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  #1  
Old 01-06-2019, 04:00 PM
Cirrus Man Cirrus Man is offline
 
Join Date: Feb 2013
Location: Carlsbad, CA
Posts: 21
Default RV-12 Pitot Tube location

I have a RV-12 with a Viking engine that does not allow for a Pitot tube to be installed in the nose.
Has anyone installed a heated AOA Pitot tube in any other location?
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  #2  
Old 01-07-2019, 12:57 AM
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randylervold randylervold is offline
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Join Date: Dec 2004
Location: Mill Creek, WA
Posts: 576
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Not yet, but I will be. Should have some info on it in a month or so, plan to mount a Dynon heated pitot with AoA ports out in the left wing forward of the main spar. Still working out the parts and mount plan.
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Randy Lervold
RV-12iS, empennage/tailcone, wings & fuse on order
RV-3B, first flight 2007 - sold
RV-8, first flight 2001 - sold
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  #3  
Old 01-07-2019, 02:19 PM
12vaitor 12vaitor is offline
 
Join Date: Aug 2012
Location: Panama City, FL
Posts: 121
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As a reference design, I mounted a Dynon heated AOA pitot on a SafeAir1 mast just aft of the stall warning vane. I installed a doubler between the ribs that is riveted to both the ribs and the bottom skin. The heater control box is mounted on the stall switch access panel, this limits the wiring run to the two main power conductors (14 AWG). I wanted to maintain the removable wing capability, so the wire routing and two pressure tubes go to the first spar lightening hole then aft of the spar to the wing root. All wiring and pressure tubes are routed through a 1" thin wall tube inserted in and attached to the rib lightening holes. This routing also required a wing panel access hole to be added near the spar lightening hole. The F-1273-L baggage corner skin was modified with an access panel and holes for the two pressure tube quick connector bulkhead fittings and a 4-pin MIL-Circ connector for the pitot heater power. Routing the two pressure tubes aft to the Dynon ADAHRS is simple. Power is routed down the tunnel from a panel mounted Pitot Heat switch. To remove the wing, you pull the wing out about an 1.5" and disconnect the pitot power and two pressure lines.

I asked Van's about drilling the spar for two AN bulkhead connectors to route the pressure line and they did not recommend it, hence routing via the lightening holes. All the mods were done after the wing was built. I have seem some other examples where the mods are done on an open wing, looks a lot easier.

Hope this helps.

John Salak
RV12 N896HS
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  #4  
Old 01-07-2019, 05:04 PM
rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 361
Default Left wing

I installed a Garmin GAP26 heated pitot in my left wing in bay just outboard of the Van's stall warner and installed my heater control box in the stall warner bay to allow using the existing access. I ran my AOA, Pitot hoses, and wiring through 0.750 snap rings with a spare pull string.

It works very well.
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Ron Gawer

- RV10, N1530G (reserved). Empennage in progress.
- RV12, N975G, "The Commuter"

Last edited by rongawer : 01-07-2019 at 05:09 PM.
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  #5  
Old 01-09-2019, 06:27 AM
Handclutch Handclutch is offline
 
Join Date: Feb 2015
Location: Bendigo, Australia
Posts: 71
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I'm planning to install a Gretz heated pitot in a flying aircraft and have been trying to figure out where to put it - access for installation is limited. My latest thinking is to attach it to the stall warning access panel. The backing plate for the Gretz mast fits the panel nicely and it's more rigid than the lower skin further back towards the spar. It would also be fairly easy to add a stiffener inside the wing outboard of the panel. The control unit would be just behind the access panel with connectors to allow the panel/pitot to be removed. The pitot would be about 4" from the wing leading edge. I had been concerned about having it so far forward but Dynon recommend 2" - 12" behind the leading edge. (I know it isn't a Dynon but they are all very similar.)

Any thoughts?

Jack
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  #6  
Old 01-10-2019, 04:44 AM
AJSWA AJSWA is offline
 
Join Date: Sep 2011
Location: Paraburdoo Western Australia
Posts: 51
Default Pitot relocation

Quote:
Originally Posted by Cirrus Man View Post
I have a RV-12 with a Viking engine that does not allow for a Pitot tube to be installed in the nose.
Has anyone installed a heated AOA Pitot tube in any other location?
One option that works for us, (Non heated) both Pitot and AOA using 2 of the Vans self align quick release fittings.
4 X FLF-00012 - Bulkhead quick connect fittings. $10.65 each
2 X FLF-0015 - Guide adaptor. FLF-00015 $15.00 each
2 X AT6-049X1/4 – Aly tube AT6-049X1/4X2 “Aluminum tube rigid 2 inch” $1.40

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Andrew
RV 120573

Last edited by AJSWA : 01-11-2019 at 04:31 AM. Reason: Add additional pics and text
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  #7  
Old 01-10-2019, 07:36 AM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 810
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Quote:
Originally Posted by AJSWA View Post
One option that works for us, (Non heated) both Pitot and AOA using 2 of the Vans self align quick release fittings.

Do you know Van's name for the Quick Release or their part number? I checked Van's site and couldn't find it.

Also, what do you have behind the rib to secure the 1/4" tubing?
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Tom
Port Orange, Fl
RV-12 N121TK ELSA #120845; first flight 06/10/2015
RV-12 N918EN ELSA #120995 Eagles Nest Project
SPA Panther N26TK in progress

Last edited by tomkk : 01-10-2019 at 07:53 AM.
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  #8  
Old 01-10-2019, 09:08 AM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 31
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Notification dated December 12, 2016 for retrofitidentifies the parts.

https://www.vansaircraft.com/pdf/Not...2016-12-14.pdf
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  #9  
Old 01-11-2019, 04:58 AM
AJSWA AJSWA is offline
 
Join Date: Sep 2011
Location: Paraburdoo Western Australia
Posts: 51
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Quote:
Originally Posted by tomkk View Post
Do you know Van's name for the Quick Release or their part number? I checked Van's site and couldn't find it.

Also, what do you have behind the rib to secure the 1/4" tubing?
Part numbers of fittings now added to original post, as well as the extra 2 pictures. The coloured cable ties are for identification only (not clamping) from the previous connection system used (Quick release but not auto release like the Vans system) prior to the Vans AOA - NOTIFICATION 16-12-14.
The Vans AOA kit is only for one hose, so there was a bit of careful measuring to make the new fitting bracket and work out the correct positioning of the second fittings.
FYI - I also place dust and bug protectors over the wing and fuselage connector fittings when the wings are removed and aircraft stored.
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Andrew
RV 120573
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  #10  
Old 01-11-2019, 07:14 AM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 810
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Thanks Andrew for the part numbers & extra pics. Are these Van's part numbers? I couldn't find when I searched the Van's site. Or maybe they're available and just not listed online and need a phone call to order?
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Tom
Port Orange, Fl
RV-12 N121TK ELSA #120845; first flight 06/10/2015
RV-12 N918EN ELSA #120995 Eagles Nest Project
SPA Panther N26TK in progress
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