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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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11-18-2019, 01:15 PM | #11 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
It put off Enough heat that I wouldn't touch it and melted the wire on top, rearward, connected to the motor.
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11-18-2019, 01:51 PM | #12 |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,941
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Re: G2 broken resistor
There is definitely something up somewhere then. Was the cart moving when the resistor melted down?
If a resistor cart isn't moving properly under load, ie. it isn't moving at all or too slowly if it is, then all of the current that would normally be dissipated via a cart's motion has to get dissipated somewhere else. Glowing hot resistors are usually where this happens. On one of my old Cushmans (resistor carts) a solenoid stuck open so all the cart powered up the second the key was switched on w/o the need for the accelerator to be pushed. The low speed resistor got red hot within seconds. That's not normal though. Those shouldn't get too hot if things are normal. |
11-18-2019, 02:12 PM | #13 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
I tried to solder it but it just rolled off. I used both regular rosen core used in electrical and the kind used to sweat copper. The resistor is made of pretty hard steel so a spot weld looks like the best bet. My wife is calling around today to try and locate a used or new one which is like finding a unicorn. Thinking with my novice understanding of what it does it seems there should be a simple repair for this thing. Replacement is obviously the right fix but im trying a repair until that unicorn shows up.
Also before I found the break I was trying to figure out why the solenoid was chattering. My original thoughts where weak batteries which I still think was a problem, but now in thinking the resistor was just jiggling around. |
11-18-2019, 02:25 PM | #14 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
Reverse is great. WOT is inconsistent. Fast then slows then fast. I've been doing very short rides knowing something is off.
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11-19-2019, 06:49 AM | #15 |
Not Yet Wild
Join Date: Aug 2019
Posts: 24
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Re: G2 broken resistor
Do I ever have a deal for you ;) where are you located? I have one off of my cart i'm big bore swapping. Willing to ship, unfortunately I'm in Canada, and I assume you're in the USA?
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11-19-2019, 11:34 AM | #16 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
Wow thats fantastic! I may have fixed it last night but might still be interested. Im in North Carolina. What I have done, I threaded the broken ends. Screwed a nut on both broken ends leaving one hanging off just a bit while the other leaving the end of the coil protruding just a bit. I was able to solder the nuts together and reinforce it with wire used from electric fence. It seems to be holding really well. Im able to hold it up from one end and it doesn't break.
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11-19-2019, 12:35 PM | #17 | |
Gone Wild
Join Date: May 2011
Location: Pittsburgh
Posts: 2,941
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Re: G2 broken resistor
Quote:
It will work. A camp neighbor once fixed his melted resister by crimping plain old copper tubing over top of the brake. It's been running like that for well over ten years now. |
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11-19-2019, 02:16 PM | #18 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
I put it on and it seems to work. Still have the solenoid chattering and loss of power. Im guessing the last two batteries I buy will fix that. The coil did get warm by the last wire but not hot enough to burn your hand.
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11-20-2019, 12:24 AM | #19 |
Not Yet Wild
Join Date: Sep 2019
Location: NC.
Posts: 19
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Re: G2 broken resistor
I do have one more question. Should the coil heat up evenly or at a particular end based on the speed?
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11-20-2019, 01:54 AM | #20 |
Gone Insane
Join Date: Oct 2016
Location: Richmond, VA
Posts: 14,214
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Re: G2 broken resistor
I would still take Atmosphere up on his offer if ya'ii agree on price. Cart might run a long time with it, and i'm sure they are hard to find used. My 2 cents.
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