FWF wiring routing and Pmags

 RV14 Build May 21

Emag wiring and FWF

Figuring out how to route the ignition harnesses so they weren't bundles and had a good length.Next several photos just showes how I did it. I purchased some ignition harness wire separators, then ended up being a little large so 1 wrap of rescue tape on the harness clamped everything well.

You have to use a step drill to enlarge the hole of the cushion clamps. These are #7s. I need #8 for 1 since the alternate are cable will pass through it as well.

The harness are a fatter than standard magnetos, so the baffle pass through dont work as they are. TBD on how to fix that.

More routing.

Finally cutting and wiring in the Pmags.

Fairly straight forward. I did end up tinning the leads to help them not frey when installed.

I removed this cushion clamp to get the wires through, not necessary the wires will slide through so save yourself the trouble here.

Before I installed the second pmag I fogged the motor as best I could with ACF50.

Wiring up the second PMAG.

Running the ignition cables on this side.

After re reading the PMAG plans I realized my ground wire was too small so Im replacing this with 14awg.

Connecting the PMAG manifold pressure.

Installing CHT 2 and the fuel flow transducer and connecting to the wirring.

FWF Wire routing 14.0

Avionics Panel- Radio stack, Final Panel Install and Power up

RV14 Build February

Avionics Panel

This section takes a LONG time since there isn't plans you have to figure it out and execute all on your own.

Time for the radio stack. I slid everything into place to see how it would sit and with having the GNX375 on the bottom the rear end was help up by the subpanel and made the front tip. You can barely see behind the faceplate of the GNX near the top edge but not the bottom.

If I lift up the front of the unit the gap goes away. I know this is next to nothing but I want it to be flush!

So I take a few measurements and start removing material.

At first I tried to do it with sand paper but it was painfully slow. so break out the dremel and get it close. Finish with the sandpaper.

Almost there.

Ahh. Nice and fluhs. Time to mount the avionics racks.

For a second I thought about nutplates, but using #6 nylock nuts was way simpler.

Lucky for me my panel is all one piece and I didn't need a nuplate here to attach the center because it would have interfered with the rack mounting nuts.

All installed!

Close up of the panel after the V speeds were fixed.

Time for the final panel install and hook up. 

All the switches are back in and hooked up.

Screen and the radios are in

MFD hidden plate and iPad mount is in.

Just need to finish the antenna cables. Stein has a nice youtube video on how to do this.

Cut back the plastic

Remove the shielding then cut the plastic back to the next line.

Cut/Removed the center insulator

Install the pin and crimp. Test with a voltmeter.

Install the collar and the end and crimp.

 

Now that the antennas cables are done, hook up the antennas before turning on power. Then Happy dance!

Avionics Panel 7.0 Man Hours

Avionics Panel- Harness Adjustment, install, and re-work

RV14 Build February

Avionics Panel

This section takes a LONG time since there isn't plans you have to figure it out and execute all on your own. After getting all the subpanel in I laid in the wiring harness to look how it fit. Then I decided I didn't like it so I went to work on moving wires.

First I moved all the power wires so the exited the main bundle closer to the middle, I actually made it to close to the middle and had to deal with a slight prop cable interference later on. But moving wires meant some got longer some got shorter, so now I had to re-terminate all of them to be even.

I might not have done this had I known how much work it was going to be, but not like I have the FWF kit to work on.

I decided to run the wires up the middle, there were down the edge near the bus bar interconnect, but I already notices some chafing.

During the first test fit I noticed the main power mounting point contacted the airframe, obviously this isn't good.

So I tried to bend the bus bar to clear it, but its just too close for comfort.

I decided to flip the top busbar and make another interconnect.

Finished to the new part, just need a longer screw now and all set to go.

After I moved the power wires I moved all the grounds to exit the harness in front of where the main ground bus will be. Sorry no picture of that. Then I decided I was going to mount the main harness on a rail behind the subpanel with cushion claps. I just needed to make the rail and mount it. Mostly I eyeballed where it was going to go and then drilled the mounts. Then I eyeballed where I thought I wanted claps and removed the bar and drilled and installed nut plates.

I installed the harness on the rail first and then slid everything into place. The rail gets mounted on either side with AN3 bolts.

Installing the rail mounting brackets.

rail installed with the mounting brackets.

Routing all the wires through the cushion clamps and seeing what Im working with for lengths.

Since the grounding block needed to be mounted on the firewire I decided to do all the firewall stuff at once. Starting with a doubler for the avionics relay and main power in bus.

Then I made a doubler for the ANL and shunt. I didn't install this yet because I want to wait till I have the relays so I know the location is good.

About where it will go on the firewall.

I'll use nutplates to mount the units.

Then I located and drilled the mounting holes for the grounding block.  I put this close to the battery so I can easily connect it to the negative for a very low resistance ground.

Grounding block on the inside of the firewall.

Now I laid out the rest of the harness to check final fit and started to terminate wires. Beginning with the grounds.

Trimming, terminating, heat shrinking.

lots of work but worth it.

Next I decided to really make some work for myself. I didn't like how long the common fuselage harness was so i cut and repinned all 4 of the connectors.

I bought new connectors so as I cut a wire I could re-pin it and use the old as a template on what hole it went into. Worked really well.

This was before I figured out to use the old connector as a template. I was repinning and then using the heat shrink labels and the plans to re install the pins.

So much work but the finished product I think looks great and there isn't a bundle of wire for no reason behind the tunnel now.

Another view with the CB panel out of the way.

When I was redoing the power wires I accidentally pulled the power wire for the IBBS through the harness tight. Well I hate how it looks so I cut and trimmed all the wires in the connector.

The IBBS after trimming. The CPC connector goes to the light switches in the middle of the panel. I have it moched in for now. I need to replace the end with a flange panel mount the will screw into the panel.

Cleaning up the wires for the MFD and the usb charger. I just used adhesive backed flush mount zip tie mounts for this.

Avionics Panel 43.0 Hours