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Dual brushless esc wiring - 2/10/2013 2:47 AM   
jrowles91


 

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From: Litchfield Park, AZ, USA
Status: offline 		I've been reading some wiring questions and people are saying to cut the red wire on the y harness coming from 1 esc thus disabling that esc's BEC to not overload the receiver or servo. Makes it so your cutting a wire on a $3 y harness instead of a $150 esc. Makes sense. What doesn't make sense to me is, if doing so, wouldn't that be basically disabling the entire esc from the diagram?

I'm building a truck with 2 esc, 2 motors, 1 receiver, 1 servo, 2 batteries. I'd like 1 switch wired to both esc's so when I turn the truck on, everything powers up exactly the same. Can anyone give me clarification or a diagram?

BTW I already have plenty of single brushless systems in multiple vehicles so I don't need or want that "1 system is plenty".


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RE: Dual brushless esc wiring - 2/10/2013 3:23 AM   
phmaximus



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From: Adelaideaustralia, AUSTRALIA
Status: offline 		the problem is u cant have two BEC's working on the same curcit.
a rc car only needs 1 BEC, so u dissable one of them
it will still have a functioning BEC from the one that has not been disabed to run the servos and reciever

I dont recommend cuting the wire...

All u need to do back out the red wire from the connector on one of the ESC. then tape it up.


think of the BEC as a power point for the servos and receiver, it only needs to be pluged into one powerpoint. and u disable the other power point so that the power points are not connected anymore


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RE: Dual brushless esc wiring - 2/10/2013 3:27 AM   
jrowles91


 

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Status: offline 		Ok got it. I guess I just figured that if I disabled the red wire I would disable esc function also. But, the red and black are just bec power?


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RE: Dual brushless esc wiring - 2/10/2013 3:45 AM   
phmaximus



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From: Adelaideaustralia, AUSTRALIA
Status: offline 		The red wire is power, black is a common earth ans the white is singnal wire
So we back out the red wire to disable the BEC, but we leave the earth, because its a common earth that the signal uses, and we leave the signal wire

here hope this helps



in the pic below U can see the 3 little legs that hold the terminals in the connector, all u need to do is lift the leg with a pin, and pull that wire out the back of the connector
it wont require much force once the leg is lifted up so be gental



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RE: Dual brushless esc wiring - 2/10/2013 3:48 AM   
jrowles91


 

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Status: offline 		Absolutely helps thank you!

What are your thoughts on the on/off switch?

What do you think about wiring the batteries together also so the current draw would be the same for each pack?


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RE: Dual brushless esc wiring - 2/10/2013 3:59 AM   
phmaximus



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Status: offline 		hummm on off switched... i hate them, ive had a few fail in the past years

I would problary leave them allways on, and only use the switch's only for programing.
keep them for now, but use the battery's as the switch, pluged in=on, unplug to turn off

Definatly link the batteries. u want them to be discharging equially, if they were sepperate the rear ESC battery would discharge faster, and cause a big input voltage differance from ESC to ESC.


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RE: Dual brushless esc wiring - 2/10/2013 4:04 AM   
phmaximus



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Status: offline 		u will need to make one of these...




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RE: Dual brushless esc wiring - 2/10/2013 4:08 AM   
jrowles91


 

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Status: offline 		Your the man. Answered all my questions. Keep an eye on this thread if you don't mins, I may be back with more questions! And pictures of course...


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RE: Dual brushless esc wiring - 2/10/2013 4:09 AM   
phmaximus



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Status: offline 		no worries, glad to help.

What ya building?


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RE: Dual brushless esc wiring - 2/10/2013 4:22 AM   
jrowles91


 

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From: Litchfield Park, AZ, USA
Status: offline 		Well, I don't want to say exactly what I'm building, but a friend and i are putting to a rig together to attempt to break a record. So far we have the truck completely rebuilt with new bearings, rebuilt differentials, wheels and tires and 2 Tekin RX8's.


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