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Unread 11-11-2008, 01:06 PM   #1
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Default Generic Questions

Hello, a newb here and have a lot of questions of definitions like:

Lifted
Series Motors
Controllers
PDS
Etc…

I think I know what most of it means like Lifted means raising the ground clearance for bigger tires.

But things like Controllers and various motors are not quite making sense to this ole electrical engineer. For example upgrading from a stock 230 amp controller to a say 400 amps just is not clicking because the current to the motor is determined by the voltage applied and the impedance of the motor. For example if you have a 48 volt motor rated at 3 HP, the most current the motor can draw from 48 volts is 46 amps. The motor has 1 ohm fixed impedance. There is no way to force more current through the motor unless you step up the voltage from 48 volts.

So I guess what I am asking is there a web site that explains what is really going on so I can wrap my brain around it?
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Unread 04-14-2009, 09:42 PM   #2
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Default Re: Generic Questions

Quote:
Originally Posted by dereckbc View Post
So I guess what I am asking is there a web site that explains what is really going on so I can wrap my brain around it?
Nope. Leave your training behind and build a monster cart, then you will understand better.
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Unread 04-14-2009, 09:45 PM   #3
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Location: VA
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Default Re: Generic Questions

Quote:
Originally Posted by dereckbc View Post
Hello, a newb here and have a lot of questions of definitions like:

Lifted
Series Motors
Controllers
PDS
Etc…

I think I know what most of it means like Lifted means raising the ground clearance for bigger tires.

But things like Controllers and various motors are not quite making sense to this ole electrical engineer. For example upgrading from a stock 230 amp controller to a say 400 amps just is not clicking because the current to the motor is determined by the voltage applied and the impedance of the motor. For example if you have a 48 volt motor rated at 3 HP, the most current the motor can draw from 48 volts is 46 amps. The motor has 1 ohm fixed impedance. There is no way to force more current through the motor unless you step up the voltage from 48 volts.

So I guess what I am asking is there a web site that explains what is really going on so I can wrap my brain around it?
Yes I would also like to know some of these answers if you get them .Thank you Big k
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Unread 04-14-2009, 09:56 PM   #4
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Default Re: Generic Questions

sometimes one can over think stuff, my dad said "son" i can tell you not to pee on a electric fence! but until you try it you won't know what i mean. sometimes you just gotta go for it
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Unread 04-14-2009, 10:42 PM   #5
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Location: Southern California
Posts: 64,069
Default Re: Generic Questions

My wife walked by and read this over my shoulder.....
Generic Questions

--------------------------------------------------------------------------------

Hello, a newb here and have a lot of questions of definitions like:

Lifted
Series Motors
Controllers
PDS
Etc…

And She said "Boy that guys a real newbie!" ....
Well ,she doesn't know what the choke is on the gas cart

But seriously it takes time to grasp all the different systems and how they work .....I talked with an electrical engineer yesterday who told me an ITS throttle impulse sender (ezgo)would only work on an AC motor so why is working on a DC? I told he was way over thinking this stuff and I wouldn't know. I just know how to make em go I know how to ride a horse not how the insides work and Lots of people do just fine driving cars without a clue of what's under the hood........ Well just keep it simple stupid certainly has its' place at times.....Like I said it takes years to grasp all of this stuff and if we told you all of it you wouldn't grasp it
Have some fun.....it is just a golf cart
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Unread 04-14-2009, 11:11 PM   #6
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Smile Re: Generic Questions

Quote:
Originally Posted by pizzamaker View Post
sometimes one can over think stuff, my dad said "son" i can tell you not to pee on a electric fence! but until you try it you won't know what i mean. sometimes you just gotta go for it
Right to the point...
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