Showing posts with label Wiring. Show all posts
Showing posts with label Wiring. Show all posts

Thursday, September 16, 2021

Avionics LRU Installs and Programming

 RV14 Build August 21

Now that the wings are on time to install the Pitot

luckily I was smart enough to run the wires and tube long enough so everything pulls through the pitot mast.

Running the wire for the OAT.

Pinning the OAT

All set!

Screws have a little lock tight on them and the pito tube is installed! Making progress feels so good!

Securing the service loops.

I installed the Pitot tube inboard of the tie down so I didn't have to worry about it interfering with the tie down ropes. But this cause a new issue to make sure I wasn't interfering with the push rods. Little bending of the pitot and AOA tubes and the routing worked great.

Installed my hidden starter switch power.

Right now just with velcro until im sure I want it here.

The pilot stick has having a loose wiring issue so i cut and repinned the harness.

Pins installed.

Programming the G3X indications.



Oil pressure



LRU Install and avionics Program 20.0 Man Hours


Section 53 ELT

 RV14 Build August 21

Purchased the ELT kit from Vans. Registered it with NOAA.

The install was relatively straight forward. Instead of riveting the beeper to the VS I attached it to the top of the ELT with hook and loop velcro and a zip tie for good measure. The cable was about 12" short to reach the location in the panel I had planned so moving the beeper here allowed for a shorter wire run.


Installing the tester in the panel.

There isn't much material on the faceplate but I did countersink it just because I liked the way it looks. Hopefully it doesn't crack in time.

ELT 3.0 Man Hours



Wednesday, September 1, 2021

FWF Routing Engine Sensors & Pmag timing

RV14 Build May & June 21

Getting the CHT wired in, had to test it lol!

All the CHT are in. I used my heat gun to test that they are wired to the correct cylinder. All good!

We have manifold pressure! 

Another 14 was having trouble with fluctuating manifold pressure readings and I read that Garmin recommends using a PS-8G so i went ahead and installed one right at the base of the sensor

After the restrictor I install the elbow and pressure line.

The Oil pressure and Fuel pressure sensors are installed. Just have to trim the zip ties once I commit to this final placement.

View from below of the same sensors.

Routing the CHT wires and securing them

Secuting the #1 CHT and EGT wires.

Keeping the rear EGT wires long enough to reach the front cylinders to help with future troubleshooting.

The EGT holes are already drilled you just have to open them up a little more. The plans have you use a #30 i think, but it wasn't enough to I let the bit wobble in the hole a little to make it slightly bigger. This gave me a nice tight fit for the EGT sensor. The sensor cables are looped to prevent fluids from wicking up the line.

View of the EGT sensor sitting flush on the exhaust.

Right side all wired and routed.

Left side all wired and routed.

Ive never used one, but I started to worry about needing an alternate static source so Im going to install this valve.

The valve really wants to spring open to I purchased a red flip up guard to help keep it closed

The switch is mounted behind the G3X screen on the subpanel.

Man buss with wire protectors.

The automotive wire harnesses are fatter than standard lycoming. I used a reamer to open up the mounting baffle pass throughs.

Tight and snug fit now.

Programming the PMAGS using the EICAD program. For a IO-390 you need to find version 4 to set the timing but use version 3 to read it and make sure it took. There is a glitch in the system for 4 when you use a negative value for advance shift it will display it as 12.6.

My initial settings are to fire at 20BTDC all the time with no advance to help with CHT temps and diagnosis if there is a problem I know its not advanced timing causing it. You can see on this version 4 the advance shift is displayed at 12.6 even though I put it in at -7.

Using the back to the spinner ring gear to set TDC

Line it up with the case.

FWF Avionic wiring 10.0 Hours
Pmag timing 3.0 Hours


Reiff heater Install

 RV14 Build June 21

FWF Wiring Reiff

I wanted to install the full REIFF XP heater kit, but on the IO-390C sump there isn't a flat place to install a sump heater. I decided to keep the cylinder bands though. They are very easy to install. Just slide around the base of the cylinder and go together like a hose clamp.

After they are clamped I used safety wire to prevent the screw from backing off and loosening the clamps.

Close up view of the safety wire.

Securing the wires with zip ties per the REIFF plans.

Safety wire and potting the entry hole with RTV. The green wire is a case ground. I did have to trim the baffle on the #2 cylinder so it would sit flat and not dig into the heater band.


Reiff 1 Hour


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...