Tekin RS overheating &shutting down

[realsickclown]

Ok I am wondering what would start this? The only thing new is the HH 27t torquemaster sport ,stock futaba steering servo (replacement from axial) geared 80/20 (per JohnHolmes). So am I geared to high causing the overheating? Do I need a bec in this current set up? I tried gearing down 80/18 same problem. So I'm going to pull the electronics out and see if it'still in line. Can a messy solder job cause heating issues,nothing is touching but I'm starting to wonder if they aren't arcing over. When I say shutting off this is happening inside with air conditioning with in about 5-10min.

[rcmedic]

A bec will drop temps in a tekin esc dramatically.

[Cale262]

My Tekin ESC (FX-R) in my PS Wraith was doing the same thing, overheating and shutting down...Hasn't happened once since installing the ccBEC.

[rcmedic]

Originally Posted by Cale262

My Tekin ESC (FX-R) in my PS Wraith was doing the same thing, overheating and shutting down...Hasn't happened once since installing the ccBEC.

You should've know you needed a bec when you bought that Savox

[HDMM]

Originally Posted by rcmedic

You should've know you needed a bec when you bought that Savox

+1

Savox = External BEC

[realsickclown]

Looks like I'll be rebuilding my rig this weekend. Guess I'm going to miss this event as well

[realsickclown]

Originally Posted by rcmedic

You should've know you needed a bec when you bought that Savox

Does your body still fit with everything on top like that?

[realsickclown]

Would lowering the current limiter help as well? Right now it's wide open, if I am understanding it correctly, lowering the limiter will help run cooler and not affect over all speed & performance, right? I am about to start pulling it apart, undo all the solder and clean everything up and start over and try to relocate the battery and the electronics. there's still time to try and make the event. I'll be back

[realsickclown]

Ok so I got the BEC installed just want to check if the esc switch is supposed to still control the esc only now? Is it a bad idea to wire the switch up into the bec power wires?

[rcmedic]

Don't ever use that switch. Cut it off and solder the wires together.

[Charlie-III]

Originally Posted by realsickclown

Ok so I got the BEC installed just want to check if the esc switch is supposed to still control the esc only now? Is it a bad idea to wire the switch up into the bec power wires?

The ESC switch is only connected to the ESC, so you're correct, it won't affect the BEC since it has seperate power wires.
Ditch the ESC switch, just unplug the battery when done. Partly because neither the BEC or ESC input control the LVC, thus you can overdraw the battery & kill it.

Originally Posted by rcmedic

Don't ever use that switch. Cut it off and solder the wires together.

+1, then insulate the connection (tape, shrink tubing, etc.)

[Meatwad]

+2 on chopping and shorting the switch. Nothing rc should ever have a switch besides your radio IMO. It will fail at the most oppurtune time to wreck your sanity.

[realsickclown]

Originally Posted by Charlie-III

The ESC switch is only connected to the ESC, so you're correct, it won't affect the BEC since it has seperate power wires.
Ditch the ESC switch, just unplug the battery when done. Partly because neither the BEC or ESC input control the LVC, thus you can overdraw the battery & kill it.


+1, then insulate the connection (tape, shrink tubing, etc.)

So what your saying is the lvc in the esc is inactive now with the bec? That don't sound right

[Charlie-III]

Originally Posted by realsickclown

So what your saying is the lvc in the esc is inactive now with the bec? That don't sound right

The LVC cuts ESC output power, has no clue to ANYTHING on the input side (before the ESC/LVC circuit).
The external BEC is wired in before the ESC, thus no LVC control.

Make sense now??

[realsickclown]

Well I'm not sure which was the fix but the Tekin is not going into thermal protection now and seems to be operating at cooler temps. So it was either the bec or moving the esc but it did the job.

[rcmedic]

The bec's in Tekin esc's are weak.

[Ty@Tekin]

Any stock internal BEC is going to weaken a bit if you run 3S and even more so with a power hungry servo. I run 2S in my rigs and it's plenty of wheelspeed with brushless and have my servo's wired straight to the battery for power. If you overload the BEC it causes lots of internal heat and soaks the PCB, which is probably why you thermalled so many times.

[z50king]

Originally Posted by realsickclown

Would lowering the current limiter help as well? Right now it's wide open, if I am understanding it correctly, lowering the limiter will help run cooler and not affect over all speed & performance, right?

yes, it will lower the initial amperage put out through the system when you are accelerating. What motor are you running? It's meant to help low turn systems accelerate with more control. if you are running a high turn motor, you aren't going to notice a difference and the motor can't take the amps anyway so it won't help keep temps down because it shouldn't be getting hot anyway

[realsickclown]

My motor is HH torquemaster sport 27T , geared at 84/18. My heat issue is almost fixed, I drove a good solid 20min last night and I noticed the esc was just starting to get warmed up and that was in the rocks creeping. So I'm very pleased with the motor&esc