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Old 08-28-2015, 12:00 AM   #1
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Join Date: Aug 2015
Location: Seattle
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Default Newb with Sand Scorcher finally running, slight meltdown

Hey guys. So I put about 1,000 man hours building this Tamiya Sand Scorcher kit. After about the 5th run I noticed a melting plastic or maybe a hot electronics smell and see that the clear plastic case over the motor has melted some. When I said the 5th run I mean I run through a 2000mah Lipo battery counting as one run. I only have 2 batteries, exactly the same, onyx 2000. So this would have been my 5th and 6th run on the 3rd day. I do have the black can motor upgrade. I am pretty much running balls out the whole time until she shuts down. It just seems like I should be and it should be able to take it? I do have a cutoff esc. Any thoughts?
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Old 08-29-2015, 12:12 AM   #2
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Join Date: Oct 2013
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Default Re: Newb with Sand Scorcher finally running, slight meltdown

I burnt up a tamiya sport tuned motor in my lunchbox after running it through only 2 packs. I was running a 4200 mah and it would run for over 30 minutes on 1 pack. It would just get hot from running for so long. I upgraded to an HPI 15 turn that has an internal fan and I added an external heat sink and haven't had any problems since.
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Old 08-29-2015, 12:41 PM   #3
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Default Re: Newb with Sand Scorcher finally running, slight meltdown

Quote:
Originally Posted by wrekd View Post
Hey guys. So I put about 1,000 man hours building this Tamiya Sand Scorcher kit. After about the 5th run I noticed a melting plastic or maybe a hot electronics smell and see that the clear plastic case over the motor has melted some. When I said the 5th run I mean I run through a 2000mah Lipo battery counting as one run. I only have 2 batteries, exactly the same, onyx 2000. So this would have been my 5th and 6th run on the 3rd day. I do have the black can motor upgrade. I am pretty much running balls out the whole time until she shuts down. It just seems like I should be and it should be able to take it? I do have a cutoff esc. Any thoughts?
over the motor or on the motor?
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Old 09-25-2015, 05:20 AM   #4
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Join Date: Feb 2015
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Default Re: Newb with Sand Scorcher finally running, slight meltdown

On the Sand Scorcher the motor is sealed so the heat has no where to go. I've only run mine for a few minutes at a time, but haven't experienced any heat issues.
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Old 09-25-2015, 01:53 PM   #5
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Join Date: Nov 2007
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Default Re: Newb with Sand Scorcher finally running, slight meltdown

Run it with the cover off. Back in the 80's, they ran mechanical speed controls. The had a ceramic heat resistor/heat sink that was outside of that cover. You have zero air flow over the esc, that's my guess as to where the heat is being generated.

Last edited by Hotrodvw; 09-25-2015 at 01:57 PM.
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