VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 10-18-2016, 03:23 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 154
Default Firewall fuel fitting

OK...page 31-05 has you clock the fitting at 20-deg from horizontal and apply sealant which I would assume will glue it in place. Then page 31-11 says clock it 5-deg from vertical (for a taildragger). My public school math sez this don't add up too good. Don't see anything in the gotchas list. Which is it?

Sort of related - would high-temp RTV be an acceptable substitute for this fitting and also the brake line firewall fittings as well? I have both RTV and tank sealant but only one requires me to mix up a batch.
__________________
James Hartline
Carrollton, GA 5GA2
RV-14 - Finish and FWF in progress
T-Bolt IO-390
Maule MX7-180
Reply With Quote
  #2  
Old 10-18-2016, 03:39 PM
jswareiv jswareiv is offline
 
Join Date: Dec 2006
Location: New Orleans, LA
Posts: 455
Default Fuel Fitting

Hey James,

It is the 5° for the taildragger. I'm not an expert on the ProSeal vs. RTV, but I would recommend the ProSeal. Did you ProSeal the tunnel yet? You could always do that at the same time, or even wait until you are ready to seal the firewall with ProSeal. I did mine at the 25° before the plans were changed and just had to adjust it and reseal. It's easy to get to until you mount the engine and then it's still not too bad. Just don't forget about it.
__________________
Stoney
First RV-14 Flight 04/17/2016
Serial #140087, N214SW
http://rvbuild214sw.com/
Dues paid to 2018.
Reply With Quote
  #3  
Old 10-18-2016, 03:43 PM
snopercod's Avatar
snopercod snopercod is online now
 
Join Date: Aug 2016
Location: Asheville, NC
Posts: 803
Default

Assuming this is a bulkhead fitting, you will want to use something that really secures it from rotating. Otherwise, you'll have to put a wrench on the back side when you tighten the B-nut up front. Not only does that mean two people, but access may be a problem. Ask me how I know...
__________________
(2017 dues paid)
Reply With Quote
  #4  
Old 10-18-2016, 03:49 PM
JHartline JHartline is offline
 
Join Date: Dec 2012
Location: Carrollton, GA 5GA2
Posts: 154
Default Pro seal it is

Thanks guys. I usually save up a couple of the small bits to do once I have a batch mixed up. I'll do this fitting, the brake lines, and the brake reservoir at the same time.

Baggage floor going in and next we'll be painting the cockpit. Woo-hoo!!
__________________
James Hartline
Carrollton, GA 5GA2
RV-14 - Finish and FWF in progress
T-Bolt IO-390
Maule MX7-180
Reply With Quote
  #5  
Old 05-06-2017, 04:43 PM
Tom023 Tom023 is offline
 
Join Date: Jul 2011
Location: Cypress, TX
Posts: 180
Default

Ok, just ran into this issue for the nose wheel version. Page 31-05 says 25 degrees from horizontal, page 31-11 says 40 degrees from vertical. Which is it?
__________________
RV14A #83
Wings, empennage and fuselage completed
Finish kit in progress
IO-390 Thunderbolt ordered
Reply With Quote
  #6  
Old 05-07-2017, 07:12 AM
TS Flightlines TS Flightlines is offline
 
Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 1,862
Default

The hose is installed to get around the nose gear mounts. Looking at page 49-02, looks like 5* for the 14, and 40* for the 14A. I'll defer to someone with a 14.

Proseal, RTV or firebarrier 2000

Tom
__________________
Tom Swearengen, TS Flightlines LLC
Teflon Hose Assemblies for Experimentals
Proud Vendor for RV1, Donator to VAF
RV7 Tail Kit Completed, Fuse started-Pay as I go Plan
Ridgeland, SC
www.tsflightlines.com
Reply With Quote
  #7  
Old 05-07-2017, 05:56 PM
Tom023 Tom023 is offline
 
Join Date: Jul 2011
Location: Cypress, TX
Posts: 180
Default

Thanks Tom I will move it to 40 and reseal. Easy to do at this stage. I Just installed your cabin fuel and brake lines this weekend. Absolutely perfect fit! Couldn't have been easier.
__________________
RV14A #83
Wings, empennage and fuselage completed
Finish kit in progress
IO-390 Thunderbolt ordered
Reply With Quote
  #8  
Old 05-07-2017, 08:05 PM
Tom Martin Tom Martin is offline
 
Join Date: Jan 2005
Location: Ontario, Canada
Posts: 1,288
Default

put a little red tape on it and wait until you actually hook up the hoses; I had to move mine slightly to take some tension out of the hose.
__________________
Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger under construction #153

Fairlea Field
St.Thomas, Ontario Canada, CYQS
fairleafield@gmail.com
Reply With Quote
  #9  
Old 06-20-2017, 09:22 AM
bobhope2505 bobhope2505 is offline
 
Join Date: Oct 2014
Location: Carmichael, CA
Posts: 44
Default

I found this thread when looking for the correct angle for the fuel line elbow through the firewall and noticed the other issue of RTV vs. Pro-Seal. For convenience I used RTV, but then my tech adviser, who is also a mechanical engineer, had me redo it. You can use RTV sealant IF you use the kind specifically for firewall applications. In the event of an engine compartment fire, it swells as it burns sealing off the cabin. The standard type will burn away and compromise the firewall.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 03:55 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.