Hobbywing electronic speed control

[RobXjcoupe]

I’ve bought a couple of these speed controls (for a couple of old tamiya r/c cars) which work as they should but annoyingly you need to reverse the servo operation via the transmitter to operate correctly. Bit of a problem when my transmitter doesn’t haven’t servo reverse on it. My stuff is old acoms techniplus. Other than buy another transmitter can the power wires going into the receiver be reversed to rectify this? I haven’t tried yet as I don’t want to pop the circuit board, if it’s a bad idea. Just wondering if that’s a possible fix?

[AshVX220]

You could probably test this without popping open the servo, just try and reverse the connectors somehow (are there any bare wires that can be spliced to the opposite connection to just conduct a quick test?).

[Jetblackonetenth]

you can buy a lead to do the job

https://hobbyking.com/en_us/turnigytm-servo-signal...

don't think reversing wires works

[RobXjcoupe]

AshVX220 said:

You could probably test this without popping open the servo, just try and reverse the connectors somehow (are there any bare wires that can be spliced to the opposite connection to just conduct a quick test?).

I had thought of that but a bit hesitant in case the reverse polarity blew the receiver. The steering servo could be reversed by swapping the wiring around but the electronic speed control supplies the power to the receiver could those wires be polarity swapped?

[clockworks]

Reverse the wires going to the potentiometer in the transmitter


edit: if you want to use the transmitter with other models too, fit a reverse switch. A DPDT microswitch and a few bits or wire should do the trick

Edited by clockworks on Thursday 14th March 18:45

[RobXjcoupe]

Thanks for the replies , looking at the transmitter I could simply unscrew the control sticks and rotate 180 degrees for a quick fix.

[RobXjcoupe]

Wires behind the transmitter sticks were not long enough to rotate so I bought a turnigy servo reverse patch lead and it did the trick perfectly. Old school acoms units now working perfectly with new hobbywing speed control

[Revol]

If it's the throttle that needs reversing and if you're using a brushed motor (only 2 wires going to it) then simply swap the polarity of the motor.
A change in speed controller shouldn't effect the steering.

[RobXjcoupe]

Revol said:

If it's the throttle that needs reversing and if you're using a brushed motor (only 2 wires going to it) then simply swap the polarity of the motor.
A change in speed controller shouldn't effect the steering.

Unfortunately that doesn’t work. Plugged straight into the receiver, the forward motor output is pulling the stick back. If you swap the output leads to the motor effectively the motor runs the correct way but the speed control is operating in reverse and only gives 50% power in reverse. Anyway I bought a little plug in lead to reverse the transmitter signal into the speed control and it works correctly now