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Author Topic: Finishing Leadouts  (Read 3129 times)

Offline Walter Johnson

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Finishing Leadouts
« on: February 09, 2007, 04:10:51 PM »
  Hi everyone, Would love to see the best way to finish the leadouts after threading them through the slider.I will be using .037 braided that came with my Tempest II kit. Thanks Walter ;)
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Offline Joe Messinger

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Re: Finishing Leadouts
« Reply #1 on: February 10, 2007, 07:35:59 AM »
Walter,

There's lots of information/discussion on wrapping leadouts here in the Stunt Hanger archives.  Just type in "Leadouts" in the search space at the top of the page.  Should answer your question.

Joe
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Offline Bob Zambelli

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Re: Finishing Leadouts
« Reply #2 on: February 12, 2007, 11:18:35 AM »
Walt - the first photo shows some of the more common ways of dressing leadouts.

A is my favorite as it is the neatest. Downside is you need a special tool, as shown in the picture.
Properly done, the swage is as strong as or stronger than the cable.

B is easy as all you need is a pair of round-nosed pliers. Also sufficiently strong.

C might just well be the most popular, as all it requires is thin copper wire and time. Also strong.

As is very often done, you can put and eyelet inside the loop.

I wrote an article on this a while back - if you want a copy, I can e-mail it to you.

Bob Z.




Offline Randy Powell

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Re: Finishing Leadouts
« Reply #3 on: February 12, 2007, 11:31:06 AM »
I wrap them just like lines and use either an eyelet or a circle of tubing over the cable. I have some oversized eyelets that work pretty well. I also slide a piece of heat shrink tubing over the wrapping that is color coded. This also goes on the leadouts and the handle. Cuts way down on hooking up the leadouts incorrectly and protects the wrap.
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Offline Bill Little

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Re: Finishing Leadouts
« Reply #4 on: February 13, 2007, 08:02:42 AM »
Bob Z. knows his stuff on this, and I would not argue with him on it.  There is a caution, though.  If not properly "swaged" (different from "Crimping") a stress riser builds more rapidly and the line can break easier.  Don't know how important it is in actual usage, but I have heard enough horror stories to always wrap mine.  Mainly because I am too "cheap" to buy a proper "Swadgeing tool"!

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Offline Bob Zambelli

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Re: Finishing Leadouts
« Reply #5 on: February 13, 2007, 08:57:07 AM »
Little Bill is 100% correct on this one.   y1 y1

No matter how well planned or engineered, a design is useless unless properly implemented.  HB~>

In my article, I specified a few issues that must be recognized to insure proper function of the swaging system.

1)   The tube to be swaged MUST protrude at least 1/32 inch on each side of the swaging tool jaws, as shown in the first picture.
2)   The inside of the tube MUST be chamfered as shown in the second picture. This will prevent a sharp edge from biting into the cable and causing the aforementioned riser, as shown in the last picture.

This technique insures that the swage will not come out to the end and cause the riser.

Regarding the cost – the tools shown below are indeed expensive but, in my opinion well worth it. I would investigate having a few people “chip in” and buy them – spreads the financial pain a bit.

Both tools are available from www.savacable.com, the swaging tool is T-185 and the cutter is C07.

Hope this helps - Bob Z.


Offline Walter Johnson

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Re: Finishing Leadouts
« Reply #6 on: February 13, 2007, 05:39:41 PM »
Thank You all very much for the info on this. It is so nice to have all this knowledge available from all of you at all the different stages of the build. Thanks Again Walter ;)
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Offline Rudy Taube

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Re: Finishing Leadouts
« Reply #7 on: February 19, 2007, 12:43:02 AM »
Thanks Bob Z for the great answer.

I went to the cable web site and could not find the prices for the T-185 and C07? ... Is it really a case of "if you have to ask, you can't afford it"? ;-) I did see that their minimum order amount was $100, this might be a clue! ... Do you remember the approx. price?  TIA
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Offline Bob Zambelli

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Re: Finishing Leadouts
« Reply #8 on: February 19, 2007, 11:09:16 AM »
Hi, Rudy - the swaging tool is $105.00 and the cutter is $69.00.

You might try this contact:
                    Mr. David Scism, Inside Sales Representative
                    Sava Industries, Inc.
                    4 North Corporate Drive
                    PO Box 30
                    Riverdale, NJ  07457
                    Phone:  973-835-0882  Ext 3206
                    Fax:  973-835-0877
                    Email: david.scism@savacable.com

 I was told by a SAVA rep that you can place credit card orders.

 Bob Z.


Offline Igor Burger

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Re: Finishing Leadouts
« Reply #9 on: February 20, 2007, 05:00:55 AM »
end of this page you can see one solution:

http://www.rcmodely.sk/F2B/

Offline Bob Zambelli

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Re: Finishing Leadouts
« Reply #10 on: February 20, 2007, 07:38:56 AM »
BEAUTIFULLY SIMPLE!!!!!

 I like it.
                     Bob Z.


Offline Rudy Taube

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Re: Finishing Leadouts
« Reply #11 on: February 20, 2007, 02:23:11 PM »
end of this page you can see one solution:

http://www.rcmodely.sk/F2B/

Hi Igor,

Like many modelers, I love tools. The more specialty tools, like the ones Bob Z uses, we can have the better, practical or not. ;-)

But, with that said, the method shown on your link is very hard to resist. Like Bob Z said, beautifully simple.

Thank you for the link. I think you just saved me $174.00.   H^^

Regards

Rudy
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Offline Mike Palko

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Re: Finishing Leadouts
« Reply #12 on: February 20, 2007, 04:14:59 PM »
end of this page you can see one solution:

http://www.rcmodely.sk/F2B/

Did anyone notice the control horns in the link? Very interesting construction method! They look very labor intensive, but very well done.

Offline Rudy Taube

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Re: Finishing Leadouts
« Reply #13 on: February 20, 2007, 08:18:55 PM »
Did anyone notice the control horns in the link? Very interesting construction method! They look very labor intensive, but very well done.

Your right Mike, very nice horns. They look hand made. Looks to me like they are a labor of love, and/or necessity? I was hoping Igor would tell us what country the model is from. I wish I had the talent, patience, and energy to build such a high quality plane. :-)
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Offline Igor Burger

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Re: Finishing Leadouts
« Reply #14 on: February 22, 2007, 03:24:57 AM »
>>>They look very labor intensive<<<
I do not think it is execessive, but if nothing else, it needs simple tools available home:

(ignore Slovak text, look and click pictures on right side)

http://www.rcmodely.sk/zobrazclanok.php?id=262

Offline Ward Van Duzer

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Re: Finishing Leadouts
« Reply #15 on: February 27, 2007, 12:06:44 PM »
The technique shown in the fotos is neat, but I would be concerned that the epoxy/solder/whatever closing off the end of the copper tube might cause a stress riser. No?

W.
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