Date   

Re: nylaflow question

Jay Scheevel
 

Thanks. This explains some failures resulting in hot areas. I have constructed my gear legs such that there is a internal channel in the trailing edge of each gear leg, so that the tubing can slide through for replacement purposes. Should be easy to do routine replacement as nescessary. Could also go with Charlie's recommendation of steel lines. :-)

Cheers,
Jay


Re: nylaflow question

Mark Robinson
 

Nylaflow becomes brittle over time - accelerated by exposure. I replace the flexed and exposed sections on my Lancair 235/290 every few years (PM). It WILL fail, eventually. I replaced the fixed sections with alum tubing, so periodic replacement of the nylaflow sections is quick and easy.

Nylaflow is very inexpensive. Why take a chance?

Here's a link to one of many references:

www.
angelfire.
com/ pa5/parag/CHAPTER5/CHAPTER5.pdf


Re: Q1/Quickie?

David J. Gall
 

Almost all of the metal parts are not documented in the plans. There was a sheet of 1/8" aluminum and some patterns for the builder to make parts from it, but all steel parts and all welded assemblies were undocumented. Also, aileron/elevator steel and aluminum tubings and spacers were not well documented even though some dimensions were listed for some of those parts. There's also a piece of 1/2" phenolic that had 4 or 5 precision holes reamed at the factory; there's no callout for those holes' diameters. And, of course, firewall forward, you'll be the designer.... :) Oh, and canopy dimensions!


Re: nylaflow question

One Sky Dog
 

Jay,

I once did creep testing on carbon filled nylon. Turns out we were driving off the water that is part of nylon, not a chemist do not ask. The solution to our problem was soak in hot water for 24 hr.

Maybe the nylon stored hot and dry might be an issue?

Personally 1 eight foot 3/16 stainless steel DOT approved line connected to SS Over braid flex lines on the ends works for me. It is so heavy compared to nylasill, but I can feel the difference and got rid of all my oozing leaks. I know it will hold up longer than me.

Regards,

Charlie





On Nov 4, 2015, at 9:00 AM, jay@... [Q-LIST] <Q-LIST@...> wrote:

Thanks Jim and Bruce. Good tips about the heat issue. I will put a short leader on the brake caliper using 303 reinforced hose, then use the existing nylaflow from there back to the master cylinders. About the old tube cracking..... Quite a while back, I had a high-end pair of hockey skates with uppers made from injection molded nylon. Didn't use them much, so they sat in the closet for a while. After about 10 years, I pulled them out to use them, and one of them cracked into pieces. Other one was just fine. I think there may be some issues with batches of cured nylon breaking down over time, maybe because of bad formulation or something. Maybe Charlie Johnson, or Micheal Bergen know something about this.

Cheers,
Jay


Re: nylaflow question

Jay Scheevel
 

Thanks Jim and Bruce. Good tips about the heat issue. I will put a short leader on the brake caliper using 303 reinforced hose, then use the existing nylaflow from there back to the master cylinders. About the old tube cracking..... Quite a while back, I had a high-end pair of hockey skates with uppers made from injection molded nylon. Didn't use them much, so they sat in the closet for a while. After about 10 years, I pulled them out to use them, and one of them cracked into pieces. Other one was just fine. I think there may be some issues with batches of cured nylon breaking down over time, maybe because of bad formulation or something. Maybe Charlie Johnson, or Micheal Bergen know something about this.

Cheers,
Jay


Re: nylaflow question

Richard Thomson
 


Re: Q1/Quickie?

Rich Gillen
 

What is not included in the Q1 Plans, needed to build a Q1/Quickie?
 
Is there a list, photo's of the parts?
 
Thanks
Rich


Re: nylaflow question

Jim Patillo
 

No problems with my nylaflow tubing either. It's held up well.

Brad Olsen however had one come apart on the Q200 he bought from Tom Moore on landing. Could have been ugly but wasn't.

Failure was due to a nylaflow line being to close to heat in the wheel pant.

