Wing Vortilons

Vortilon construction is detailed in the Roncz Canard plans since they are a mandatory addition to the wings if flying the Roncz Canard.  There was a well-known Cozy accident that resulted from a main wing stall due in large measure to the pilot/builder removing the Vortilons before a test flight.  Clearly these little guys are critical to safety of flight when incorporating a Roncz Canard into the configuration.

Now, as far as classification . . . although these are specified & mandated in the Roncz canard plans (canard = Chapter 10), they clearly go on the main wings (wings = Chapter 19).  So I’m adding them here as noteworthy item, albeit I’ll leave this page “chapter-less.”

18 October 2015 Since I had a little bit of pure epoxy left over from glassing the left canard swoosh tip, I grabbed the BID scrap box and a piece of plastic to make a 4-ply BID sheet, of which I would cut out a Vortilon or two.  I laid the 4 plies of BID into a pre-preg setup and poured all the epoxy into the layup.  After heating up the pre-preg with the heat gun it flowed well enough to wet out all the epoxy.  I then put another plate on top of it and weighed it down with my heavy tool bag (pic below).

Vortilon 4-BID layupWeighing down Vortilon 4-BID layup


19 October 2015 — Since I had used some leftover epoxy yesterday to make a set of Vortilons, today I wrote it into the work plan to finish the set for both wings.  Here’s the 4-ply BID layup for two more sets of Vortilons.

#2 vortilon layup 6"x 8" 4-ply BID

And here are the initial two that I cut from the glass I laid up yesterday.  These are the largest of the 3 sets of Vortilons.

BL 80.0 Vortilons cut



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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