Multi-servo wing - RCCanada - Canada Radio Controlled Hobby Forum
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Old 11-16-2006, 06:42 PM   #1
michel gravelle
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Multi-servo wing

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I m building a wing that will have will have 4 servos and a air retract system . Two servos will be for the ailerons and two for the flaps and two air lines in each wing .

This is my question .

Do you leave every thing lose in the wing or do you tie it down : . The length of the wires on the servo is 11.5 inchs . the distance of the servo from where the the wire exits the wing ( which is the centre ) is 17 inchs . The flaps of course are inboard of the ailerons which is 5.5 inchs from the centre of the wing .

I have already perchased 24 inch extentions for the ailerons , which I plan to leave in the wing , and that makes for a lot of wire just sitting in the wing . Of course I will leave a length of wire in the centre so that I will attach it to the reciver in the fuselage Can I coil up the servo wire before I install the servo : And since I am leaveing the extention in the wing is it normal to hold down the wires and air lines inside the wing :

I cann t see leaveing this stuff lose in the wing , even though I will never see it , it will bug the hec out of me if I leave it lose . I have no idea what to do here . I have never built a wing with all this spaghetti ( hope I spelt that right ) . I m worried about coiling up the wires and how too attach it What is the good practice .

I m almost at the point of closeing the wing , some help, would greatly be appiciated

Michel ( Mike )
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Old 11-16-2006, 06:51 PM   #2
warbird alley
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Running the lines

Hi Mike

I have always used liners like a tube running from the entrance rib to the exit rib. The air lines I always just fasten down with a few blocks of balsa.
The liners I use are heat shrink tubing but I have heard of guys using drinking straws, make sure the connection points are fastened with tape I use the fiberglass tape its very strong and sticks well!

I hope this helps you out, if I can help anymore let me know!

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Old 11-16-2006, 07:47 PM   #3
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a very light extension tube is a piece of paper wrapped around a dowel, not too many wraps, then tape the outside. slide off dowel, if you want ti stiffer to glue in you can wick thin ca on the inside. let cure, use these to route the wires. make sure you tape or tie your leads together.
Awww crap my rudder fell off.
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Old 11-16-2006, 08:40 PM   #4
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The last AC I did I used the slurpee plastic straws. They pass the connector with no problem and very lite. Like you I had a lot of loose cable left over and instead of coiling it I went and got a couple shorter. Still have the long ones for another project maybe but I worried also about the coils and the other part I looked at was the extra wire. Shorter the better for voltage drop or what ever they want to call it.
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Old 11-16-2006, 10:59 PM   #5
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I would avoid attaching it inside the wing. At either end, where it's accessable, sure, but not inside where it can't be gotten to. In the event you need to change an airline, or servo, or do any troubleshooting, you will curse every thing you can think of if you have to take out the knife and slice open the wing.

A tube of some sort is a good idea, it will eliminate chaffing on the wires and airlines.

I try to keep all my wiring etc nice and neat, but I keep it so that I can take it all out without taking a knife to the airframe or covering.
Michael Gyger
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