Friday, May 7, 2021

Avionics Panel, Pito lines

 

RV14 Build April 21

Avionics Panel

Since the wings are going back to Vans I decided to install the pito lines into the fuselage and leave the extra to run into the wings after they are installed.

First I splices the static line in near the fuel pump. Ran 1 end the the AHRS and the other to a back up static source.

Back up static valve, just needs to have the hole drilled in the panel and installed. The switch doesn't take much to engage so Ill probably add a flip up red cover to make sure it doesn't accidentally turn on.

I ended up using a 90 degree fitting to the threaded T on the AHRS, the 90 put less stress on the tube connections.

Then ran it over to the G5.

Pito and static are installed. I need another 90 for the AOA and it will all be ready to run into the wings.

Pito Lines 3.5 hours

Section 33 Rudder and Brake System, Parking brake

 

RV14 Build April 21

Section 33 Rudder and Brake System

I decided to install a Matco parking brake and I finally made a decision on cable placement. This is the basic routing.

Cutting the cable to fit.

Making a mounting point I bent 1 of the edges over to add some rigitity.

Another view of the mounting plate.




Parking Brake 1.5

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QB Wing Corrosion/ Primer issue - Wing Dissassembly

 

RV14 Build April

QB Wing Re-Work

Vans and I have come to an agreement. They are going to send me a regular wing kit and I will keep all the interior parts I build like push rods and torque tubes. I get to keep the fuel tanks and they will ship me a new set of QB controls when they get them in. Now I need to tear the wings apart and get them ready for pick up. Good bye my finished wings.

Fuel tanks are off. They are always a bitch to get all the screws without stripping them.

Not easy working by myself to get these moved around, had a nice assist from my chair.

1 wing done 1 to go.

Trying to save the wiring.

Wings are headed back to vans.



Wing Disassembly 10 hours





Avionis Panel, Optional Ballenger O2 sensor

  

RV14 Build April

Avionics Panel

This probably isn't needed but after this article I got inspired.

Afterall I have already installed the 10 place circuit breaker panel for just an occasion. I ordered the kit and extra terminal ends so I could rewire with Mil Spec wire and have it be the correct length and because I like to do things the hard way I guess?

The connector on the sensor end you need a small flat head screwdriver to remove the pins. I could have reused the connector housing but didn't know that when I ordered it.

Making my harness. I spriced the ground from the controller and the sensor into 1 and ran it to the main grounding block.

View from the back looking forward. I just used hook and loop velco tape to hold it down for now.

The harness came wired for this ish. I had them install 5' of 3 contactor shielded cable on a GP slot. I dont need the HI just the GP3 and 3Lo. The ballenger manual has some confusion about where to hook the analog ground up to. Im going to try it in the 3Lo first and if that doesn't work ground it with the main grounding block.

Another view of the install.

Avionics Panel Ballenger 3.5 Hours




Avionics Panel ANL and Shunt

 

RV14 Build April

Avionics Panel

I Installed the doubler for the ANL and Shunt. Here is my basic plan and layout. Due to the size of the lug on the output side of the battery contacter I moved the copper bus bar from the ANL to the Starter contactor connected to the Battery contactor with another bus bar. I used up all my copper so I made the smallest #8 wire to connect the shunt and the ANL.

Installing the doublers.

Installing the Shunt and wires, ANL and 60amp fuse.

My tiny #8 wire instead of copper bus bar.

Blue wire is the battery master switch, the red wire the starter button.

Avionics Panel ANL and Shunt 4.5 Hours

Avionics Panel More wiring tweaks

RV14 Build April

Avionics Panel

Every time I think I'm done with the wiring i decide to make another change. I didn't like the way the CPC was connected so I changed one to a bulkhead fitting. The CPC has all the wires from the center of the panel switches. I think stein did it this way to make panel removal easier?

I installed it in below the radio stack. Drilling in the tich spot wasn't easy so it didn't end up pretty but it works.

New pins installed

New Connector.

Next I knew I was going to need more room to install futur things like seat heaters so I decided to add a 10 circuit breaker panel. I added nutplates to the access panel the covers the center tunnel under the avionics sub panel.

Testing the location and fit

Final install. The power wire goes to the main bus so there is power anytime the battery master is on.

I didn't like the way that the cheap DB9 looked and I wanted to splice the RMP wires in to not have to run 2 more RPM wires to the Pmags so I repinned the DB9s for the Pmags.

Old cheapos

New Wiring plan.

RPM solder spliced in and the 2 shielded cables are spliced and grounded at the GEA24

New Pins on

2 very nice looking connectors. 

Avionics Wiring 5.0 hours

Monday, March 8, 2021

QB Wing Corrosion/ Primer issue

RV14 Build March

QB Wing Re-Work

Vans has informed me that my wings are part of a batch that didn't get the correct application of primer and are subject to corrosion. Well that sucks! That had me test the wings by wiping a dry rag to see if primer transferred.


It would seem just everywhere I tested.

Then I did a thorough inspection for actual corrosion. While I didn't find a bunch, I did find some.


Not sure what the green dots are, I think the primer, but there looks like some salting could also be from overspray of acetone. 


Finger prints from sweat.

While Im waiting on Vans to answer some questions I decided to get into the wings are clean up everything I could find. Even if it was questionable. Acetone, scotch brite, SEM self etching primer and I did use AKZO where the application was easier with the smaller airbrush.




Cleaned out every possible spot I found we will see what fans says and how this plays out.

QB Wing Corrosion/Primer 6.5 Hours


Before Start and First flight testing

 R14 Build August & September 21 Testing Getting into the fun stuf!! Putting gas in for the first time. Have the airplane up to get 15 d...