how to run servo off battery
06-14-2011 | 12:48 AM
#3
06-14-2011 | 12:57 AM
#4
Tech Master
iTrader: (3)
Joined: Jul 2008
Posts: 1,465
From: Melbourne, Australia
What reciever are you using ?
If your reciever is capable of handling a higher voltage you can run an external bec straight off your battery to your reciever
If your reciever cannot handle a higher voltage the external bec can be connected straight to the servo
You will need a servo 'y' cable to run the signal wire from the reciever to the servo
Cheers
If your reciever is capable of handling a higher voltage you can run an external bec straight off your battery to your reciever
If your reciever cannot handle a higher voltage the external bec can be connected straight to the servo
You will need a servo 'y' cable to run the signal wire from the reciever to the servo
Cheers
06-14-2011 | 07:56 AM
#6
Tech Champion
Joined: Oct 2007
Posts: 7,341
Why use a BEC to get 2S voltage from a 2S battery?
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense.
(no comment on why I mention this 
)
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense.
(no comment on why I mention this )
06-14-2011 | 08:25 AM
#8
Why use a BEC to get 2S voltage from a 2S battery?
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense. (no comment on why I mention this )
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense.
(no comment on why I mention this )
06-14-2011 | 08:47 AM
#9
Tech Champion
Joined: Oct 2007
Posts: 7,341
All Spektrum receivers are rated for at least 9 volts per their website to the best of my knowledge. Although they don't appear to list the regular SR3000 anymore.
http://spektrumrc.com/DSM/Products/s...Receivers.aspx
http://spektrumrc.com/DSM/Products/s...Receivers.aspx
10-15-2011 | 09:15 PM
#10
Tech Master
iTrader: (39)
Joined: Oct 2011
Posts: 1,293
From: Henderson, NV
So, I tried this method which was also recommended by tech support at Novak with my Novak Kinetic and airtronics receiver. The problem I'm having is that the esc starts acting funny when I quickly pull the throttle to full. Normally (using the esc to power the receiver) the car just blasts off when I pull the trigger quickly. With the high voltage, when I quickly pull the throttle trigger, the motor starts cogging very badly and the car won't get to full speed (or even close). If I pull it slowly and smoothly to full, there is no cogging and it's just like normal. The only difference is how quickly I pull it on. I've tried using a ground and power in it's own plug directly from the battery to the receiver, and just power from the battery to the esc's center plug in the receiver. It's a Novak Kinetic esc. Any help is appreciated. Thanks
Why use a BEC to get 2S voltage from a 2S battery?
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense. (no comment on why I mention this )
First, if the receiver is high voltage capable, pull and insulate the positive wire (typically red) from the ESC to receiver plug. If not high voltage, do the same with the servo to the receiver. (leaving the ESC to power the receiver only)
Then replace that power, either with a splice from the positive side of the battery to esc wire. Or another possibility that would provide switching, is to splice off of the switched side of the ESC switch. I used to do this with the old boosted KO servos that also used direct battery voltage.
This new wire goes either to the receiver, or to the servo, depending on the first step.
Oh, and remember not to toss in a bigger battery, like a 3S, for some speed run fun. If that is a possibility, then the BEC starts to make a whole lot of sense.
(no comment on why I mention this )
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
