Help Speed controller Postive wire gets HOT???  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Electric On-Road vehicles, race cars and more >> Help Speed controller Postive wire gets HOT???
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Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:04:00 AM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline 		Hello yall, what would cause the positive wire on the speed controller battery connecter to melt and get really hot?
       Post #: 1

RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:05:33 AM   
magnat


 

Posts: 1528
Joined: 2/20/2007
From: , AUSTRALIA
Status: offline 		Gearing and excessive run times...

Sounds like the Motor is drawing current a little too much and heating up the wire...

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:08:45 AM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline 		How do i fix that?

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:12:05 AM   
drevil



Posts: 1837
Joined: 2/8/2003
From: Dingmans Ferry, PA, USA
Status: offline 		First off what connector are you using? It's common for high powered motors to draw enough amperage to melt those junk Tamiya connectors. I'd definitely suggest going with Deans connectors.

As for the overheating problem, you'll really need to give more information about your setup. What batteries, motor, speedo, and gearing are you running? It sounds like you may need to gear down a little (smaller pinion gear).

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:13:25 AM   
thedr



Posts: 232
Joined: 5/13/2008
From: Puerto VallartaJalisco, MEXICO
Status: offline
quote:

ORIGINAL: magnat

Gearing and excessive run times...



as magnat alluded, gear the car down (smaller pinion and/or larger spur gear) and/or limiting your runtimes (don't run the car for exteneded periods of time, limit it to 10-15 minutes)

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 1:18:39 AM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline 		I am using a redcat lighting epx stock with no parts.

Should it matter what mah i am using?

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 4:58:16 AM   
slrsmokey


 

Posts: 45
Joined: 3/20/2008
From: St Joseph, MO, USA
Status: offline 		Well I had a problem similar to that last year and it turned out that the motor was drawing to much power because I was not aware that I had to solder the copaciters on my self. I thought it came all ready to run but I guess not. I went thru 2 sets of wires before I figured that out. So you might want to take a gander at ur motor and make sure. Incase u dont know the copacitors are little orange things with wires soldered to the motor oposite side of where the leads hook up. I could be completely wrong about that but ya never know. Like I said just have a gander just so u can atleast say you made sure. Well I hope I helpped and if I didnt I tried. Latta bro.

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RE: Help Speed controller Postive wire gets HOT??? - 5/10/2008 5:40:40 AM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline 		Thanks everyone for the replies, i need to check if the resistor is there, i went out and bought a speed controller at a hobby shop that is rated to 15t, compared to the stock 23t rating, still using the stock motor. Hope the speed controller works.

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       Post #: 8

RE: Help Speed controller Postive wire gets HOT??? - 5/12/2008 8:45:06 PM   
jmcvicker


 

Posts: 152
Joined: 11/26/2007
From: Coatesville, PA, USA
Status: offline 		Also, you could have binding in the pinion/spur gear location. Make sure the pinion and spur are not "tight" together but have a little play in them between the gears. A tight spur/pinion binding can lead to nasty overheating and poor performance too. If just a bit tight, it can be overheating without really noticing a drop in performance much.

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       Post #: 9

RE: Help Speed controller Postive wire gets HOT??? - 5/19/2008 7:13:44 PM   
RC-Hedgie


 

Posts: 10
Joined: 5/7/2007
From: Warrington, UNITED KINGDOM
Status: offline 		Hi,

If it is only the positive wire then it is possibly a fault with the wire, maybe broken strands, or a faulty connector. Has the wire been bent really tight, twisted or trapped? Changing the wire out could be a quick cheap fix.

M

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       Post #: 10

RE: Help Speed controller Postive wire gets HOT??? - 5/21/2008 12:05:57 PM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline 		Thanks yall for the replies, well I am no longer using the factory speed controller on this car, but i the aftermarket tazer 15t is starting to do the same thing with the negative wire. I guess its common.

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       Post #: 11

RE: Help Speed controller Postive wire gets HOT??? - 5/21/2008 2:14:07 PM   
TIGER76



Posts: 1824
Joined: 8/28/2006
From: Bristol, UNITED KINGDOM
Status: offline 		which motor are u running on that 15t esc m8? also are you using deans connectors cos the tamiya bullets ones wont last long on a good 15t motor as they melt together also post up your gearing so we can see if its overgeared which will cause alot of heat too

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       Post #: 12

RE: Help Speed controller Postive wire gets HOT??? - 5/21/2008 8:07:58 PM   
islandturbos


 

Posts: 52
Joined: 5/2/2008
From: , USA
Status: offline
quote:

ORIGINAL: TIGER76

which motor are u running on that 15t esc m8? also are you using deans connectors cos the tamiya bullets ones wont last long on a good 15t motor as they melt together also post up your gearing so we can see if its overgeared which will cause alot of heat too



I am using a 15t esc, with a 19t motor. I am using the stock connectors, tamiya, gearing is stock spec of a lighting EPX made by redcat racing.

Thanks

(in reply to TIGER76)
       Post #: 13

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