Jim Patillo

Q200 - N46JP
1200 +


Re: nylaflow question

John Loram <johnl@...>
 

8 years ago when I finally hooked up the brake system after 15 years of sitting around, the Nylaflow cracked like dry wood. I don’t know if this is because the brake fluid acts to preserver the flexibility, but I had to replace both runs. I confess it has given me some concern and it good it hear that mine was an isolated incident.

-john-

 

From: Q-LIST@... [mailto:Q-LIST@...]
Sent: Tuesday, November 3, 2015 9:17 AM
To: Q-LIST@...
Subject: [Q-LIST] nylaflow question

 

 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building

 


Re: nylaflow question

Jay Scheevel
 

Thanks guys. I appreciate the input. Sounds like it is more than robust for braking. I have been reading standard FAA TSO recommendations on pressure limits for braking systems, and it seemed that the published values for nylaflow working pressure of 960 psi and burst pressure of 2500 were below the recommendations, but since it works great for all of you, that is more than good enough for me! Thanks again.

Cheers,
Jay


Re: nylaflow question

mylittlemgb@...
 

The stuff is great. The only time I have had an issue was with the retract system on my TC2 and it was all my fault and was easy to repair other then cleaning out the type 4 fluid from behind the seat.


Re: nylaflow question

Bruce Crain
 


Re: nylaflow question

Paul Fisher
 

Jay - just a data point.  I have NOT had one burst (yet?!?) in over 1,500 flight hours across 25+ years.  I installed the nylaflow per plans (Q-200, tail dragger).

Paul

On Nov 3, 2015 11:17 AM, "jay@... [Q-LIST]" <Q-LIST@...> wrote:

 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building



Re: nylaflow question

Mike Dwyer
 

Hi Jay.
The tri airplanes likely have more issues.  Us tail daggers can't just clamp on the brakes.  There is some mil spec fluid with a much higher flashpoint.  I got some in the hanger if you can't figure out the number by a Web sesrch.  Never had a line bust.
Mike Q200

On Nov 3, 2015 12:17 PM, "jay@... [Q-LIST]" <Q-LIST@...> wrote:

 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building



Re: nylaflow question

Jerry Marstall <jnmarstall@...>
 

Used on my brake system for 20 years. No problems.  Jerry



Sent from my Verizon Wireless 4G LTE smartphone


-------- Original message --------
From: "Sam Hoskins sam.hoskins@... [Q-LIST]" <Q-LIST@...>
Date: 11/03/2015 12:46 PM (GMT-05:00)
To: Quickie List <Q-LIST@...>
Subject: Re: [Q-LIST] nylaflow question

 

Not here.  That stuff seems to hold up really well. 

Sam

On Tue, Nov 3, 2015 at 11:17 AM, jay@... [Q-LIST] <Q-LIST@...> wrote:
 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building




Re: nylaflow question

Sam Hoskins
 

Not here.  That stuff seems to hold up really well. 

Sam

On Tue, Nov 3, 2015 at 11:17 AM, jay@... [Q-LIST] <Q-LIST@...> wrote:
 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building




nylaflow question

Jay Scheevel
 

Has anyone had a nylaflow line burst on them under normal operations (when used for brake lines)? I am specifically asking about the 3/16" translucent line. If this has happened to you, can you please tell me the specifics, such as the time-in-service, location of the failure, etc. Thanks!

Cheers,
Jay Scheevel, Tri-Q still building



Dragonfly for sale

Patrick Panzera
 


Re: Steve Bennett's passing

Jerry Marstall <jnmarstall@...>
 

Thanks Doug.  How is your CX coming? J



Sent from my Verizon Wireless 4G LTE smartphone


-------- Original message --------
From: "hawkidoug@... [Q-LIST]" <Q-LIST@...>
Date: 10/28/2015 9:47 AM (GMT-05:00)
To: Q-LIST@...
Subject: [Q-LIST] Re: Steve Bennett's passing

 

Jerry - Linda's address is: 7011 N 160th Ave, Bennington, NE 68007


Doug Humble


Re: Steve Bennett's passing

hawkidoug@...
 

Jerry - Linda's address is: 7011 N 160th Ave, Bennington, NE 68007


Doug Humble