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Author Topic: Wrapping Wire  (Read 4461 times)

Offline Angelo Rosa

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Wrapping Wire
« on: June 22, 2008, 05:41:51 PM »
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Hi, Everyone

I have a question about the thickness of the copper wire used to wrap the ends. For .008 nylon coated line (overall OD .015) I used a very fine .008/.009 copper wire. This seem to work well.

Now, the question is, can or should I use the same OD copper wire for thicker lines or do I have to increase it?

The copper wire I purchased with .012 and .015 line has a OD of .015 and is more difficult to work with and doesn't seem to produce as refine a wrap as with the thinner copper wire.

Thanks

Angelo

Offline Clint Ormosen

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Re: Wrapping Wire
« Reply #1 on: June 22, 2008, 07:17:32 PM »
Your same small .008 copper will work just fine. It's what I use.
-Clint-

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Finding new and innovated ways to screw up the pattern since 1993

Offline Angelo Rosa

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Re: Wrapping Wire
« Reply #2 on: June 23, 2008, 07:32:19 PM »
Thanks for the input Clint!

All the best.

Angelo

Online Lauri Malila

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Re: Wrapping Wire
« Reply #3 on: June 30, 2008, 04:45:25 AM »


 Hi.

 Is it stated in AMA rules thet you have to use copper wire? I use kevlar thread and cyano as I think that with copper wrapping you create a weak point right where the copper ends. Before that I used just normal button thread without problems. L

Offline Randy Powell

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Re: Wrapping Wire
« Reply #4 on: June 30, 2008, 09:06:21 AM »
I use very fine stainless that I get at a craft store. Can't remember the diameter at the moment, but it's pretty fine.
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Offline don Burke

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Re: Wrapping Wire
« Reply #5 on: June 30, 2008, 10:00:03 AM »
The AMA control line general section diagrams all have arrows pointing to the wrappings noted as "soft wire".  If one used other than wire, the only problem would be if there was an accident and an insurance claim or lawsuit resulted.
don Burke AMA 843
Menifee, CA

Online Lauri Malila

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Re: Wrapping Wire
« Reply #6 on: June 30, 2008, 01:14:20 PM »


 Ok. Thanks for info. I'll change to tin wire. But I will not fly in California because it may cause cancer there. L

Offline roger

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Re: Wrapping Wire
« Reply #7 on: July 02, 2008, 05:44:25 PM »
 VD~fly in a ball field and no will care.... LL~

Offline don Burke

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Re: Wrapping Wire
« Reply #8 on: July 02, 2008, 08:54:23 PM »
Everybody's got junk appliance power cord lying around someplace!  I strip the insulation off about 3 foot lengths, then unwind a strand as I need it.  I wind the strand onto a 1" long piece of 3/8 dowel to make it easier to handle and wrap around with the control line in the wrapping jig.  The strands are about .008 dia. 
don Burke AMA 843
Menifee, CA

Offline Randy Powell

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Re: Wrapping Wire
« Reply #9 on: July 02, 2008, 11:20:06 PM »
Don,

The stuff I use is pretty soft. It's an alloy and is a lot stronger than copper. I've never had a failure using it.

But then, we live in the most litigious society in history. I'm sure someone would sue just to do it. The possibility of screwing someone out of money is always an attractant.
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Offline Andrew Hathaway

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Re: Wrapping Wire
« Reply #10 on: July 03, 2008, 05:09:15 PM »
I buy copper wire at the local Hobby Lobby in the beading section.  A couple dollars buys a spool with enough wire to do several sets of lines. 

Offline Paul Smith

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Re: Wrapping Wire
« Reply #11 on: July 04, 2008, 06:33:56 AM »
--------------------------------------------------------------------------------

Hi, Everyone

I have a question about the thickness of the copper wire used to wrap the ends. For .008 nylon coated line (overall OD .015) I used a very fine .008/.009 copper wire. This seem to work well.

Now, the question is, can or should I use the same OD copper wire for thicker lines or do I have to increase it?

The copper wire I purchased with .012 and .015 line has a OD of .015 and is more difficult to work with and doesn't seem to produce as refine a wrap as with the thinner copper wire.

Thanks

Angelo


.008 with nylon coating?  For what?  Electronic controls?
Paul Smith

Offline Bill Gruby

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Re: Wrapping Wire
« Reply #12 on: July 04, 2008, 08:05:21 AM »
 FWIW ------ Most of the time you will not find copper wire around here sold be .008 dia etc. I use 24 gauge copper wire. It comes in 100 ft rolls and costs a whopping $2.05/100 ft. True Value Hardware is where I get mine. Any one of them will carry it and it is usually with the picture hanging stuff.

