JR wiring gauge 35% set up
#1
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JR wiring gauge 35% set up
Hello Danny
Putting together yak 54 QQ 102 with 8611a x 6 and one 8711, spectrum receiver, matchbox x2. Dual 2900 mah batteries, regulators, and switches.
Can I use standard JR plugs and wiring? Between battery and switch and regulator and receiver? And extensions to matchboxes and servos?
How much loss across these connections and with this wiring if drawing 3D currents with this set up?
Should I run power directly to the matchboxes in the wings - or just run matchboxes off the power from the extension to the receiver?
On another note: Does spectrum have fail-safe mode or equivalent?
May not want to answer this one - but I am wondering given these project parameters, is there any reason to prefer duralite vs fromeco battery, regulator?
Thanks for any comments.
RJM
Putting together yak 54 QQ 102 with 8611a x 6 and one 8711, spectrum receiver, matchbox x2. Dual 2900 mah batteries, regulators, and switches.
Can I use standard JR plugs and wiring? Between battery and switch and regulator and receiver? And extensions to matchboxes and servos?
How much loss across these connections and with this wiring if drawing 3D currents with this set up?
Should I run power directly to the matchboxes in the wings - or just run matchboxes off the power from the extension to the receiver?
On another note: Does spectrum have fail-safe mode or equivalent?
May not want to answer this one - but I am wondering given these project parameters, is there any reason to prefer duralite vs fromeco battery, regulator?
Thanks for any comments.
RJM
#2
RE: JR wiring gauge 35% set up
I'd recommend heavy duty extensions. Though there will be some loss through the wires, it is negligable. Yes, Spektrum has fail safe, which the positions are stored when you bind the receiver to the TX. I don't know of any reason to prefer one over the other.
JRPA093 SERVO EXTENSION 3" HEAVY DUTY,GOLD
JRPA095 SERVO EXTENSION 6" HEAVY DUTY, GOLD
JRPA097 SERVO EXTENSION 9" HEAVY DUTY, GOLD
JRPA098 SERVO EXTENSION 12" HEAVY DUTY,GOLD
JRPA099 SERVO EXTENSION 18" HEAVY DUTY,GOLD
JRPA102 SERVO EXTENSION 24" HEAVY DUTY,GOLD
JRPA103 SERVO EXTENSION 36" HEAVY DUTY,GOLD
JRPA104 SERVO EXTENSION 48"HEAVY DUTY GOLD
JRPA093 SERVO EXTENSION 3" HEAVY DUTY,GOLD
JRPA095 SERVO EXTENSION 6" HEAVY DUTY, GOLD
JRPA097 SERVO EXTENSION 9" HEAVY DUTY, GOLD
JRPA098 SERVO EXTENSION 12" HEAVY DUTY,GOLD
JRPA099 SERVO EXTENSION 18" HEAVY DUTY,GOLD
JRPA102 SERVO EXTENSION 24" HEAVY DUTY,GOLD
JRPA103 SERVO EXTENSION 36" HEAVY DUTY,GOLD
JRPA104 SERVO EXTENSION 48"HEAVY DUTY GOLD
#3
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RE: JR wiring gauge 35% set up
As always, thanks Dandy for answers.
I was also asking about matchbox power options. I understand one can power matchbox via standard extension from receiver, or via power directly from extra power lead off battery or regulator. Any merit to one over the other?
Thanks
RJM
I was also asking about matchbox power options. I understand one can power matchbox via standard extension from receiver, or via power directly from extra power lead off battery or regulator. Any merit to one over the other?
Thanks
RJM
#4
RE: JR wiring gauge 35% set up
The benifit of powering the matchbox directly comes up when you are using 3-4 servos through the matchbox that are high amp draw, you can power it directly to reduce that load off of the receiver, however in most cases that is not necessary.
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RE: JR wiring gauge 35% set up
Hi Danny
It's me again, same project.
If I run wing matchboxes (two servos) off one lead from receiver, all the juice to both servos will run through the one extension from receiver to matchbox. From your earlier post, I gather this is no problem if the lead is short and robust - correct?
If I run power to the matchbox from the battery (or regulator), and one battery (or regulator) fails, then will that matchbox then fail or will the power from the receiver lead pick up the load? And if the matchbox fails, will the servos go to neutral? Will this occurence make the plane uncontrolable?
If I am runnning two batteries and one fails and the operating battery is operating towards the low end of its charge, can the demands of the system (all the servos working together) produce enough current draw to drop the voltage below a theshold that would kick the receiver off line? If so, then one? Do the servos try to hold last position, and would this continue to draw down the voltage?
I am trying to understand just how much redundancy I get with the extra battery and regulator, and what it would take to lose control of the ship after complete failure of one of the two battery / regulators?
Thanks Danny
I promise this can't go on much longer as I am going to buy electrial system this weekend .... just a matter of which one.
RJM
It's me again, same project.
If I run wing matchboxes (two servos) off one lead from receiver, all the juice to both servos will run through the one extension from receiver to matchbox. From your earlier post, I gather this is no problem if the lead is short and robust - correct?
If I run power to the matchbox from the battery (or regulator), and one battery (or regulator) fails, then will that matchbox then fail or will the power from the receiver lead pick up the load? And if the matchbox fails, will the servos go to neutral? Will this occurence make the plane uncontrolable?
If I am runnning two batteries and one fails and the operating battery is operating towards the low end of its charge, can the demands of the system (all the servos working together) produce enough current draw to drop the voltage below a theshold that would kick the receiver off line? If so, then one? Do the servos try to hold last position, and would this continue to draw down the voltage?
I am trying to understand just how much redundancy I get with the extra battery and regulator, and what it would take to lose control of the ship after complete failure of one of the two battery / regulators?
Thanks Danny
I promise this can't go on much longer as I am going to buy electrial system this weekend .... just a matter of which one.
RJM
#7
RE: JR wiring gauge 35% set up
That is not a problem at all. If you have the jumper installed in the matchbox it will use power from the receiver, if it is not installed the matchbox will not use power from the receiver. The matchbox does not have a battery 'fail safe', so if it is not powered, the servos will simply not operate and will not be on. Yes, if your battery is low, the voltage demands of the system can pull the power too low, it is possible. No, systems do not have a battery fail safe, if the battery drops, the system will stop functioning. The purpose of using dual batteries/switches is to gain redundancy and handle the current demands of a system and is the preferred method for large aircraft.