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Old 07-29-2004, 01:44 PM   #1
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Default Tekin 411P ESC Getting Hot

When using a stock or mold modified motor, my Tekin 411P stays cool enough not to even need heat sinks. But when I hooked up an old Trinity Champion Series 11T motor, the ESC gets hot enough to burn me. My brakes even shut down towards the end of one run. They came back after a few seconds of not running.

I've tried using the "torque" adjustment to slow down peak current delivery and while the motor and battery are barely warm, the ESC's heat sinks are still blazing hot. Or does that torque adjustment adjust frequency?

Anyway, would adding a 4700uF power cap to the battery leads help? Perhaps a schottky diode (since the brakes once even got hot enough to shut down)? Or is something wrong with the 411P? It has an on-resistance of 0.0025ohm and is supposed to have no motor limit.
Thanks in advance.
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Old 07-29-2004, 05:04 PM   #2
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the torque adjustment will limit how much amperage is sent to the motor. This ESC was designed years ago and when they said "no motor limit" it probably fit with the times but they would still get hot even with the included heatsinks.
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Old 07-29-2004, 08:46 PM   #3
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Originally posted by Matt Howard-"This ESC was designed years ago and when they said "no motor limit" it probably fit with the times but they would still get hot even with the included heatsinks.


It's funny that the same thing has been said about other Tekin ESCs (G-9, G-12cIII and G-10) and they're still kicking butt today. Even though TeamTekin has recently started making G-10 Pros they are of the same design as the first batch in 1999. Does it fit the times as well?
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Old 07-29-2004, 08:51 PM   #4
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actually yes, I still own a couple of the G-10's and if I ran anything lower than a 10 turn in my touring cars they would shut down. don't get my wrong, I loved all my tekin ESC's, that's all I ever ran, but they would shut down on me.
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Old 07-29-2004, 08:56 PM   #5
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Did you ever use the "Pro" version or just the original?
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Old 07-29-2004, 09:04 PM   #6
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I was sponsored by Tekin at the time and I tried both the regular, pro, and the pro type with the little input plug on the top.
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Old 07-29-2004, 09:11 PM   #7
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The Pro that I have has the data port. I've never had any problems with it shutting down. It can get really warm with strong modifieds, but I've never had any problems with it. Did you have good success with Tekin products? What do you run now? Thanks!
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Old 07-30-2004, 02:46 AM   #8
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Quote:
Originally posted by tmeeks
The Pro that I have has the data port. I've never had any problems with it shutting down. It can get really warm with strong modifieds, but I've never had any problems with it. Did you have good success with Tekin products? What do you run now? Thanks!
I always liked all tekin products from their receivers, chargers and ESC's. I'm currently running LRP quantums in all my cars.
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Old 07-30-2004, 06:42 AM   #9
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Yeah... those Tekins are nice... so, anyway - Power Capacitors are supposed to reduce FET operating temperatures by as much as 15 F. I'm sure the 411P already has a stiffening power cap inside, will adding a 4700uF cap help? Have any of you Tekin guys used one? What about a schottky diode?
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Old 07-30-2004, 06:54 AM   #10
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With all Tekin ESCs everything is internal. All of mine have capacitors built-in. The G-10 Pro is my newest one (4 years old and still awesome) and it has a surface mount type capacitor instead of the usual canister shape. It also has a special patented circuit that eliminates the need for a Schottky diode. Previous designs (G-10, G-12c series, G-9, etc.) had a built-in 32 amp diode.
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Old 07-30-2004, 07:00 AM   #11
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Ok, well then I guess the question is - could I potentially hurt the ESC if I try a diode and cap? I just ordered some diodes, 4700uF caps and 10,000uF caps.
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Old 07-30-2004, 07:21 AM   #12
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In all of my Tekin manuals it is stated that adding a Schottky diode will not hurt the ESC, but can slow it down slightly. I'm not sure what the end result would be by adding a power capacitor. I was told by Team Tekin that Tekin ESCs have a unique circuitry and do not require an external capacitor. You never know until you try. Good luck!
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Old 07-30-2004, 07:42 AM   #13
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Well I'm sure they already have some on-board filters to help smooth out the power supply, but size limitations as well as concerns about weight prevents them from using large cans. I'll keep you guys posted about how the caps affect my overheating situation. They should be here in 3-5 days.
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