These are mud bog style tires that I'm running at around 7psi. I knew these would have more rolling resistance, but I didn't expect it to be enough to fully counteract the diameter increase.

Alignment
I installed the lift kit myself and set the toe-in to the recommended 1/2".

Batteries and Wires
I installed brand new Trojans this morning. This didn't affect anything. I got the same 11mph with the old and new batteries. I currently have 6 gauge wires installed. I have 2 gauge wires in the mail.
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Unread 12-22-2015, 09:13 PM   #8
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Default Re: Went from 18" tires to 23" tires - still have same top speed

You need more power (amps) maybe a 500 amp controller.
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Unread 12-22-2015, 09:33 PM   #9
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Default Re: Went from 18" tires to 23" tires - still have same top speed

He should notice a difference with the 2awg cables.
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Unread 12-23-2015, 09:47 AM   #10
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Default Re: Went from 18" tires to 23" tires - still have same top speed

I recommend a higher amp controller, heavy duty solenoid, and heavy gauge cables to get your torque back.
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