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Unusual cable ends

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Richard Pike

Joined: 09 Jan 2006
Posts: 1670
Location: Blountville, Tennessee

Posted: Fri May 20, 2011 7:45 am Post subject: Unusual cable ends

Non-Kolb related, but I expect somebody on the list can give me some useful info, so please bear with me and help me out.

Yesterday a friend and I went to look at a Kitfox that is being prepared for inspection and flight, and I was baffled by these cable end fittings. Years ago I saw another Kitfox that used these same cable end fittings for the rudder cables, one of them came loose and the pilot had a nasty ground loop and took the gear off it. Now I see them again on this airplane, so apparently Kitfox likes them, but I don't. The builder has done a good job, they were in the cable loop extremely tight with no give, but still - they just don't seem right to me. I don't like them.



So my question is: is this an acceptable way to do cable end fittings? Does anybody else have any experience with these little round barrels with a groove in them?  Feedback? Is this actually an approved part or way of doing things? 

Thanks.



Richard Pike

MKIII N420P (420ldPoops)

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williamtsullivan(at)att.n
Guest

Posted: Fri May 20, 2011 7:56 am Post subject: Unusual cable ends

Richard- I have seen that type used on an Elgin street sweeper, to pick up the gutter broom.  No trouble with them, but they were a lot bigger.  Maybe the Kitfox didn't have a big enough washer on it?

  

                                                   Bill Sullivan

                                                   Windsor Locks, Ct.

                                                   FS 447



--- On Fri, 5/20/11, Richard Pike <richard(at)bcchapel.org> wrote:



  	  Quote: 	
		  

From: Richard Pike <richard(at)bcchapel.org>

Subject: Unusual cable ends

To: kolb-list(at)matronics.com

Date: Friday, May 20, 2011, 11:45 AM



 --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>



Non-Kolb related, but I expect somebody on the list can give me some useful info, so please bear with me and help me out.

Yesterday a friend and I went to look at a Kitfox that is being prepared for inspection and flight, and I was baffled by these cable end fittings. Years ago I saw another Kitfox that used these same cable end fittings for the rudder cables, one of them came loose and the pilot had a nasty ground loop and took the gear off it. Now I see them again on this airplane, so apparently Kitfox likes them, but I don't. The builder has done a good job, they were in the cable loop extremely tight with no give, but still - they just don't seem right to me. I don't like them.



So my question is: is this an acceptable  way to do cable end fittings? Does anybody else have any experience with these little round barrels with a groove in them?  Feedback? Is this actually an approved part or way of doing things? 

Thanks.



Richard Pike

MKIII N420P (420ldPoops)





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=340457#340457





Attachments: 



http://fo;  --> http://f=             - List Contributionsp;                     &bsp;--> http://www.======================





	
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slyck(at)frontiernet.net
Guest

Posted: Fri May 20, 2011 8:24 am Post subject: Unusual cable ends

Bill, I like the street sweeper idea.  How about a runway sweeper?



That looks like some kind of an electrical connector with grommet on the end.



Coincidentally I recently started replacing my tail wires.  I went the stock route with 3/32 galv cable, copper nicopress.

I bought a dandy (and priced right) swaging tool from Home Depot.  Just the right width to make two squeezes on a

3/32" sleeve.  I hesitated but then went with two sleeves after reading about Rich Pike's screwdriver incident in the archives.



Maybe the groundlooped Kitfox didn't squeeze the sleeves sufficiently?  Still, I would go with our old accepted method.

BB



On 20, May 2011, at 11:45 AM, Richard Pike wrote:



 	  Quote: 	
		   

 

 Non-Kolb related, but I expect somebody on the list can give me some useful info, so please bear with me and help me out.

 Yesterday a friend and I went to look at a Kitfox that is being prepared for inspection and flight, and I was baffled by these cable end fittings. Years ago I saw another Kitfox that used these same cable end fittings for the rudder cables, one of them came loose and the pilot had a nasty ground loop and took the gear off it. Now I see them again on this airplane, so apparently Kitfox likes them, but I don't. The builder has done a good job, they were in the cable loop extremely tight with no give, but still - they just don't seem right to me. I don't like them.

