Red,white,and black receiver wires.

[toyotatrucks83]

I've been setting up my rigs electronics and I found when running a bec you remove the red wire from the connector that plugs into the receiver from the ESC. I understand why this is done. I'm wondering if you can also remove the black wire? Is the black wire needed so the signal will still work on the white wire?

[Duuuuuuuude]

Sometimes, but I think that in order to keep glitching to a minimum everything needs to share a common ground.

[Meatwad]

Originally Posted by Duuuuuuuude

Sometimes, but I think that in order to keep glitching to a minimum everything needs to share a common ground.

X2. A common ground definitely helps.

[DiggyStyle]

Originally Posted by Duuuuuuuude

Sometimes, but I think that in order to keep glitching to a minimum everything needs to share a common ground.

X3 You don't want to remove the ground wire from the equation. Then you're asking for a whole new set of problems.

[toyotatrucks83]

Let see if I can discribe what I'm wanting to do with out any pictures or wiring diagrams. This should be interesting.....
I'd like to run an ESC, steering servo, and two winch servos off the same receiver. I don't think one cheap bec will handle the 3 servos. (6volt, 3amp) So I was going to run a regular external bec for the ESC and steering servo. Then I would run the second bec straight to the winch servos which would mean I'd need the red and black wires to not go to the receiver but the white wire to go to the receiver for signal. There is a chance all 3 servos maybe running at the same time and that is why I feel one 3amp bec may not handle it. Maybe one with 5 amp rating? All the servos would be in the 200in/oz range so I'm expecting big draw. Also I worry my receiver might have issues running that many amps through it.
Thoughts?

[toyotatrucks83]

I drew a picture. Blue is the signal wire being that I can not draw a white line on white paper.

[Duuuuuuuude]

I keep thinking that they all need to share a ground at the rx.

[toyotatrucks83]

Duuuuuuuuude you may be right.

[wantAsummit]

Anything that is using a signal from the receiver should probably have the same ground potential as the receiver. You may find that it works OK without, but if you are going through all the trouble to wire it up you might as well use the best practice. I would hate to see one of your winches start running when your steering gets into a bind.

[Charlie-III]

Originally Posted by wantAsummit

Anything that is using a signal from the receiver should probably have the same ground potential as the receiver. You may find that it works OK without, but if you are going through all the trouble to wire it up you might as well use the best practice. I would hate to see one of your winches start running when your steering gets into a bind.

True, a lot depends on your radio.

In general, Futaba's seem to be fine with separate grounds (black or brown wires) while Spektrum's seem to have more issues. Thus, if you have a Spektrum I would suggest all black or brown wires go back to the RX (either separately or shared with the battery connection).

[toyotatrucks83]

Good to know Charlie. I'm running cheap stuff.
Flysky FS-GT3B with the hack for more channels.
Flysky 6 channel receiver.
Cheap servos. I haven't bought these yet but the Solar Servos are looking pretty good.