  "Billy G"    H^^
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Offline Andrew Hathaway

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Re: Wrapping Wire
« Reply #13 on: July 04, 2008, 10:21:47 AM »
I used the hardware store wire for awhile.  It works, it's just heavier and more bulky then it needs to be.  The beading wire I use for small stuff is 32 gauge, 28 is a little more tolerant.  I usually use the 28 for anything .015 and larger.

Offline Joe Messinger

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Re: Wrapping Wire
« Reply #14 on: July 04, 2008, 11:14:46 AM »
Hello,

For quite some time now I have used size "A" nylon rod winding thread to make up the terminal ends on my lines and lead outs.  This thread is stronger than .020 copper wire and doesn't fatigue with repeated bending.  I wind the thread 3/4" down from the loop or grommet, fold the line back on itself, wind the thread back up to within 1/4" from the starting point, clip off the excess folded line, finish the wrap and tie it off with a whip finish knot.  Several half hitch knots will work also. Apply a drop or two of thin CA to the wrap.  Slide a 7/8" length of heat shrink tubing up and over the wrap, shrink it and it's finished.  Don't forget to slip the heat shrink tubing over the line -BEFORE- you start the wrap! I use green tubing for the down line and red for up. Your choice for colors.

I use a fly tying tool called a bobbin to apply the thread.  It's a device that holds the spool of thread and has a 2"-3" tube attached.  The thread goes from the spool through the tube.  The bobbin allows you to control the thread much better than just using your fingers and you can also control the tension by adding or relaxing the pressure on the spool with the palm of your hand as you wrap the thread.  A bobbin can also be used in the same way with copper wire if you choose. Most fly fishing shops carry bobbins and thread.  They also have copper wire on spools and of various sizes.  Cabela's also has this stuff.  Look in the fly fishing section if you might be interested in trying this method of wrapping lines.

Using a bobbin, you can speed up the process by holding the line with both hands (about 4" apart) and spinning the bobbin down or up the thread after you've started the wrap.  It's the same method used for "serving" bow strings.

I've wrapped lots of lines and lead outs for myself and others using the size A thread with the method described above and have never had a failure.  It's fast, strong and easy.

Joe
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Offline Bill Little

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Re: Wrapping Wire
« Reply #15 on: July 04, 2008, 01:34:00 PM »
I like the colored spools that come from Radio Shack.  Three spools to a package, one is copper and large, the other two are red and green.  Red for up, green for down on the leadouts.  Plenty good size for wrapping!  I also do my flying lines the same.

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Offline Randy Powell

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Re: Wrapping Wire
« Reply #16 on: July 04, 2008, 03:21:11 PM »
I went and looked. the stuff I'm using is 28 gauge.
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Offline Bill Gruby

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Re: Wrapping Wire
« Reply #17 on: July 05, 2008, 01:45:45 AM »
 Angelo

   Bercause wire is measured in Gauge not inches here is a chart that tells you what gauge wire is in thousandths.

 http://www.the-beading-emporium.com/whgawidoine.html

  "Billy G"   H^^
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Offline Bill Gruby

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Re: Wrapping Wire
« Reply #18 on: July 07, 2008, 04:33:16 AM »
I used the hardware store wire for awhile.  It works, it's just heavier and more bulky then it needs to be.  The beading wire I use for small stuff is 32 gauge, 28 is a little more tolerant.  I usually use the 28 for anything .015 and larger.

  There is a perfectly good reason I use the heavier wire and it's not because I think it is stronger. I have "Arthritis in both hands and the wire is easier to handle. Something us old guys have to think about. If I could I would use the smaller diameter.

  "Billy G"
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Offline Andrew Hathaway

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Re: Wrapping Wire
« Reply #19 on: July 07, 2008, 10:46:05 AM »
I gave up the hardware store wire because I didn't like having the weight sling around at the end of the leadouts so close to silkspan.  It also takes up more space inside a wing at the bellcrank, and puts more weight at both ends of the lines.  It works fine, but if you can get away with the thinner wire, all those problems go away and the finished product looks better.  The catch is it's easier to kink and harder to work with.

Offline Bill Adair

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Re: Wrapping Wire
« Reply #20 on: July 07, 2008, 03:54:08 PM »
Ty,

I have some Brodak .008" lines to wrap, but I'm afraid #28 gauge wire might be too heavy for that small line, particularly since it's bigger in diameter than the lines.

Have you tried wrapping the smaller size lines?

Bill
Not a flyer (age related), but still love the hobby!

