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Unread 02-26-2010, 08:55 PM   #11
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Default Re: Trying to understand effects of bigger controller

Chevy, #4 is all you need for all but the most extreme builds..... and a 500amp controller is not an extreme component.

ajbrown, think of the motor as needing a big surge of fuel to climb the hill. The amps stored in the batteries are the fuel. The controller is a valve that meters the amps that can go to the motor at any given time..... too small a valve and the motor has to make due with what it gets ... not all it needs. The motor Draws amps ... the controller is a valve those amps are drawn through. Hope this helps


I revisited the Alltrax recommendations for #1 and 2 wire but I and others who know more than me feel that those recommendations are a bit over the top.....
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Unread 02-26-2010, 08:55 PM   #12
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Default Re: Trying to understand effects of bigger controller

We're talking about losing speed going up hills, your cart is different than the OP's. You have a reworked motor and 500a controller. I still think 2ga is overkill unless you are pushing the controller to the max. Merely going uphill you are not going to push the cart so hard you would need 500a so I would say the motor just doesn't have the HP to carry the speed uphill.
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Unread 02-28-2010, 11:59 AM   #13
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Default Re: Trying to understand effects of bigger controller

Quote:
Originally Posted by sms-shop View Post
what size cables do you have on them ...?for that size controller you need #2 cables min...

http://www.alltraxinc.com/files/Doc1...bined-Spec.pdf
Most excellent post
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Unread 04-02-2010, 12:42 PM   #14
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Default Re: Trying to understand effects of bigger controller

My dad's stock controller died, he just bought a new Alltrax 500A and I get to use it for a couple of days. Going to do some real world tests on MY cart to determine if upgrading the stock controller is worth the money.

The cart is 02 DS with good batteries, 4 ga wires, Advanced 6-223A motor, lifted with 205/65/10 tires.

Basic tests is to compare performance of 225A versus 500A:

+ Time acceleration on level street 0 - 10, 0-20, top end (speed and time)
+ Timing from stop on decent grade uphill (same three tests)
+ Same hill, enter at 22MPH , exit at?
+ Steep Hill (For folks in The Villages, bridge over 441/27) Mostly interested in speed at top of hill

I plan on doing test twice seeing the affect of the pack at a lower SOC. I suspect this will be a larger affect than the controller upgrade itself....

Doing this for fun mostly, posting this in case someone sees a test that would have value or they are interested in.
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Unread 04-02-2010, 12:44 PM   #15
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Default Re: Trying to understand effects of bigger controller

Quote:
Originally Posted by scubabud View Post
My question would be;

Would a larger controller make me look fat?!?!?!?!?! J/K

Let the AMP's flow...
I think the 500A does appear to make me look fat, but the wife says I look the same...
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