Vortilons

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

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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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Recent Posts

Project Update

Hi Folks,

I’ll be heading out to RR23 in a few hours in the back seat of Marco’s beautiful Long-EZ, JT (I will say most likely for the last time!).  Since I’ll be gone for the good part of a week I just wanted to provide an updated update before I head out to fun & frivolity with my fellow Canardians!

I’m happy to report that the major recontouring, reshaping and significant re-glassing (in CF) of the bottom cowling is complete!  I still have the very aft center lip (at the top of the bottom cowl fin) to glass as well as the interfacing left & right sides between top & bottom cowlings.  Once these tasks are completed then the optimized install of the exhaust pipes will begin.

As I’ve stated before, I currently have a plan with my local race car exhaust-making dude, James, to finalize the exhaust pipes’ install configuration.  And I very much intend to optimize the exhaust pipe runs as they should be, in line with Mike Melvill’s exhaust pipe mods that brought the pipes inboard a bit closer to the spinner and focused on the very inboard section of the prop.  He notes all this in CP 83 and the operational improvements of these mods are impressive.  Since I have no choice but to rewicker the exhaust pipes anyway, I might as well make them as near-perfect as possible.

I’m still intent to focus solely on the plane for the next however long it takes to finish this bird… ASAP!  

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  4. Chapter 23 – Bottom cowl phase II Leave a reply
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