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Posted

I have a Carson reflex wheel start transmitter and an Etronix ET0103 esc.

I had a weird problem with setting them up. No matter what I do, the high speed is in reverse, the 50% speed is forwards, and the brake will only activate in reverse...unless i switch the motor wires.

The trans and the esc can both be reversed. So Ive tried all the combinations with both in forwards/ both in reverse/ transmitter in forwards with esc in reverse, and vice versa. None of these options result in the car going forwards at top speed and brake working correctly. One of these combos actually results in the wheels going constantly in reverse and forward doesn’t work at all.

The only way ive managed to get it correct is with the esc in forwards, the transmitter in forwards (i think), and the motor wires reverse yellow to green.

Even if the motor is wired wrong, it makes no sense that i can switch the motor wires, but cant correct things by reversing the transmitter or the esc!

Baffled!

Posted

What car is it? If it's a TT-01 (or similar shaft car) it's possible to put the diffs in backwards and make the car run in reverse. Some cars (not Tamiya) use a reverse rotation motor as standard.

If reversing the wiring on the motor is the path of least resistance, that's what I'd be tempted to do.

Posted
6 minutes ago, sosidge said:

What car is it? If it's a TT-01 (or similar shaft car) it's possible to put the diffs in backwards and make the car run in reverse. Some cars (not Tamiya) use a reverse rotation motor as standard.

If reversing the wiring on the motor is the path of least resistance, that's what I'd be tempted to do.

Its a Rising Fighter, so nothing so advanced. 
Ive had to settle on switching the wires. Spent another hour messing with it this morning, and the throttle simply won’t work correctly otherwise.

It works fine, but frustrates me that it isn’t logical.

Posted

To be honest you are working with very inexpensive electronics here and the need for them to be logical is low on the priorities. They just want something that works when it gets put in a RTR car and sent out of the factory door.

Posted

If you don't want to swap the wires at the connection between esc and motor you could always just de-solder the wires from the motor and solder them back on the other way round...easier to just swap the connections though.

Posted

One thing I noticed on that ESC, is the positive motor wire is next to the negative battery wire and vice-versa. 

I'd start over with the transmitter throttle servo reversing set to reverse and see how that goes.

  • 2 years later...
Posted

I'm having the exact same issue with my new ET0103, I did the same setup like you have after a while trying different combinations etc

I noticed there isn't much braking going on unlike the TBLE-04S I had before. Did you find any fix for the issues? 

Posted

There is a possibility that the motor wires were soldered on the wrong tabs from the factory. It could happen. It doesn't actually matter on a standard RS540; the motor runs the same in forward as it does in reverse.

Set up the radio and ESC in the correct way, because that matters a lot more. 100% forward throttle on forward, brakes and then 50% reverse throttle on reverse. That's the way the electronics are supposed to work. Do this without the motor plugged in, watch the blinky lights to make sure they're doing what they're supposed to do, verify with a voltmeter attached to the ESC's motor output wires if you feel the need.

Then plug in the motor wires in whichever direction makes the car go the right way. If the colors don't line up, and that annoys you, then re-solder the wires at the motor. Don't mess with radio or ESC wiring unless you know exactly what you're doing.

Posted

Looking at this image of the ESC:

spacer.png

 

  • ESC blue = +
  • ESC yellow = -

For a standard silver can Tamiya motor:

  • Motor green = -
  • Motor yellow = +

So to correctly wire up the motor to this Etronix ET0103:

  • ESC blue -> motor yellow
  • ESC yellow -> motor green

So the motor wires do not need to be "swapped" as such, you just need to ensure that you're connecting + -> + and - --> -  :)

  • Like 1
Posted

1- When pulling the trigger (to make the car move forward) the motor should turn CCW when looking at it from the pinion side. With that simple test you can wire any ESC the right way.

2- The only caveat is if you notice very low speed in forward and very high speed in reverse then the transmitter throttle channel might be reversed; then you reverse the throttle channel and reverse the motor wires and you are done.

Whether a silver can runs the same way CCW and CW is debatable and I would disagree; but the bottom line is that there is no compelling reason to make a motor run in reverse when the 2 steps above enable you to make it run properly (CCW).

Posted
6 hours ago, Twinfan said:

Looking at this image of the ESC:

spacer.png

 

  • ESC blue = +
  • ESC yellow = -

For a standard silver can Tamiya motor:

  • Motor green = -
  • Motor yellow = +

So to correctly wire up the motor to this Etronix ET0103:

  • ESC blue -> motor yellow
  • ESC yellow -> motor green

So the motor wires do not need to be "swapped" as such, you just need to ensure that you're connecting + -> + and - --> -  :)

I fitted the ESC and didn't even notice the colour chart on the side 🤣🤣🤣 I'll have a look this weekend, been sidetracked with a cheap kyosho pureten nitro... Complete with original KR3 servos and kyosho 27mhz radio👌

Posted
On 3/6/2024 at 11:55 AM, Pylon80 said:

Whether a silver can runs the same way CCW and CW is debatable and I would disagree

Me too.  That is, I also think it's unwise to make the motor run reverse.  When testing old silver cans, running the "right way" was about 200RPM faster. Probably due to wear.  Sport tuned is timed, so few thousand RPMs faster in the right direction.   So reversing the motor isn't the best practice (unless going slower is the goal).  

 

  • Like 1
Posted
On 3/6/2024 at 3:17 PM, Twinfan said:

Looking at this image of the ESC:

spacer.png

 

  • ESC blue = +
  • ESC yellow = -

For a standard silver can Tamiya motor:

  • Motor green = -
  • Motor yellow = +

So to correctly wire up the motor to this Etronix ET0103:

  • ESC blue -> motor yellow
  • ESC yellow -> motor green

So the motor wires do not need to be "swapped" as such, you just need to ensure that you're connecting + -> + and - --> -  :)

So I've got mine wired correctly as per that diagram 

IMG_20240309_205024.jpg

Posted

BTW, these 3M clips are perfect for tidying up the wiring... Got loads at work 😂

https://www.ebay.co.uk/itm/334832713633?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=crhkujg8qxc&sssrc=4429486&ssuid=IGhgTvYPTIy&var=543994000537&widget_ver=artemis&media=COPY

IMG_20240309_205035.jpg

Posted
Just now, Twinfan said:

What problem are you still having?

I'll tell you if I have in about 45mins, away out for a quick thrash because I've not had a chance this week min

Posted

So quite literally a quick thrash... It's working perfectly, has got brake effort for sure... 

 

I almost ran into my own leg at full speed, jumped out the way and clocked the lamp post next to my fence 😂😂😂😂😂😂😂😂 ffs

IMG_20240309_210321.jpg

  • Sad 1

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