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  #1  
Old 12-13-2021, 02:15 PM
rv6ehguy rv6ehguy is offline
 
Join Date: Jan 2007
Location: Toronto, Ontario
Posts: 220
Default Waxed Lacing cord vs TyWraps?

Good day fellow RV aviators,
Iíve never been a fan of the nylon Ty Wraps and prefer to use the waxed lacing cord. I know that you can use the Ty Wraps under the cowling but over time those Tys become brittle and depreciate. Can the lacing cord be used in the engine environment. Apart from the longer installation time, whatís the down side of using lacing cord? Thanks for your time.
John Van Lieshout
RV6A QB 85%
AeroSport Power IO-375 M1S 195hp
(Looking for a prop)
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  #2  
Old 12-13-2021, 02:40 PM
Mike S's Avatar
Mike S Mike S is offline
Senior Curmudgeon
 
Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 16,318
Default

I have used the lacing cord under the cowl without any problems.

There is also a newer design zip tie made for aircraft use, has cushioned edges and is releasable as well as high temp use. Grip Lock brand. Amazon has them. https://griplockties.com/
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Mike Starkey
VAF 909

Rv-10, N210LM.

Flying as of 12/4/2010

Phase 1 done, 2/4/2011

Sold after 240+ wonderful hours of flight.

"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."

Last edited by Mike S : 12-13-2021 at 02:46 PM.
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  #3  
Old 12-13-2021, 03:55 PM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 2,519
Default

John - to put it as bluntly as I can... There is NO down-side to using lacing cord. Only up-sides.

To answer your specific question, yes, lacing cord is rated for firewall-forward use. Clearly one needs to turn the brain on before using it. It takes really special materials to live happily beside a glowing hot exhaust pipe - neither lacing nor zip ties will be happy there. Some common sense, when liberally applied, will guide where you route wire bundles, so keeping them away from hazards will generally keep them located in areas where lacing cord is a perfect choice.

Just for fun, make up a bundle of wires using zip ties. Any bundle of tefzel wires. Heck, you can even zip tie a coil of wire you've just purchased. Now leave those zip ties in place and tie a good lacing cord not beside them. You'll be amazed to see those once-tight zip ties will now be loose. Lacing cord is just better than zip ties when it comes to holding a wire bundle together.

For those who say "but Boeing uses zip ties", yes, that's absolutely true. But Boeing also bills for every person-hour of labour that goes into their product. We don't have that concern with our amateur-built airplanes, so lacing cord is the way to go.
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  #4  
Old 12-13-2021, 04:01 PM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,970
Default ...and

I would like to see a video of y'all doing lacing while on your back in the footwell of a -10, working on a 1" diameter bundles of wires with a flashlight in your mouth...
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Aerospace Engineer '88

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  #5  
Old 12-13-2021, 04:47 PM
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rleffler rleffler is offline
 
Join Date: Jun 2006
Location: Delaware, OH (KDLZ)
Posts: 4,329
Default

Quote:
Originally Posted by rocketman1988 View Post
I would like to see a video of y'all doing lacing while on your back in the footwell of a -10, working on a 1" diameter bundles of wires with a flashlight in your mouth...
Never will happen!

I have enough problems seeing what Iím lacing with bifocals and my hands are busy lacing, flashlight in my mouth, so Iím not sure how to aim the Video camera.
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  #6  
Old 12-13-2021, 05:09 PM
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Laird Laird is offline
 
Join Date: Feb 2007
Location: SoCal
Posts: 177
Default Oil Soak

One down side to lacing cord in the engine compartment is that it does soak up oil over time and tend to loosen. If it does, I usually end up replacing it with some new lacing cord while the cowling is off for it CI.

At least that's my experience with my RV6 over the last 20 years and 2000 hrs.

Laird
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  #7  
Old 12-13-2021, 05:12 PM
RV7A Flyer's Avatar
RV7A Flyer RV7A Flyer is offline
 
Join Date: Jul 2013
Location: US
Posts: 2,656
Default

Quote:
Originally Posted by rocketman1988 View Post
I would like to see a video of y'all doing lacing while on your back in the footwell of a -10, working on a 1" diameter bundles of wires with a flashlight in your mouth...
Is it tougher than a -7? I don't have a video, though, so....
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  #8  
Old 12-13-2021, 05:16 PM
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RV6_flyer RV6_flyer is offline
 
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Location: NC25
Posts: 3,880
Default

I like lacing cord for NEW installations where it is easy to get at. I use TyWraps typically on rework or where it is just too hard for lacing cord.
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NC25 RV-6
Flying
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Building RV-8 S/N: 80012

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Last edited by RV6_flyer : 12-14-2021 at 07:17 PM. Reason: spelling
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  #9  
Old 12-13-2021, 05:23 PM
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bkc3921 bkc3921 is offline
 
Join Date: Jul 2007
Location: DuBois,Il
Posts: 180
Default The word of the day is....

The word is Esoteric! Intended or likely to be understood by a small number of people with a specialized knowledge......like builders!

Forget all of the easy installation issues...the fact is lacing cord just looks COOL to me...like it took time, effort, some skill, etc..

It may sound silly, but lacing cord on a build reminds me of the nostalgia factor surrounding airplanes and the early days of aviation...not unlike goggles, silk scarves, etc....

Yeah, I may be crazy..but lacing cord rules!...Cheaper, better, cooler...Just do it....
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Brian K. Morrow
DuBois,Il
N433BC "Muttley" RV-7A Flying
N433BM "Dastardly" RV-12is EMP, FUSE, WINGS, Done...FINISH and POWER PLANT in PROGRESS
Official Repeat Offender
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  #10  
Old 12-13-2021, 05:35 PM
Lenny Iszak's Avatar
Lenny Iszak Lenny Iszak is offline
 
Join Date: Sep 2008
Location: Palm City, FL
Posts: 410
Default

Lacing cord holds up much better under the cowling than even the high-temp ty-raps. Takes more time to install, but it's worth it.
Once you tie a few hundred of them you can do it with your eyes closed, upside down, under the panel with a flashlight in your mouth. Wait. Whaat?

Lenny

Quote:
Originally Posted by rv6ehguy View Post
Good day fellow RV aviators,
Iíve never been a fan of the nylon Ty Wraps and prefer to use the waxed lacing cord. I know that you can use the Ty Wraps under the cowling but over time those Tys become brittle and depreciate. Can the lacing cord be used in the engine environment. Apart from the longer installation time, whatís the down side of using lacing cord? Thanks for your time.
John Van Lieshout
RV6A QB 85%
AeroSport Power IO-375 M1S 195hp
(Looking for a prop)
__________________
Lenny Iszak
Palm City, FL
2014 RV-10, N311LZ - 775 hrs
OnSpeed development team
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