Chapter 22 – Instrument Panel

Over the past few months I’ve been going round and round on my Instrument Panel layout. I’ve researched a myriad of instruments & avionics, built matrices to compare various components–from clocks to autopilots–and am slowly getting a picture of WHAT components are going on the panel, maybe just not exactly WHERE the components will go on the panel.  Of course, since I’ve been working on my electrical system, current draw, integration, weight and cost have all been factors in the panel plan as well.

Moreover, a  lot of the panel layout will be based on ergonomics, which of course requires me actually sitting in the cockpit making airplane noises before I decide on my final configuration.

Still, I thought I would post a few pics (out of MANY) of my proposed panel options.

Chapter 22 - Instrument Panel LayoutChapter 22 - Instrument Panel LayoutChapter 22 - Instrument Panel LayoutChapter 22 - Instrument Panel Layout

Again, my panel is currently an ever-changing storyboard.  For the most part, the avionics and instruments are what I’m planning to go with presently, but as time moves on & new technologies and/or opportunities (e.g. the TruTrak ADI) present themselves the panel design can of course easily be updated.

Finally, one point of note.  My panel cutout is about 0.7″ shorter in height than my real panel, so in reality I have a little bit more wiggle room to play with when stuffing various electrowhizzies onto the panel . . .  if it all fits on my mock up.

 

Chapter 22 – Backup Attitude Indicator

Just an update on the continuing project planning & component acquisition efforts.  I have been spending a lot of time both on my electrical system & subsequently on my instrument panel.  As I get more research under my belt, gain a bit more knowledge, and figure things out, I then of course ask my building buddies what their plans are for whatever I’m currently carrying on about.

In one of the latter iterations of my planned instrument panel, my buddy Marco noted the myriad of redundant capabilities I had for simply displaying airspeed and altitude.  Of course I want SOME redundancy in my systems for backup purposes, but having 4-5 different ways to measure airspeed may be a bit overkill!  I hadn’t intentionally planned on having this many, just so many of the newer avionics these days have built in extras that may add more than we need if we go back and assess our actual requirements.

One of my primary culprits in this area was the TruTrak Gemini PFD.  It’s a great piece of technology and really has a lot packed into a nice, small package.  But when I went back and re-assessed my requirements, I had included it on my panel for one primary reason: as a backup attitude indicator.  I had accepted the fact that it provides airspeed and altitude information simply as a bonus.  But at what cost?  Cost here meaning actual money, since at 5.4 ounces it wasn’t necessarily breaking any feasible weight allowance thresholds.

So, in the vein of saving money and sticking to a prioritized plan to get this project in the air soonest, I decided to forgo the extra ASI & ALT features built into the Gemini PFD and focus on the primary capability I needed here, again, simply a solid backup attitude indicator.  In my ensuing research I found a TruTrak ADI for sale on Ebay for way below half the cost of a new Germini PFD (and well below the new touchscreen 3-1/8″ TruTrak ADI as well).  After a number of emails back and forth with the seller–who had just pulled it out of an RV-8 during a panel upgrade–I decided to pull the trigger.

Now, I will suffer about an 8 ounce weight penalty vs using the Gemini PFD/ADI, but for now I’ll simply put the Gemini PFD/ADI (or whatever future equivalent) in the “planned upgrades” category, to be purchased down the road after my bird is flying.  Swapping TruTrak for TruTrak will be a fairly easy upgrade both physically & electrically, but will of course require a new weight and balance . . . but most likely I’ll have a few more upgrades & modifications in the mix around that same timeframe, so I’m sure a new W&B will be in order regardless.

Thus, introducing the latest addition to the instrument panel:

Chap 22 - Trutrak ADI

TruTrak ADI (3-1/8″) Features:
– Gyro / VS pitch display
– Bank Angle display
– Built-in Ground Track DG (via built-in GPS)
– High Bank Angle Warning
– Low Airspeed Warning
– Slip/Skid ball

 

Chapter 21 – Featherlite Strake Leading Edge Kit

Well, as I was trying to nail down some particulars & plan out how I was going to build my strakes, I went to Nate Mullins’ wonderful Long-EZ build site.  Now, before I get too far into this, you have to know that my catch snarky phrase of late–well, over the last couple of weeks–has simply been: “Sometimes it’s better to be lucky than good.”  Ok, I was going through Nate’s strake-building adventures chronicled on his MyKitLog build site, when ironically, or maybe I should say coincidentally . . . oh, what the hey, we’ll call it serendipitously, I ran across the part where he stated that when he acquired his Long-EZ project, that it came with both the Aerocad/Aerocanard strake kit, and the Featherlite Strake Leading Edge Kit.  Thus, he had to make a choice between the kits when he built his strakes, so he went with the Aerocad kit.

