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WVB · 02-20-2009, 04:22 PM

Ok I am using an older Futaba 3PJ PCM radio w/ a MM, BEC and trying to use the 3rd channel to no avail. The way I had it before dig was as follows:

Steering channel 1 on RX
MM channel 2 on RX
BEC on channel 3 on RX
B/C empty

When trying to get the 3rd channel to work I would imagine it as follows:

Steering channel 1 on RX
MM Channel 2 on RX
Dig channel 3 on RX
BEC on B/C

But for what ever reason I can not get anything to work with the 3rd servo plugged in..? I did try switching the BEC and 3rd Servo around to no avail either..?

I have the BEC wired as followed:

ErichF · 02-20-2009, 06:11 PM

Try getting a small Y-adapter to tie in your BEC on the Aux channel along with your dig servo. The power from the BEC will backfeed through the Y cord into the receiver to power it and the steering servo.

Your dig servo isn't an old Airtronics servo, by chance?

whoodie · 02-20-2009, 06:29 PM

You need to take the signal wire (orange) out of the BEC connector. The receiver thinks that you are in DSC mode if you have all three wires connected.

ErichF · 02-20-2009, 06:42 PM

Quote:

Originally Posted by whoodie

You need to take the signal wire (orange) out of the BEC connector. The receiver thinks that you are in DSC mode if you have all three wires connected.

Agree...good catch!

P1choco · 02-20-2009, 07:53 PM

Wtf. Would this eliminate any glitching problems by removing the orange wire? After connecting the CC bec I had some glitching issues that I didn't have before.

chrisjlittle · 02-20-2009, 08:51 PM

Quote:

Originally Posted by SdArcher

Wtf. Would this eliminate any glitching problems by removing the orange wire? After connecting the CC bec I had some glitching issues that I didn't have before.

I had thought that problem only existed with early model BEC's and spectrum receivers, but castle had fixed the problem. Matter of fact, I haven't pulled the signal wire on any of my BEC's in a long time and have had no problems with spectrum surface and air receivers and futaba 2.4ghz surface receivers.

WVB, make sure the dig servo you're using isn't bad. I've seen bad servos do some strange things. Also, if you're using really high torque servos for both steering and dig you may be causing problems with the receiver. If that's the case, try y-harnessing power to the servos and power your receiver off the ESC's internal BEC. Lastly, make sure none of your plugs are in the reciver backwards. No, I don't think you're stupid, but I know I've missed that kind of thing before.

WVB · 02-20-2009, 10:50 PM

No, its a hitec

Quote:

Originally Posted by ErichF

Your dig servo isn't an old Airtronics servo, by chance?

Does this only happen when utilizing all three channels..? Never had to do this before with just the steering servo and esc plugged in...

Quote:

Originally Posted by whoodie

You need to take the signal wire (orange) out of the BEC connector. The receiver thinks that you are in DSC mode if you have all three wires connected.

Dig servo is good... And nothing works if the plugs are in backwards...

Quote:

Originally Posted by chrisjlittle

WVB, make sure the dig servo you're using isn't bad. I've seen bad servos do some strange things. Also, if you're using really high torque servos for both steering and dig you may be causing problems with the receiver. If that's the case, try y-harnessing power to the servos and power your receiver off the ESC's internal BEC. Lastly, make sure none of your plugs are in the reciver backwards. No, I don't think you're stupid, but I know I've missed that kind of thing before.

I will try this Y-Harness or just removing the orange wire from the BEC going to fix this issue..?

Thanks again..!

P1choco · 02-20-2009, 10:53 PM

I am running two high torque servos, both of them are good in my setup without using the CC BEC and when using a different rx. If I y harness the servos, will they still be getting full voltage through the CC BEC or will I have to program the bec to output more juice? Also, if I did that, how would my steering and dig get the proper signal? Trying to wrap my head around this. Do you happen to have a wiring diagram?

chrisjlittle · 02-20-2009, 11:04 PM

You can try removing the orange wire, but I don't think its going to do anything. If you y harness power to the servos the orange wire can't get to the receiver so it can't matter, it'll be dead open. :EDIT: I just thought that out and it's not true. So scratch that.
Don't discount the bad servo idea. I have a 5985 that causes a bad glitch on the throttle channel all the time, regardless of receiver or what channel it's plugged in to. It even does it in my revo, where the throttle is another hitec servo. I can't explain it, but the problem only ever happens with that servo plugged in. I know that's not the same issue, but I've seen bad servos do other wierd stuff too.

