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09-09-2015, 12:27 PM | #11 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
Thanks for the advice.
Scotty, the price I gave was based on what I've seen online a few places. Maybe those were wrong. D & D doesn't put prices on their website, so it is hard to know. Still, I don't know if I want to drop $600 |
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09-22-2015, 10:30 AM | #12 | |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
Quote:
Any idea how much to turn down the CA? There is only a screw, like the CL. is there anyway to measure? The FSIP tech support guys say that even without adjustments, the motor only draws whatever it supports so even if turned all the way up, it should not cause a problem. I'm going to recheck wheel resistance/freedom and go from there. if that's not it, I guess I will order a new motor and hope it doesn't get burned up too. Thanks. |
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09-22-2015, 11:24 AM | #13 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,344
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Re: Repair or replace my motor 36V motor with 48V?
Mathematically the CL or current limit screw adjust maximum output from 350-700 amps. When tested the small pot adjustment screw rotates 3/4 of a turn or 270º which works out to 1.3 amps per degree or 150º for 195 amps.
Note each 1/4 turn is 90º = 117 amps 1/2 turn is 180º = 234 amps Use a flashlight to observe the screw position and size. Gently insert proper size tool and rotate counter clockwise until stop. DO NOT FORCE THIS SCREW Put a pencil mark where both ends of the screwdriver blade are now. This is 0º and 180º If you have a protractor mark 150º and make the adjustment to this mark. If no protractor place a mark half way between 0 and 180. Then another mark between this new mark and 180. This is 135º. Half way between 135 and 180 is 157º that's 204.75º reduced max output . |
09-22-2015, 11:27 AM | #14 | |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Repair or replace my motor 36V motor with 48V?
Quote:
Turn the CA setting all the way down and drive the cart. If the acceleration feels sluggish, like pedal down on 5th gear, turn it up a little until you feel it is adequate to your driving conditions. Edit: Just saw ScottyB post on how to add graduations to the set screw, great idea! |
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09-23-2015, 02:57 PM | #15 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
OK. I am going to try turning it down to 500 amps and then turning the CA all the way down. I will, however, need a motor to try this. My old one is in bad shape. The shop I have it in has a 48 V motor, but they no longer want to try it on there because last time we tried that, the motor started to overheat after just a few minutes and they don't want to damage the motor they have. I supposed I will have to buy one and just "hope" that I don't burn it up. BTW, I sent the controller back to FSIP, and they said it runs fine.
Any ideas how I can prevent motor damage if I buy a new motor? I've read threads about folks burning up more than one. Thanks. |
09-23-2015, 03:02 PM | #16 | |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
Quote:
What do you mean by "stalls"? Do you mean stalls as in has to work harder due to improper brakes or damaged differential? I've checked the brakes and differential and wheels are turning freely. If you don't mind, please let me know. Thanks. |
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09-23-2015, 03:52 PM | #17 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Repair or replace my motor 36V motor with 48V?
I meant stalls as in stops making forward progress.
If You press the pedal all the way down very quickly, the motor will try to draw as much current as it can, but only a fraction of that current will be used to move forward, the rest will dissipate as heat on the motor. As the motor turns, the rotating armature creates a reverse voltage at the motor (called back emf), which reduces the amount of current the motor draws. The CA adjustment will still allow the motor to use all of the current You set at the CL adjustment (if needed), but it will ramp it slowly so as the motor turns, it may not need all of that excess current and it will run cooler. |
09-23-2015, 07:11 PM | #18 |
Gone Wild
Join Date: Aug 2015
Location: summer-north,winter-south
Posts: 588
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Re: Repair or replace my motor 36V motor with 48V?
The more I read this forum, the more I know my next cart will be gas. You may want to cut your losses, and reevaluate your wants/needs.
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09-25-2015, 09:43 AM | #19 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
strike that
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09-25-2015, 09:44 AM | #20 |
Gone Wild
Join Date: Nov 2012
Posts: 379
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Re: Repair or replace my motor 36V motor with 48V?
I've been thinking the same thing. I have a bunch of $$$ invested in this one, and it seems like it is nothing but trouble.
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