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Unread 04-13-2019, 08:21 AM   #11
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Default Re: What's the downside to bigger tires?

My yard cart, 4" Steeling lift and 20x10-10 Sahara Classics.

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Unread 04-13-2019, 11:47 AM   #12
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Default Re: What's the downside to bigger tires?

I have a '98 36v electric with 22" tires. I do have a 400 amp controller. It has plenty of power to take a load up a hill; I have a receiver hitch on the back and use it to pull trailers around as well.
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Unread 04-13-2019, 04:30 PM   #13
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Default Re: What's the downside to bigger tires?

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Originally Posted by Cruise Master View Post
Thank you ScottyB.
In case you didn't know ScottyB is the man for electric upgrades... if needed.
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Unread 07-13-2019, 06:02 PM   #14
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Default Re: What's the downside to bigger tires?

I have 2016 g29 with Madjax 6" lift. 14" wheels and 23" AT tires and original Trojans. Cart runs fine and cruises through neighborhood at about 14mph which is where 90% of the time it is used for. However, torque is very low . It only wants to run fairly flat ground.
What would be first thing to try and upgrade to get a little more torque?
I'd prefer to not have to spend tons on motor, controller, solenoid, etc.... What would be a good starting point to slightly increase torque for a pavement beater.
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Unread 07-16-2019, 07:25 AM   #15
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Default Re: What's the downside to bigger tires?

I experienced a minor low-end torque loss when I lifted my '87 gas cart 6" and added 22.5" tires. Been running it regularly for over 7 years now and haven't seen any notable negative effects on my stock components from the larger tires. But like I said, it is a gas cart, so maybe the gassers are more robust to handle that sort of thing.
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Unread 07-16-2019, 09:32 AM   #16
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Default Re: What's the downside to bigger tires?

Quote:
Originally Posted by davjohn28 View Post
I have 2016 g29 with Madjax 6" lift. 14" wheels and 23" AT tires and original Trojans. Cart runs fine and cruises through neighborhood at about 14mph which is where 90% of the time it is used for. However, torque is very low . It only wants to run fairly flat ground.
What would be first thing to try and upgrade to get a little more torque?
I'd prefer to not have to spend tons on motor, controller, solenoid, etc.... What would be a good starting point to slightly increase torque for a pavement beater.
It sounds like you have an electric cart. As you probably read the big tires reduce torque by the same amount they increase height. A 22" tire is 22% taller than stock. The first step towards regaining lost torque from bigger tires is a bigger speed control which will increase the amount of amperage the motor can draw from the battery pack when it is under load. This enables the motor to make more torque. Almost all stock motors can make more torque than the stock controller allows, some cam make as much as 30-35% more. So you can actually recover the tire size increase loss and gain a bit.
Read more here > https://www.cartsunlimited.net/upgrade-suggestions.html
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Unread 07-16-2019, 12:15 PM   #17
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Default Re: What's the downside to bigger tires?

I had a 48V DS with alltrax 400A controller, Admiral A1 motor, etc. etc. etc. on 25" tires would run about 30mph on flat ground, but get a decent hill it would drop to around 17-18mph. With stock tires it would do around 22-23mph, up the same hill it would drop to about 15mph. It would spin the 25" tires on my dirt road, and nearly lift the fronts off the ground in grass/pavement. The biggest loss going from 18-25" tires was the difference in the decrease of speed going up a hill.

Same wheels and tires on my gas powered Carryall (Kawasaki FE350, stock clutches, governor set to stock position, no zip tie mods or anything) will run around 21-22mph on flat ground. I could get more speed out of it, but don't need/want it. Biggest difference is that it will maintain 21-22mph up the same hill the DS would drop 12mph on. It will still pull a loaded 5x8 trailer perfectly fine as well. If there was a loss in torque (and I'm sure there probably was) it wasn't enough for me to notice or care.

There's definitely an apples vs. oranges going on when talking bigger tires on electric vs. gas.
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Unread 07-16-2019, 11:04 PM   #18
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Default Re: What's the downside to bigger tires?

Quote:
Originally Posted by scottyb View Post
It sounds like you have an electric cart. As you probably read the big tires reduce torque by the same amount they increase height. A 22" tire is 22% taller than stock. The first step towards regaining lost torque from bigger tires is a bigger speed control which will increase the amount of amperage the motor can draw from the battery pack when it is under load. This enables the motor to make more torque. Almost all stock motors can make more torque than the stock controller allows, some cam make as much as 30-35% more. So you can actually recover the tire size increase loss and gain a bit.
Read more here > https://www.cartsunlimited.net/upgrade-suggestions.html
Yes cart is electric 48V with 3yr old Trojan T185s. I was thinking of adding a 400a Alltrax ( or equivalent brand/type) controller to try and get back some of the torque. i really don't want to change motor and all other components as cart is spent 99% of the time cruising flat streets in neighborhood. We do go to camp in north Louisiana from time to time where terrain is a little steeper. Right now im cruising at average of 14mph so a little more speed would be nice but i want to make sure and not jeopardize my motor or anything else.
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Unread 07-23-2019, 05:08 PM   #19
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Default Re: What's the downside to bigger tires?

Switching to larger cables possibly add some torque, even a little?


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Unread 07-23-2019, 08:47 PM   #20
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Default Re: What's the downside to bigger tires?

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Switching to larger cables possibly add some torque, even a little?


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The science says yes, and on other forums CC owners said it was noticeable. Not huge, but noticeable. I upgraded all my #6 to #2 for under 65 dollars custom made from aa EBay guy in Michigan

I did the other upgrades so I canít tell you your answer.
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