Matronics Email Lists :: View topic - Reusing 3/8" Flares...

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Reusing 3/8" Flares...

Matronics Email Lists Forum Index -> RV-List

View previous topic :: View next topic

Author Message

Matt Dralle
Site Admin

Joined: 08 Nov 2005
Posts: 26320
Location: Livermore CA USA

Posted: Sun Jul 10, 2011 7:04 pm Post subject: Reusing 3/8" Flares...

Dear Listers,



I pulled out all of the fuel selector valve and fuel pump goodies from the old fuselage today.  I disassembled all of the various flare ends and cleaned up all the Fuel Lube with lacquer thinner making sure not to get any in the pump or valve or transducers.  All but two of the fuel lines seem to be reusable and don't show any signs of damage from the Mishap.  I really don't want to have to recut, rebend, and reflare all of these if I don't have to.  



What's the common knowledge on reusing the flares on the fuel and brake lines?



Am I just asking for a bunch of leaks if I put these back into service now that I've unscrewed them?



Thanks!



Matt



-

Matt Dralle

RV-8 #82880 N998RV "Ruby Vixen"

http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log

http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log

http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel

Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap...

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

2008.10.04_-_RV-8_-_Fuel_System_Plumbing_(7).jpg

Description:

Filesize:

133.43 KB

Viewed:

1955 Time(s)

2008.10.04_-_RV-8_-_Fuel_System_Plumbing_(7).jpg

2008.10.04_-_RV-8_-_Fuel_System_Plumbing_(9).jpg

Description:

Filesize:

151.55 KB

Viewed:

1955 Time(s)

2008.10.04_-_RV-8_-_Fuel_System_Plumbing_(9).jpg

_________________
Matt Dralle
Matronics Email List Administrator

BGray(at)glasair.org
Guest

Posted: Sun Jul 10, 2011 7:45 pm Post subject: Reusing 3/8" Flares...

As long as the flares and the B nut are undamaged, they can be reused.



Bruce

WWW.Glasair.org 



--

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

ralphmariafinch(at)gmail.
Guest

Posted: Sun Jul 10, 2011 7:51 pm Post subject: Reusing 3/8" Flares...

I don't have definitive answers to your questions...but this is important

enough to get some. Call John Schwaner of Sacramento Skyranch and ask him to

be sure.  He won't commit to an answer (liability), but just ask for his

opinion...what he might do.



That said, here's a couple of thoughts.  First, on flared connections, I

don't think fuel lube does a thing. Doesn't hurt but doesn't help the seal.

Second, I'm *guessing* Al is malleable so it can be reused...up to a point.

If the flared end is tightened and relaxed in a lot of cycles you will

fatigue it.



But call John or another real experienced expert for the right answer.



Ralph Finch



--

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

dave.saylor.aircrafters(a
Guest

Posted: Sun Jul 10, 2011 8:24 pm Post subject: Reusing 3/8" Flares...

Matt,



As long as they're in good shape you'll be fine.  This being the first

time off I wouldn't worry too much about them being worn out.  Look at

the recent thread about brake lines, but something tells me you've

already got hoses to the calipers.



Dave Saylor

AirCrafters

140 Aviation Way

Watsonville, CA 95076

831-722-9141 Shop

831-750-0284 Cell



On Sun, Jul 10, 2011 at 8:02 PM, Matt Dralle <dralle(at)matronics.com> wrote:

 	  Quote: 	
		  

 Dear Listers,



 I pulled out all of the fuel selector valve and fuel pump goodies from the old fuselage today. Â I disassembled all of the various flare ends and cleaned up all the Fuel Lube with lacquer thinner making sure not to get any in the pump or valve or transducers. Â All but two of the fuel lines seem to be reusable and don't show any signs of damage from the Mishap. Â I really don't want to have to recut, rebend, and reflare all of these if I don't have to.



 What's the common knowledge on reusing the flares on the fuel and brake lines?



 Am I just asking for a bunch of leaks if I put these back into service now that I've unscrewed them?



 Thanks!



 Matt



 -

 Matt Dralle

 RV-8 #82880 N998RV "Ruby Vixen"

 http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log

 http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log

 http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel

 Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap...

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

chaskuss(at)yahoo.com
Guest

Posted: Mon Jul 11, 2011 3:12 am Post subject: Reusing 3/8" Flares...

Matt,

 Generally, you can re-use the fitting. If in doubt, you can add conical, copper sealing washers between the flare and the AN fittings to improve the seal. See



http://lastminutemall.com/secoseals/SECO_7_Copper_Seals.html



http://www.ap100.com/



or go to Aircraft Spruce's site and do a search for : 04-05006 DEL FITTING SEAL 3/8" OD



Charlie Kuss



--- On Sun, 7/10/11, Matt Dralle <dralle(at)matronics.com> wrote:



 	  Quote: 	
		   From: Matt Dralle <dralle(at)matronics.com>

 Subject: Reusing 3/8" Flares...

 To: rv-list(at)matronics.com, rv8-list(at)matronics.com, rv7-list(at)matronics.com

 Date: Sunday, July 10, 2011, 11:02 PM

 

 Dear Listers,

 

 I pulled out all of the fuel selector valve and fuel pump

 goodies from the old fuselage today.  I disassembled

 all of the various flare ends and cleaned up all the Fuel

 Lube with lacquer thinner making sure not to get any in the

 pump or valve or transducers.  All but two of the fuel

 lines seem to be reusable and don't show any signs of damage

 from the Mishap.  I really don't want to have to recut,

 rebend, and reflare all of these if I don't have to.  

 

 What's the common knowledge on reusing the flares on the

 fuel and brake lines?

 

 Am I just asking for a bunch of leaks if I put these back

 into service now that I've unscrewed them?

 

 Thanks!

 

 Matt

 

 -

 Matt Dralle

 RV-8 #82880 N998RV "Ruby Vixen"

 http://www.mattsrv8.com - Matt's Complete RV-8

 Construction Log

 http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild

 Log

 http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV

 YouTube Channel

 Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing

 Mishap...

- The Matronics RV-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV-List

Display posts from previous:

	Matronics Email Lists Forum Index -> RV-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum