|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

08-21-2019, 07:43 AM
|
|
|
|
Join Date: Jan 2015
Location: Kansas
Posts: 169
|
|
Any reson not to do it this way? (Pitot connections)
I've noticed that most builders are flaring the ends of the pitot/AOS assembly. I'm wondering if a push to connect is acceptable? I'm using a Garmin GAP-26 heated pitot. According to the installation manual, section 5.3, revision AJ, the minimum length for the tubes on the heated pitot is 8" to protect the non-metallic tubing from excessive heat.
If the tubing is greater than 8", do you see any reason not to use the fittings depicted below?

__________________
Dues Paid for 2020
RV-14
Empennage Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse joined and working on painting interior
Last edited by Reflex : 08-21-2019 at 08:00 AM.
|

08-21-2019, 07:58 AM
|
|
|
|
Join Date: Jan 2015
Location: Kansas
Posts: 169
|
|
Hoping the image shows up now.
I miss Tiny Pic!
__________________
Dues Paid for 2020
RV-14
Empennage Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse joined and working on painting interior
|

08-21-2019, 08:53 AM
|
|
|
|
Join Date: Jan 2016
Location: Southwest
Posts: 1,119
|
|
simpler
I just heated up the tubing with a heat gun, slide it on and safety wired. easy peasey.
I think garmin recommends a distance of the metal before terminating; and this distance is longer than a straight section could be, so the Pitot tubing needs to bend, so the 90 degree fitting may not be the best.
__________________
John S
WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Dues paid 2020, worth every penny
RV9A- Status:
Tail 98% done
Wings 98% done
Fuselage Kit 98% done
Finishing Kit 35% canopy done for now
Electrical 5% in work
Firewall Forward 5% in work
www.pilotjohnsrv9.blogspot.com
|

08-21-2019, 09:18 AM
|
|
|
|
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,189
|
|
Fitting
Were you able to find a push on fitting for the 3/16? aluminum tubing?
__________________
Bob
Aerospace Engineer '88
RV-10
Structure - 90% Done
Cabin Top - Aaarrghhh...
EFII System 32 - Done
297 HP Barrett Hung
ShowPlanes Cowl with Skybolts Fitted - Beautiful
Wiring...
Dues+ Paid 2019,...Thanks DR+
|

08-21-2019, 09:19 AM
|
 |
|
|
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
|
|
As long as your end-fitting can fit through the pitot mast and you can disconnect the tube fitting via the inspection plate, all is good.
I used a straight-run fitting to a ferrule-type connection to the tube, and left a service loop of tubing inside the wing to pull the entire pitot tube and connections down outside the wing and disconnect it that way.
__________________
Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
|

08-21-2019, 09:31 AM
|
|
|
|
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
|
|
Quote:
Originally Posted by Reflex
I've noticed that most builders are flaring the ends of the pitot/AOS assembly. I'm wondering if a push to connect is acceptable? I'm using a Garmin GAP-26 heated pitot. According to the installation manual, section 5.3, revision AJ, the minimum length for the tubes on the heated pitot is 8" to protect the non-metallic tubing from excessive heat.
If the tubing is greater than 8", do you see any reason not to use the fittings depicted below?

|
I am not seeing your image but I am using a push-on fitting with the same Garmin pitot heat tube and zero issues. I made sure to adhere to the 8" recommended metal tube.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
|

08-21-2019, 11:13 AM
|
|
|
|
Join Date: Nov 2017
Location: Orlando
Posts: 195
|
|
Question?
Sorry. Not meant to be a thread hijack. I haven't found a manual for the GAP-26 and wasn't going to buy the pitot just yet. I assume but pressure sources need to be routed to the cockpit area. Asking because I'll be closing up the left wing soon and sounds like I need to run another soft AL tube and probably dedicated conduit. Any thoughts, ideas, or other suggestions (that would save me from another case of the dumb-***) would be appreciated.
|

08-21-2019, 11:26 AM
|
|
|
|
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
|
|
Quote:
Originally Posted by Freemasm
Sorry. Not meant to be a thread hijack. I haven't found a manual for the GAP-26 and wasn't going to buy the pitot just yet. I assume but pressure sources need to be routed to the cockpit area. Asking because I'll be closing up the left wing soon and sounds like I need to run another soft AL tube and probably dedicated conduit. Any thoughts, ideas, or other suggestions (that would save me from another case of the dumb-***) would be appreciated.
|
If Garmin, you will need to run two sot or hard line, most people run soft lines. One is for your pitot tube and one for AOA. The AOA is not absolutely necessary but if using Garmin, then it would be a shame not to plumb that. I can hardly see a reason for a conduit, RV14 and many other models have small holes in the ribs for this usage.
Hope this helps.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
|

08-21-2019, 11:28 AM
|
 |
|
|
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
|
|
Quote:
Originally Posted by PilotjohnS
I just heated up the tubing with a heat gun, slide it on and safety wired. easy peasey.
I think garmin recommends a distance of the metal before terminating; and this distance is longer than a straight section could be, so the Pitot tubing needs to bend, so the 90 degree fitting may not be the best.
|
Heating up nylo tubing and pushing it onto a fitting will lead to the nylo tube cracking eventually. I've replaced plenty in the static system.
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
|

08-21-2019, 12:06 PM
|
|
|
|
Join Date: Jan 2015
Location: Kansas
Posts: 169
|
|
Quote:
Originally Posted by rocketman1988
Were you able to find a push on fitting for the 3/16? aluminum tubing?
|
Yes, Legris makes one. Part number 3109 55 11 available at MSC Direct. MSC's part number is 06108591. 3/16 tube x 1/8" NPT elbow.
Spoke to Legris/Parker tech. Fine for aluminum tubing.
About $8.
Fred
__________________
Dues Paid for 2020
RV-14
Empennage Complete (including fiberglass)
Wings complete (including fiberglass)
Fuse joined and working on painting interior
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 03:50 AM.
|