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  #1  
Old 03-25-2021, 08:33 AM
nohoflyer nohoflyer is offline
 
Join Date: Sep 2018
Location: Brooklyn, NY
Posts: 32
Default Wing Construction

The wing construction is anything but straight forward.

The plans do not include things like wiring for lights and a specilized pitot tube which I've seen on other's builder logs.

Now it seems that I need to contact Dynon for a pitot tube idea and FLYLEDs for lighting wiring.

What else am I missing?
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  #2  
Old 03-25-2021, 08:43 AM
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MacCool MacCool is online now
 
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If you're using the Dynon pitot, make sure you run both pitot and AoA tubing. If you have any thought that you or somebody someday might want it certified IFR, then get the Dynon heated pitot. It is vastly simpler to run that tubing and install the wiring/heating unit while building the wing rather than after-the-fact.

As to wingtip wiring...most builds I've seen run some Van's 3/4 inch corrugated tubing/conduit the full length of each wing for servo and lighting wiring.
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  #3  
Old 03-25-2021, 09:12 AM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
 
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Location: Dogwood Airpark (VA42)
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Default

Don’t over think this:
- For Dynon, buy the heated pitot/AOA tube and mount. Follow the installation instructions that come with it. I mount mine on the wing bay just outboard the aileron bell crank bay as this keeps the 1/4” tubes and wires out of the bell crank area.
- For wire, leave the wire holes in the ribs as is. Do not install the plastic grommets included in the kit. Instead get a couple of length of 1/2” cold water plastic pipe from Lowes. This pipe is a perfect fit for the holes and is big enough for all the wires you will need (pitot heat, Landing Lights and NAV/Strobes and either the AOA or Pitot 1/4” nylon tube on the left wing, Autopilot servo, wing tip VOR/LOC/GS antenna and Nav/Strobes on the right wing). For the second 1/4” pitot tube on the left wing run it via 1/4” ID snap bushings installed in the rib tooling holes.
- For most of use running LED NAV/Strobes a single three #20 conductor shielded wire does the job (Nav Power, strobe power, strobe sync on the three conductors, common ground on the shield).
- For LED landing lights usually a single #18 wire for power.
- For the Pitot Heat a single #16 wire for power, a #22 for signal.
- For the left wing a single #14 wire back to the firewall for common ground (Landing Lights and Pitot Heat). For the right wing a single #18 wire back to the firewall for landing light ground.

If you are running 747 type landing lights, up the wire gauge as needed.

I find the Dynon AOA stall audio alerts to be a perfect tool. I do not install the Van’s Stall Warning. I fill up the leading edge holes that are there for this stall warning.

Carl
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  #4  
Old 03-25-2021, 09:21 AM
PhatRV PhatRV is offline
 
Join Date: Mar 2018
Location: Buena Park, California
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Default

I think it is helpful to orient the perspective of building the legacy Vans aircraft in that you are building the primary structure. The rest of the electrical, avionics, engines, etc are all customizable and the main construction plan does not address these issues. You need to refer to the OP drawings to get ideas of what to be expected. It is also helpful if you can visit other builders in the area, and peruse different build logs. Since you have a lot of experience flying different GA aircraft, you are ahead of the game in term of knowing what you want in your avionics, lightings, etc.

For the wing wiring, I just use snap fittings at the bottom ribs. Running wire, even when the wings are closed, is really easy. I use a long rod to fish the wire but you can get the professional fishing tap reel from Home Depot.

I installed the roll servo, and the Dynon pitot tube before closing the wing. However, there is nothing difficult about installing them after the wings are closed. Slightly less space to work around but they are mounted directly next to the wing access holes. I had to reinstalled my roll servo due to not-so-perfect wiring connector. I am waiting to install all wingtip nav lighting at the end of the build. Again, fishing wires is easy, it is a straight line from root rib to the tip rib. In general the wings accessories are simple. Wait until you start building the fuselage and the non-documented accessories will add up fast.
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  #5  
Old 03-25-2021, 10:04 AM
nohoflyer nohoflyer is offline
 
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Default

All excellent replies.

Thank you.
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  #6  
Old 03-25-2021, 03:41 PM
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HAL Pilot HAL Pilot is offline
 
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I had a bear of a time with the Aileron torque tubes.

Vans recommends painting the inside and assembling the tubes wet since waiting to let the paint dry can make the fit not work. Assembling wet is a mess. So just wondering what folks have done for these.

For my next plane (don't tell my wife)
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  #7  
Old 03-25-2021, 06:02 PM
PhatRV PhatRV is offline
 
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Quote:
Originally Posted by HAL Pilot View Post
I had a bear of a time with the Aileron torque tubes.

Vans recommends painting the inside and assembling the tubes wet since waiting to let the paint dry can make the fit not work. Assembling wet is a mess. So just wondering what folks have done for these.

For my next plane (don't tell my wife)
I Alodine the interior and exterior of all my aluminum torque tubes.
__________________
RV8 standard build: Empennage 99% completed
Wing -- Closed
Fuselage -- Canopy Done. Fiberglass 80%
Avionics Installation -- 90%
Firewall Forward -- Prep for cowl install
Electrical -- 90%

Donation paid through 2021
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  #8  
Old 03-25-2021, 08:19 PM
David Z David Z is offline
 
Join Date: Aug 2010
Location: Thunder Bay Ontario
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Default Conduit Runs

This really should be included in the plans: https://www.vansaircraft.com/faq-tec...-in-the-wings/
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  #9  
Old 03-25-2021, 08:50 PM
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MacCool MacCool is online now
 
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Quote:
Originally Posted by David Z View Post
This really should be included in the plans: https://www.vansaircraft.com/faq-tec...-in-the-wings/
This, for sure. I’m not a builder, but 10 years after the fact, as avionics and other such electronics evolve, I reap the benefits of the builder’s decision to run such conduit. I wish he’d run AOA tubing to the pitot at the same time.
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  #10  
Old 03-26-2021, 12:46 PM
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HAL Pilot HAL Pilot is offline
 
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Sorry about the confusion I was referencing this assembly. The center tube needs to slide well inside the WD-1014 or CS-00009 to get the assembly to fit then pull it back to match bolt holes. If the inside of these steel control links are painted there is no room to do this hence the recommendation to do it while wet, but wow what a mess if its wet.
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__________________
Pete

RV14A Tail kit 95%
Wing kit 95%
Fuselage QB stuck in China virus corrosion purgatory

RV 14 WIKI in Drop Box

https://www.dropbox.com/sh/xu5p6f4l7...bU0ck0pJa?dl=0

please purchase the thumb drive Vans offers. I DO NOT want to take away from sales flow or get the WIKI Killed.

---For Edit Access drop me a PM with your Email address.

EAA 1300
Donation Paid 18,19,20,21 Military exempt
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