 

 So my question is: is this an acceptable way to do cable end fittings? Does anybody else have any experience with these little round barrels with a groove in them?  Feedback? Is this actually an approved part or way of doing things? 

 Thanks.

 

 Richard Pike

 MKIII N420P (420ldPoops)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=340457#340457

 

 

 

 

 Attachments: 

 

 http://forums.matronics.com//files/100_1402_large_226.jpg

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Fri May 20, 2011 8:54 am Post subject: Unusual cable ends

So my question is: is this an acceptable way to do cable end fittings? Does 

anybody else have any experience with these little round barrels with a 

groove in them?  Feedback? Is this actually an approved part or way of doing 

things?

Thanks.



Richard Pike

Richard P/Gang:



You talking about the sleeve or the round cable thimble?



For cables, I would use nothing except authentic nicopress sleeves.



The round cable thimble...I use them on my tail wires.  The work much better 

than the normal cable thimble when mating with a tang.



john h

mkIII

Titus, Alabama

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_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

Richard Pike

Joined: 09 Jan 2006
Posts: 1670
Location: Blountville, Tennessee

Posted: Fri May 20, 2011 10:01 am Post subject: Re: Unusual cable ends

 	  John Hauck wrote: 	
		  

Richard P/Gang:



You talking about the sleeve or the round cable thimble?



For cables, I would use nothing except authentic nicopress sleeves.



The round cable thimble...I use them on my tail wires.  The work much better than the normal cable thimble when mating with a tang.



john h

mkIII

Titus, Alabama 	




I'm talking about the round cable thimble, and I can see them working fine for something like tail wires. My Easy Riser used them for both flying and landing wires, but in both your situation and the Riser, they do not move, so are not subjected to any twisting loads that might slide the cable around the thimble. 



The application that Kitfox uses is for rudder cables, both at the rudder end and at the pedal end where they have to pivot, and are constantly subjected to twisting loads. It seems that in that application, eventually the cable will start to pivot around the thimble. That is what concerns me.



Richard Pike

MKIII N420P (420ldPoops)



PS: How do you mate them to the tang? An AN-3 bolt? Got a picture?

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Fri May 20, 2011 10:23 am Post subject: Unusual cable ends

Richard Pike

MKIII N420P (420ldPoops)



PS: How do you mate them to the tang? An AN-3 bolt? Got a picture?





Yes...made a fork with 3/16 washers/bolt/nyloc and an additional tang.



I'll try to remember to make a photo when I go back over to the airstrip to 

load the mkIII.



Looks like I am going to get out of here in the morning.  Only "iffy" 

weather is near my RON at Neosho, MO, tomorrow night.  May run into some 

rain and snow in SW Wyoming, but temps are forecast high in the 50's.  I 

think that will be doable.



john h

mkIII

Titus, Alabama

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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

jbhart(at)onlyinternet.ne
Guest

Posted: Fri May 20, 2011 6:23 pm Post subject: Unusual cable ends

At 08:45 AM 5/20/11 -0700, you wrote:

 	  Quote: 	
		  



So my question is: is this an acceptable way to do cable end fittings? Does anybody else have any experience with these little round barrels with a groove in them?  Feedback? Is this actually an approved part or way of doing things? 

Thanks.




	




Richard



Challengers use this type of termination on the cables inbetween the landing 

gear legs.  The fellow who checked me out years ago in his Challenger, said 

his failed regularly.  He built a fixture and made them up in mass.  I 

suggested to him that he not slide the nicopress quite so close to the the 

collar it would help releave the stress by trying to make a right angle bend 

in the cable.  He said he was afraid the cable could pop off the collar.  I 

countered with the suggestion that he add a fender washer to keep the cable 

in place.



I know the landing gear puts much more stress on the cable than would a 

rudder cable.  



On my mod to stiffen the FireFly landing gear, I made my own ferrels out of 

aluminum tubing.  So far no problems. 



Jack B. Hart FF004

Winchester, IN

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racerjerry

Joined: 15 Dec 2009
Posts: 202
Location: Deer Park, NY

Posted: Sat May 21, 2011 4:02 am Post subject: Re: Unusual cable ends

AN111 cable bushings (pictured here) are allowed per AC 43.13-1B, paragraph 7-147, as illustrated in figure 7-12(c).

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Jerry King

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