Cowling Test Fit

Cowling Test Fittings during “The Grand Mock-Up” & Beyond

22 June 2013 — Today I pulled out all the stops . . . or should I say I pulled out all the pieces of the build so far.  Before I am separated from my project while I spend a year in the Middle East for Uncle Sam, I wanted to get an idea of what this thing looks like put all together.

So I pulled the fuselage out into the front yard, and kept it covered while I collected the other components.  Next up was the Centersection Spar which I placed into the fuselage for the first time since I completed it about 8 months ago.

After I got the CS spar & firewall in place, I added both of the wings next.  Also, as you can see I had to throw on at least one winglet just to get an idea of how it would look.  Although it was a little awkward to get it on the end of the wing so it looked half-way normal, I think I got in the ballpark.  Well, and of course we can’t forget the canard… yes, it’s on there too!

Once I got the wings on, it was now time to fill in what gaps I could to make it look at least a little like it had some mass to it. Next came the engine cowlings.

Chap 19/23 - Wings & Cowling trial fittingChap 19/23 - Wing/spar & Cowling fit

Chap 19/23 - Wing/spar & Cowling fit

Long-EZ Project Mock-up

Chap 10/19/23 - Canard-Wing/spar-CowlingChap 10/19/23 - Canard-Wing/spar-Cowling

Chap 19/23 - Wing/spar & Cowling fitChap 10/19/23 - Canard-Wing/spar-Cowling

In the next couple of shots you can see how the lower cowling hangs down 4 inches below the stock/plans firewall.  Again, since Mike Melvill had built a NACA inlet for his engine air intake the back end of his fuselage–and subsequently the firewall–was 4 inches lower than plans [in essence making the bottom line of the fuselage continue straight until aft of the firewall].

Chap 23 - Cowling Trial FittingChap 23 - Cowling Trial Fitting

And then the following pics are more close-up shots of the upper cowling.

Chap 23 - Cowling Trial FittingChap 23 - Cowling Trial FittingChap 19/23 - Wing/spar & Cowling fit


21 September 2016 —  Tonight I finally got that lower cowling mounted so that I could mark up the firewall for trim.

Mocking up lower cowling with wings & FW

I had to lean way over into the cowling in order to mark the lower line without disturbing the taped-in-place cowling.

Marking firewall for trimming

I took this shot just to get an idea of what the bottom profile of the plane will look like.

Rear profile with cowling in place

Another thing that I did that is not shown in these pics is I ran a line from one wing TE corner to the other.  This let me measure from the back face of the spar to the string to determine the sweep.  I determined that I’m only 0.1″ short at the BL23 mark at the very inboard wing, and 0.4″ short on my wings’ sweep over the entire wing span: BL175.6 vs the plans BL 176.  Again, not bad and I’ll take it!


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Project Update

Hey Guys,

Well, the weather is slowly warming up (above freezing anyway)… and here soon I should be back in the shop to work out the finer details of making everything fit inside the cockpit, and then get onto much bigger build tasks.  I still see a very real light at the end of the tunnel for all my in-cockpit install shenanigans, and expect to be done with those in about a 2-week total time span once I get started on them again. 

I’m still working on the electrical system taskers and chipping away at them all while making decent progress.  

The past few days –after finishing the major engine build & bringing it home– I have been finally able to do some research with engine in hand to discover the more esoteric (read: “oft forgotten”) bits ‘n pieces that may not be obvious requirements when simply planning/purchasing major components for the engine build. One example of many are the nuts and bolt required to mount the starter… which are not included with the starter, nor the engine.  So, with the weather still cold (dipping into the 30’s at night), I carved out 2-3 days to figure out what engine stuff is required, which version to buy, and where to purchase it from.

Still, seriously … having finished the vast majority of the Electrical System; Instrument panel design, install & wiring; and now the Engine, I can say with very high confidence that the big build stuff is coming up  SOON (including the wheel pants…) AFTER the weather warms up a bit.



  1. Chapter 14 – Lower extrusions installed Leave a reply
  2. Chapter 14/23 – Baffling Extrusions Leave a reply
  3. Chapter 14 – Lower engine extrusions Leave a reply
  4. Chapter 14/22/23 – Engine mount prep Leave a reply
  5. Chapter 23 – Engine Preservation Leave a reply
  6. Chapter 3/22/23 – Work bench finished Leave a reply
  7. Chapter 22/23 – Engine Parts? Check! Leave a reply
  8. Chapter 22/23 – Engine Inspection Leave a reply
  9. Chapter 22/23 – Electrical Workbench Leave a reply