Re: Charlie's Dragonfly Repairs

One Sky Dog


The canard belly fairing is added after the canard layup per plan. It was to provide a channel for cooling air exit and fuse matchup. You could probably clean it off.

VG’s YES!!!
I tried everything to avoid them but needed with GU. I have not put them on the new canard yet. I do not want to damage them while I am still throwing things around.


On Jan 5, 2021, at 2:14 PM, smeshno1@... wrote:

Understood. The additions on the bottom of the Canard are one item I was wondering about with my own Canard. I also have the same MKII gear stubs and the non-anhedral planform and could not see any usefulness for the additions on the lower Canard surface until now. Your photo clarifies; with the original VW rather than O-200/Corvair the plans designed D'fly narrow firewall would not make the grade. In the photo view it is clear why the aerodynamics would be better with a "no taper" to the L.E. of the Canard. My fuselage is all Q, therefore a conventional Q-200 cowl will be acceptable for fitup. I will calculate the cooling area with the flat 6 but I doubt any problems would arise compared to the flat 4 being used.  William is very clear on the cooling area size required. The actual flight testing has proven it as well. 

 I will be cutting the span of both the Canard and Wing to "Q" config..18 feet and filling in the MKII stub holes due to my revision to use Wittman Buttercup gear design (I own a numbered plans set from Ed Luce for the Buttercup), and possibly removing the two fairings on the lower Canard surface. I am unsure how those fairings were applied.. peel ply and layup and then bonded or if they were made as 
part of the Canard layup. If done as part of the layup then the sleeping dog will stay asleep and the fairings will stay put. 

 Do we need vortex generators with the D-fly airfoils? I do not see them on your aircraft in the photo. 


From: <> on behalf of One Sky Dog via <Oneskydog@...>
Sent: Tuesday, January 5, 2021 2:35 PM
To: <>
Subject: Re: [Q-List] Charlie's Dragonfly Repairs
My Dragonfly in 1995 with 1835 cc (UN)HAPI engine the side now follows approximately where the cheeks were.


On Jan 5, 2021, at 1:03 PM, One Sky Dog via <Oneskydog@...> wrote:

I did not actually widen the firewall. The Corvair is wider than a VW. On the stock Dragonfly the fuse is 3” wider than at the front of the canard. An aero guy told me that makes the air over the canard move sideways and not a good thing. I glued a wedge of foam to the existing glass and shaped it t morph to the canard.


On Jan 5, 2021, at 11:50 AM, smeshno1@... wrote:

 You widened the firewall for extra room within the cabin or due to requirements for the engine mount? 

From: <> on behalf of One Sky Dog via <Oneskydog@...>
Sent: Tuesday, January 5, 2021 3:17 AM
To: <>
Subject: Re: [Q-List] Charlie's Dragonfly Repairs
I used the WW nose bowl As a start. Widened the fuselage at the firewall and morphed the two shapes together.

On Jan 4, 2021, at 4:03 PM, smeshno1@... wrote:

 Charlie.. did you base your cowling using the WW 750 nosebowl or did you fab up this unit?   

From: <> on behalf of Jay Scheevel <jay@...>
Sent: Monday, January 4, 2021 3:44 PM
To: <>
Subject: [Q-List] Charlie's Dragonfly Repairs

Looks like you are getting there, Charlie. It would be great to have both you and Bob show up in two Dragonflies. Bruce would do a little dance he would be so happy! Let me know when you get back up to Ogden again for a spell and I will see if I can make a flight over there in my Q. BTW, I changed the name of the thread to keep up with the conversation.





From: <> On Behalf Of One Sky Dog via
Sent: Monday, January 04, 2021 1:32 PM
Subject: Re: [Q-List] Cutting control cable




Here are a few.




After a bad day of flying!



Replacement canard and gear and engine on its feet.

Reworked cowl to make space for MS carb. To replace vapor locking TBI carb.


So I still have a problem with right side elevator torque tube alignment with the elevator. I have to drop the canard and cut out the bearing blocks and redo them. Wiring changes, finish rebuilding elevator fairings, engine control hookups and a bunch of other little things. Then start the test flights again. Oh! wheel pants Need to be completed. 


I will have to bring my 20 ft barriers to put around it as it ain’t no Lindy nearing 900 hours and 30+ years, 4 engines, 3 canards, 2 owners.

I can only work on it after the snow melts and the temperatures in Ogden are habitable for camping. I hope next summer will be successful and I can show up in a proper airplane at the FOD.



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