Now, I have bugged Mike & Larry at Feather Lite every few months, since I started building my Long-EZ in April 2011, to see if they had started making the Foam Strake Leading Edge Kits.  I’ve talked to a fair number of builders, the Old Guard, etc. to know that the strake’s leading edge can really detract from a canard/ez’s look if not done well.  I really liked the idea of capping the entire leading edge vs. building the plans method, joining the strake tops & bottoms to LE as far back & away from the leading edge as practical (in the straight, not curved, area), and having a wet leading to add to the fuel amount in the strake. Unfortunately, in late 2012 Mike & Larry had had enough.  Apparently they felt I was by then a mature enough builder that they could break the bad news to me: they had no plans of ever making the strake leading edges again (they can’t because the foam manufacturer changed the actual chemical properties of the foam… and now it can’t contour properly to the forms).

So, when I read Nate’s strake building account, I asked myself in disbelief, “Could it be?!” Well, a quick email to Nate asking if he still had the Featherlite Strake Leading Edges and would he be willing to sell them to me, fortunately came back with a resounding yes! Eureka! (Well, actually Featherlite! But hey, they’re all good guys!)

A little bit of coordination later, and a ensuing rendezvous between Nate and my ‘ol northern Virginia neighbor Richard (who now lives in Kentucky an hour or so from Nate in Tennessee) and I was the new proud owner of a “new” set of Featherlite Strake leading edges. I would say I’m the happiest guy in the world, but I think that would actually be Larry Lombard from Featherlite ‘cuz that crazy yahoo will stop calling & bugging him about those damn strake leading edges.  In addition, I’ve been able to banter about a bunch of different build ideas with my new Long-EZ buildin’ buddy Nate!

And here they are:

Chap 21 - Featherlite Strake LE KitSince Richard still visits the northern Virginia area often, he’ll be bringing up the kit in May. BTW, I was teasing Richard that there must be some cosmic connection between him and Featherlite, because he was the one who drove me to the cargo terminal in his truck to pick up my crates of Featherlite foam cores to ship them off to Germany.

 

Chapter 22 – ADS-B Receiver

In looking back over my notes I failed to post this in the correct order.

So the plan right now is to definitely have full ADS-B by using the Trig S-mode Transponder and a capable ADS-B receiver to provide that capability.  I have to say that one thing I really like from the GRT folks is they tend to play nice with others, this means options.  On GRT’s page where they discuss the various ADS-B receivers that will integrate nicely with their EFIS systems, they provide some pretty good info.  Of course, I original set my sights on the Navworx ADS-600B, but after looking at & assessing my actual bottom line requirements I decided that if I am going to have enough funds available to get this bird in the air within the next 10 years, I better forego the almost $2600 receiver and get a little more pragmatic (my primary goals were to have an ADS-B receiver that would integrate with my Trig S-mode transponder, display weather & traffic data on both my EFIS display and iPad, and meet the FAA’s 2020 ADS-B requirements).

Enter Radenna’s SkyRadar ADS-B Receiver.  Although at first glance the SkyRadar seemed to be nothing more than a portable receiver, as I looked at it more and more it seemed to be a very capable receiver.  And, as with the many components I’m looking at or have bought, a number of the RV drivers give the SkyRadar enthusiastic thumbs ups. So, the SkyRadar went on the list as the most likely candidate that I would purchase in the future for my ADS-B receiver.

Chapter 22 - Skyradar-DX ADS-B Receiver

You may be asking, “What happened?”  Well, if the recent past tells you anything, then you’ll know that I’m cheap… and in being cheap I refer back to my oft cited mantra that sometimes you’ve got to spend money to save money!  Ok, the bottom line is I went to Radenna’s website to confirm some info on the SkyRadar-D, when lo & behold they had just come out with the SkyRadar-DX . . . which includes a built-in AHRS!  Moreover, they [are having] a sale where the first 50 buyers get $200 off the price that the SkyRadar-D normally sells for (the offer appears to still be going on!).  So, after a few hours of conformational research to ensure this was in fact the ADS-B receiver I wanted, I pulled the trigger.

So here’s the info on this device:

SkyRadar-DX Dual Band Receiver with Built-In AHRS

Key features:

  • SkyRadar-DX’s operating frequencies are 978MHz and 1090MHz and the latter conforms to DO-260 standard.
  • 5Hz GPS receiver
  • Artificial Horizon Information
  • Output data over Wi-Fi network (multiple displays can be connected)
  • Operates as Wi-Fi Access Point
  • USB high speed serial port output
  • Input voltage 11-36 volts
  • Power consumption less than 5 watts

The SkyRadar Receiver contains the following major components:

  • UAT receiver tuned to receive and process ADS-B data
  • High accuracy GPS module
  • WiFi module transmitting data to iPad, iPhone or iPod Touch