How many amps will all the electrics draw?

[coolice]

Hey.

Yeah I would, its just not worth the risk with a low rated BEC. As can be proven some fliers manage fine with a 2in1, but a large proportion have experienced problems. The main cause is from FB to FBL conversions, as the load imposed on the servos through an FB setup is less than with a FBL due to the extra control arms between servo and blade offering a decent mechanical advantage in moving the control surfaces.

The other thing is that a higher output voltage, such as 6 volts, will be much more efficient and in turn lower the overall amp draw. Not a lot admittedly but any less is better. Also for a FBL system the servos do need to meet a minimum spec and I know the Align units ask for their servos to be powered by 6 volts so that they meet the minimum spec required for best performance.
.

[BenScoobert]

Hey.

Yeah I would, its just not worth the risk with a low rated BEC. As can be proven some fliers manage fine with a 2in1, but a large proportion have experienced problems. The main cause is from FB to FBL conversions, as the load imposed on the servos through an FB setup is less than with a FBL due to the extra control arms between servo and blade offering a decent mechanical advantage in moving the control surfaces.

The other thing is that a higher output voltage, such as 6 volts, will be much more efficient and in turn lower the overall amp draw. Not a lot admittedly but any less is better. Also for a FBL system the servos do need to meet a minimum spec and I know the Align units ask for their servos to be powered by 6 volts so that they meet the minimum spec required for best performance.
.

My point is, the power feed lead and the throttle signal lead are one and the same. Just searching the manual for an option to disable BEC.

[BenScoobert]

From the manual
BEC:
Additionally to the use of the BEC a 4 cell NiCd/NiMH
receiver buffer battery can be connected through a switch
cable into a free plug of the receiver or a through Y-cable.
The buffer battery avoids tension drops on hard servo
maneuvers, protecting the receiver’s functionality.
Make sure that no discharged receiver battery is used,
because this would load the BEC additionally by charging
the battery. A half or fully loaded Battery will not be charged
and is only discharged in extreme conditions. The plus
(red) wire of the receiver cable does not need to be
disconnected.
Several ESC’s can be connected to a single receiver
without any special precautions (Parallel use of all the
BECs). The total maximum available load is the sum of the
individual BECs.
A configuration without BEC and with galvanic separation
is also possible. For that please use our opto coupler
module.

[coolice]

My point is, the power feed lead and the throttle signal lead are one and the same. Just searching the manual for an option to disable BEC.

Hey.

Yes it is, but you can remove the red wire only thus disabling the BEC supply to the receiver from the ESC.

From the manual
BEC:
Additionally to the use of the BEC a 4 cell NiCd/NiMH
receiver buffer battery can be connected through a switch
cable into a free plug of the receiver or a through Y-cable.
The buffer battery avoids tension drops on hard servo
maneuvers, protecting the receiver’s functionality.
Make sure that no discharged receiver battery is used,
because this would load the BEC additionally by charging
the battery. A half or fully loaded Battery will not be charged
and is only discharged in extreme conditions. The plus
(red) wire of the receiver cable does not need to be
disconnected.
Several ESC’s can be connected to a single receiver
without any special precautions (Parallel use of all the
BECs). The total maximum available load is the sum of the
individual BECs.
A configuration without BEC and with galvanic separation
is also possible. For that please use our opto coupler
module.

Is this taken from the Beastx manual?
To my knowledge the only ESC I know about which can run and sustain a buffer pack is the Kontronik's.
After seeing the effects of Spektrums advised settings for servo frequency, which made the servos run hot on recommended Hz settings from the web site, I'd not be too quick to try connecting buffer packs to the other side of just any ESC.

What ESC are you using out of interest? I've not seen it mentioned.
There are redundancy circuits you can purchase and fit, but its perhaps over complicating things.
.

[BenScoobert]

Hey.

Yes it is, but you can remove the red wire only thus disabling the BEC supply to the receiver from the ESC.

Good thinking Batman

Is this taken from the Beastx manual?
To my knowledge the only ESC I know about which can run and sustain a buffer pack is the Kontronik's.
After seeing the effects of Spektrums advised settings for servo frequency, which made the servos run hot on recommended Hz settings from the web site, I'd not be too quick to try connecting buffer packs to the other side of just any ESC.

What ESC are you using out of interest? I've not seen it mentioned.
There are redundancy circuits you can purchase and fit, but its perhaps over complicating things.
.

The manual is for the YGE 40-160a range, attached pdf file.

[coolice]

Hey.

Ah, that's why I'm getting confused wondering were the buffer pack text was from.
I don't know the YGE's so can't pass comment, I thought they didn't have BEC's?
.

[Andy from Sandy]

The other thing is that a higher output voltage, such as 6 volts, will be much more efficient and in turn lower the overall amp draw.

Not on electronic equipment it wont. It is a resistive load so as the voltage goes up so does the current. Ohms law. V/R = I.

[coolice]

Not on electronic equipment it wont. It is a resistive load so as the voltage goes up so does the current. Ohms law. V/R = I.

Hey Andy.

Using science formula is one thing, but actual field testing has proven otherwise with capacity used after a flight from the Rx pack. If the servos don't have to work so hard as they have more power, then their current draw will be less.

So with the above formula how does that relate to/explain HV ESC setups, which is electronic equipment, that does benefit from lower amp draw with more power?
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[Andy from Sandy]

So with the above formula how does that relate to/explain HV ESC setups, which is electronic equipment, that does benefit from lower amp draw with more power?

Look at the resistance of the motor windings. A 12S motor has a higher resistance.

[coolice]

Look at the resistance of the motor windings. A 12S motor has a higher resistance.

Hey.

Yes, I can see that. But also a servo has windings so even though the resistance is a fraction of the larger motor its all relevant to one another.
A high resistance motors amp draw benefits from 50 volts connected to it and a smaller motor with less resistance also benefits from a higher (but smaller obviously) voltage stuck up its windings.
We also have to remember the thin PCB tracks the power has to go through within the FBL, servos, regs etc and so a no matter how small by comparison a higher voltage can reduce amp load. It's smaller than a motor granted, but notable.
.

[Wayne's World]

Not on electronic equipment it wont. It is a resistive load so as the voltage goes up so does the current. Ohms law. V/R = I.

Although very true, the servo motor forms an over-riding inductive load. This changes the resistance from a static load to a dynamic load.