P1choco · 02-21-2009, 10:04 AM

Sorry for the slight hijack, but I got my problems worked out. Thanks for the tips.

WVB · 02-28-2009, 09:35 AM

I really doubt the bad servo issue. I plugged it into other ports and it worked fine...

Castle finally called me back and recommended the y-harness. You can cut the orange wire but then you can not use it with castle software...

Thx to all who have helped me out - thats what this board is all about..!

02-20-2009, 04:22 PM	#1
WVB Quarry Creeper Join Date: Aug 2007 Location: Amarillo, TX Posts: 486	Mamba Max, BEC, Futaba 3rd Channel... Ok I am using an older Futaba 3PJ PCM radio w/ a MM, BEC and trying to use the 3rd channel to no avail. The way I had it before dig was as follows: Steering channel 1 on RX MM channel 2 on RX BEC on channel 3 on RX B/C empty When trying to get the 3rd channel to work I would imagine it as follows: Steering channel 1 on RX MM Channel 2 on RX Dig channel 3 on RX BEC on B/C But for what ever reason I can not get anything to work with the 3rd servo plugged in..? I did try switching the BEC and 3rd Servo around to no avail either..? I have the BEC wired as followed: Last edited by WVB; 02-20-2009 at 04:51 PM.

02-20-2009, 11:04 PM	#9
chrisjlittle RCC Addict Join Date: Nov 2007 Location: BV Posts: 1,170	You can try removing the orange wire, but I don't think its going to do anything. If you y harness power to the servos the orange wire can't get to the receiver so it can't matter, it'll be dead open. :EDIT: I just thought that out and it's not true. So scratch that. Don't discount the bad servo idea. I have a 5985 that causes a bad glitch on the throttle channel all the time, regardless of receiver or what channel it's plugged in to. It even does it in my revo, where the throttle is another hitec servo. I can't explain it, but the problem only ever happens with that servo plugged in. I know that's not the same issue, but I've seen bad servos do other wierd stuff too. Last edited by chrisjlittle; 02-21-2009 at 12:03 AM.

02-20-2009, 06:11 PM	#2
ErichF Pebble Pounder Join Date: Feb 2009 Location: Tampa Posts: 107	Try getting a small Y-adapter to tie in your BEC on the Aux channel along with your dig servo. The power from the BEC will backfeed through the Y cord into the receiver to power it and the steering servo. Your dig servo isn't an old Airtronics servo, by chance?

02-20-2009, 06:29 PM	#3
whoodie Moderator Join Date: Jul 2007 Location: Texas baby! Posts: 1,498	You need to take the signal wire (orange) out of the BEC connector. The receiver thinks that you are in DSC mode if you have all three wires connected.

02-20-2009, 07:53 PM	#5
P1choco Quarry Creeper Join Date: Jan 2009 Location: El Cajon San Diego Posts: 417	Wtf. Would this eliminate any glitching problems by removing the orange wire? After connecting the CC bec I had some glitching issues that I didn't have before.

02-20-2009, 10:53 PM	#8
P1choco Quarry Creeper Join Date: Jan 2009 Location: El Cajon San Diego Posts: 417	I am running two high torque servos, both of them are good in my setup without using the CC BEC and when using a different rx. If I y harness the servos, will they still be getting full voltage through the CC BEC or will I have to program the bec to output more juice? Also, if I did that, how would my steering and dig get the proper signal? Trying to wrap my head around this. Do you happen to have a wiring diagram?

02-21-2009, 10:04 AM	#10
P1choco Quarry Creeper Join Date: Jan 2009 Location: El Cajon San Diego Posts: 417	Sorry for the slight hijack, but I got my problems worked out. Thanks for the tips.

02-28-2009, 09:35 AM	#11
WVB Quarry Creeper Join Date: Aug 2007 Location: Amarillo, TX Posts: 486	I really doubt the bad servo issue. I plugged it into other ports and it worked fine... Castle finally called me back and recommended the y-harness. You can cut the orange wire but then you can not use it with castle software... Thx to all who have helped me out - thats what this board is all about..!

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