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Author Topic: Making Good Leadouts  (Read 4124 times)

Offline Allen Eshleman

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Making Good Leadouts
« on: February 11, 2013, 07:08:49 AM »
I will soon be starting work on a Vector ARC.   I am seeing lots of recommendations to change out the leadouts.  How could I make my own, using the bellcrank that is already there and not spending a lot of money.  I have a .027 new set of leadout wires from Brodak and the leadouts from a destroyed Tutor II, still connected to the old bellcrank.   I've also considered doing a hardwire set of leadouts but they make transportation a bear.

Thanks in advance.

Allen Eshleman

Offline Curare

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Re: Making Good Leadouts
« Reply #1 on: February 11, 2013, 10:32:11 PM »
I'll be watching this, just about finished my oriental, and want to see if there's a nifty way of doing the leadouts:)
Greg Kowalski
AUS 36694

Offline Tim Wescott

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Re: Making Good Leadouts
« Reply #2 on: February 11, 2013, 11:00:54 PM »
Look in the CL General rules; one of the acceptable methods for finishing off a set of lines is to wrap the ends with copper wire.  There's a figure in there with directions.  Get yourself some eyelets (from Sig or Brodak or MBS Model Supply) and some wire (from Sig or Brodak or Radio Shack) and start winding.
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Allen Eshleman

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Re: Making Good Leadouts
« Reply #3 on: February 12, 2013, 12:03:51 PM »
Thanks Tim,

I just googled "making good control line leadouts" and came up with a 10 page list of general rules.  I didn't notice the web site.  I think it was AMA.  I found it:

www.modelaircraft.org/files/2011-2012CLGeneral4.pdf

Great information on how to make leadouts.  There are good illustrations there. It's the Competition Rgulations for 2011-2012 rules governing Model Aviation Competition in the United States.

If you're looking like I was,  look there.

Offline Trostle

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Re: Making Good Leadouts
« Reply #4 on: February 12, 2013, 12:44:49 PM »
The rules for 2013-2014 are there also.

http://www.modelaircraft.org/files/2013-2014CLGeneral.pdf

Offline Allen Eshleman

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Re: Making Good Leadouts
« Reply #5 on: February 12, 2013, 01:36:47 PM »
Thanks,

      We're now up to date.

Allen

Offline john e. holliday

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Re: Making Good Leadouts
« Reply #6 on: February 12, 2013, 06:14:39 PM »
Instead of eyelets, I myself use peices of brass tubing that has been run thru a torch to anneal it.   Cut to 1 inch or longer lengths.   May have to open the holes in the bellcrank a little.  Put leadot thru tubing.  Insert in bellcrank hole and start wrapping if that what you want to do.   I use Carl Shoupes swagging method on mine.  Now the leadout end out side the wing tip, I insert the leadout in the tubing and wrap it around a 1/8" peice of wire or drill bit.   The tubing holds the leadout cable from moving.   If the bend is not quite where you want it, the cable can be moved a little.   
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline MarcusCordeiro

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Re: Making Good Leadouts
« Reply #7 on: February 13, 2013, 02:11:59 PM »
I do as Doc said, but use pliers to bend the tubing.
It is veryy good 'cause the wires are held in place while wrapping... ;D ;D ;D

Marcus
Live to fly, fly to live
Aces High!

"There's no try. Do or Do not." - Master Yoda

"Wealth and fame, he's ignorant
Action is his reward, look out
Here comes Marcus, man..."

Offline Tim Wescott

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Re: Making Good Leadouts
« Reply #8 on: February 13, 2013, 02:28:34 PM »
I use eyelets on the line ends, tubing at the bellcrank.  I was given a plane that uses very thin tubing around the line ends -- if I could scare some of that stuff up, I'd use it instead of eyelets and be happy!
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Curare

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Re: Making Good Leadouts
« Reply #9 on: February 13, 2013, 06:44:17 PM »
Doc, when annealling the copper, how you do you when it's right? Is it a color change?

I hadnt thought to anneal my last leadout tubes and they were 'interesting' to bend. :D
Greg Kowalski
AUS 36694

Offline Tim Wescott

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Re: Making Good Leadouts
« Reply #10 on: February 13, 2013, 06:56:33 PM »
I was taught to anneal brass, copper, and aluminum by my dad, who occasionally did bodywork on brass-era cars.

Take your oxy-acetylene torch (remember, you're in a body shop...) and start it up on acetylene only.  Soot up the surface of the metal with the torch until it's evenly blackened.  Then turn on the oxygen to get a neutral flame.  Use the flame to heat the metal until the soot just disappears -- when the soot burns off, the metal is at the right temperature to anneal, and you move your torch to the next spot.  It should air-quench* plenty fast to soften.

You could probably soot things up with a candle, and use a propane torch to do the annealing -- you'll have to try that part yourself if you don't have an oxy-acetylene set.

* non-ferrous metals harden and soften in reverse from steel: with steel you make it hard by heating it up and cooling it quick, to "freeze" the crystalline structure in place, and you make it soft by heating it up and cooling it slow, to let the crystalline structure relax.  With most alloys of non-ferrous metals, you make it soft by heating it above its critical temperature and quenching it, and you harden it ("precipitation harden") by holding it at elevated temperatures for a while.  It's all voodoo to me -- I just repeat what I've heard from folks who actually know: except it seems to work.
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline john e. holliday

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Re: Making Good Leadouts
« Reply #11 on: February 14, 2013, 10:20:09 AM »
Well I guess I do it wrong as I just fire up the butane torch and let the tubing get red in the flame and keep it moving.   Have to swap ends before I get all of it done.   Makes for easy cuts with use EXacto blade and bend easy most of the way around the rod.   Use pliers to getit to tear drop shape. 
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline MarcusCordeiro

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Re: Making Good Leadouts
« Reply #12 on: February 14, 2013, 10:31:46 AM »
I use 3/32 tubing and bend it cold. Cut with the dremel+ disc.
Sometimes I solder the wrapping, but I use epoxi mostly.
Never had a problem.

Marcus
Live to fly, fly to live
Aces High!

"There's no try. Do or Do not." - Master Yoda

"Wealth and fame, he's ignorant
Action is his reward, look out
Here comes Marcus, man..."

Offline john e. holliday

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Re: Making Good Leadouts
« Reply #13 on: February 14, 2013, 10:39:43 AM »
You realize you are making a  hard pint at the end of your wrap.  Of course I don't think it makes much difference as I use the swagging method.   But, the tube is bell shape at each end of the swagged area.  Have pics on here some where, but they are not too clear.  Mucho better to show in person.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Allen Eshleman

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Re: Making Good Leadouts
« Reply #14 on: February 14, 2013, 11:49:43 AM »
What size wire do you use for wrapping?   Believe it or not, it's easy to get on Amazon.

Offline john e. holliday

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Re: Making Good Leadouts
« Reply #15 on: February 15, 2013, 08:38:41 AM »
The copper wire I used to use came from MBS Model Supply.  Melvin has the coated and non-coated on small spools.   I have never asked the size of it as it worked for me at the time.   
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.


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