R/C Tech Forums - Electronics issue

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- Radio and Electronics (https://www.rctech.net/forum/radio-electronics-137/)

- - Electronics issue (https://www.rctech.net/forum/radio-electronics/1071500-electronics-issue.html)

Bry195

08-27-2020 09:12 PM

Quote:

Originally Posted by sacmiata (Post 15682558)

Found this out there as well as an option to trick your ESC into working with a reversed setup and sensored motors

https://teampowerproducts.com/blogs/...ushless-motors

well this seems to support an argument that i had about reversing direction. it appears that it is possible to reverse direction and in the exact same method I postulated as possible. so either the back emf does come in correctly in reverse or its not used in a sensored application. seems like it would be easy enough to diagram the rising and falling edges of a coil versus sensor arrangement.

GB_TimD

09-04-2020 02:51 PM

Where to learn more about electronic ?

andreas78

09-05-2020 08:49 AM

Quote:

Originally Posted by Roelof (Post 15682009)

Again, if it is sensored no way you can swap cables unless you want to burn the whole thing

Well, to be precise, it is possible to swap two wires, but you also have to swap two wires of the sensor cable. After that, the timing of the sensor board has to be adjusted accordingly.
1) switch motor cables B and C
2) switch Hall sensor A and Hall sensor C which is #2 and #4 on the sensor cable (if you have a ROAR certified cable)
3) adjust the timing of your sensor board which might not be possible without doing some modification.

Quote:

Originally Posted by Baha x (Post 15681892)

My last option is to pull the tranny apart and put the motor on the other side.

If you mean putting the motor and the main gear to the other side, don't bother, that won't change the rotating direction of the wheels.
Andi

the rc guy

09-05-2020 09:25 AM

here GB..
Electric RC info, how-tos and such - TJinTech

tamiya wrc

10-23-2020 11:36 AM

Hello!

I am not expert for electronic components, so I have next question. I decided to place a JR 2 lead on/off switch between receiver and cooling fan for brushless motor. It is these OK, because I do not want to burn out something? In summer time is cooling of brushless motor needed but in the winter time the cooling is not necessary so instead of disconnecting plugs out of the receiver I decided to place on/off switch.

On/off switch:
https://hobbyking.com/en_us/2-wire-r...en_us_products

Thank you.

GerryH

10-23-2020 05:39 PM

No problem whatsoever with using a switch inline for a motor cooling fan.

Roelof

10-24-2020 01:50 AM

But why not let the fan spin?

tamiya wrc

10-24-2020 04:00 AM

I have installed heatsink with fan, so I think that the fan is not needed in wide open tracks where is not so much acceleration of brushless motor and the motor is not heat so much, so maybe if I switch the fan off I will save some energy for racing.

Roelof

10-24-2020 04:12 AM

The fan is not even taking 1% of the energy the motor draws, you will not save a thing.

gigaplex

10-29-2020 03:04 PM

Quote:

Originally Posted by Pedmar007 (Post 15682488)

Don't ALL known brand escs have the ability for motor direction change to normal or reverse?

No, some of my Hobbywing ESCs don't support it. My LRP doesn't either.

Quote:

Originally Posted by Pedmar007 (Post 15682488)

No way that sanwa radio doesn't have the option to change orientation of steering or throttle. All rtr $40 radios has the option to reverse directions for steering and throttle, so no way that a $300+ radio wouldn't.

Reversing the channel on the radio doesn't change the motor direction on a sensored ESC. The calibration phase will determine whether a high or low signal is throttle.

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