Offline Andrew Hathaway

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Re: Wrapping Wire
« Reply #21 on: July 07, 2008, 05:47:06 PM »
If you try to wrap lines with larger wire, the line tries to conform to the winding rather then the wrapped wire.  That's part of the reason I use the 32 gauge wire on thinner lines.  I haven't done any .008's, but on .012's it's easier to wrap the lines with the 32 then the 28.  It should work either way, but the 28 might make the cable twist instead of the copper winding around the cable.

Offline Bill Adair

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Re: Wrapping Wire
« Reply #22 on: July 07, 2008, 07:09:33 PM »
Thanks Andy,

Guess I'll just strip some fine electrical wire. High flex wire is usually made of very fine multi-strand conductors.

Bill

Not a flyer (age related), but still love the hobby!

Offline Joe Messinger

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Re: Wrapping Wire
« Reply #23 on: July 07, 2008, 07:21:47 PM »
Hi Guys,

Maybe my earlier post on this subject was too long not many read it but the nylon fly tying thread works quite well.  It's light, stronger than copper wire and wraps quickly and easily using a bobbin.

Joe
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Offline Bill Adair

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Re: Wrapping Wire
« Reply #24 on: July 07, 2008, 08:05:43 PM »
Hi Joe,

I read your post earlier, and found it very interesting.

Matter of fact, I have some rod wrapping thread around here somewhere. Even have a bottle of the varnish to seal the wrappings.

Found it, in two colors yet!  ;D It's marked Nylon D, and it's very fine thread.

I agree with Bill Gruby though, and think copper wire would be lots easier to keep in place while winding. 

Bill
Not a flyer (age related), but still love the hobby!

Offline Bill Adair

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Re: Wrapping Wire
« Reply #25 on: July 08, 2008, 11:22:50 AM »
Ty,

I've used Dacron lines a couple of times (many years ago) with marginally powered half A (and smaller) airplanes, and even with those the line sag and stretch was scary.  ~^

I do have a roll of Spiderwire still sealed in the package, but it's about ten years old, and only twelve pound test (eight pound size). Do you think that would be strong enough for a  Baby Clown ARF with a Norvel .049 engine?

I've been told that longer line lengths are needed for that combination.

Bill





Not a flyer (age related), but still love the hobby!

Offline Tom Perry

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Re: Wrapping Wire
« Reply #26 on: July 08, 2008, 09:18:07 PM »
Bill,

I just picked up my first batch of Spider Wire at Wall Mart.  20 lb. test, moss green, 6 lb. test dia.  Says on package; Teflon coated microfibers to ensure smooth casting.  All looks good except the green part makes it hard to see in the grass.  I will try it this coming weekend and give a report.

                                  AP^
Tight lines,

Tom Perry
 Norfolk, Virginia

Offline Bill Adair

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Re: Wrapping Wire
« Reply #27 on: July 08, 2008, 10:48:12 PM »
Tom,

Great! I'm looking forward to hearing your report.  H^^

What do you plan to fly on your Spiderwire lines?

They must have improved Spectra lines since I bought mine, as yours is a lot  stronger, and also smaller in diameter!

Mine may be the same shade of green though, and there is no doubt that mine will disappear in the grass.

Bill



Not a flyer (age related), but still love the hobby!

Offline Bill Adair

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Re: Wrapping Wire
« Reply #28 on: July 09, 2008, 05:19:41 PM »
Ty,

The knot most recommended is the Palomar knot, but it doesn't seem well suited for line clips. Here is a link to an animated instruction.

http://www.animatedknots.com/palomar/index.php

An earlier thread on Spectra lines reports that the test strength is only half the rating on the package! It also suggested that terminating the line with a small radius wrap (such as a small line clip), may reduce it even more.

I have a roll of small Teflon tubing that I picked up to extend CA nozzles, but found it's way too big for that purpose. Think I will try a short length of that around the end of a line clip, and see if I can tie a knot onto the tubing, instead of directly on the clip.

Spectra line should not be brittle, so I'm not sure what you have?

Bill

Not a flyer (age related), but still love the hobby!

Offline Ward Van Duzer

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Re: Wrapping Wire
« Reply #29 on: July 30, 2008, 09:17:30 AM »
Just a thought for those who use CA, Epoxy, Solder, or those little crimped line ends...You are creating a stress riser at the end point of these materials. With enough use you may find the daily flexing of your lines at these points causing a break in one or all of the individual strands that make up your flying lines. I thought the AMA guidelines for wrapping line ends pointed this out...That's the whole reason we bind with soft copper twisted at the end.


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Offline don Burke

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Re: Wrapping Wire
« Reply #30 on: August 07, 2008, 04:39:44 PM »
The AMA guidelines also note "full flow solder" or epoxy coating for all line ends except the crimped ones.
don Burke AMA 843
Menifee, CA


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