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Cozy Mk IV or AeroCanard?

Posted By:
Matthew Hanneken
Homebuilder or Craftsman
#1 Posted: 9/27/2010 09:28:08

Wondering what the real differences between the two are?

How feasible, if at all, is it to attach a higher powered Lycoming to their airframe to reach 250 KIAS?

Do many folks install environmental controls in their aircraft--purely air conditioning and heat?  Wondering how difficult that would be?

Reading the specs on these aircraft cruise ceilings of 20,000+, how do folks handle the physiological issues wich a lack of pressurization?  (In my pilot training, we've always been taught if you don't have pressurization to try and get below FL180 asap).  Or are their aircraft pressurized and if so, is that a fairly easy task to accomplish?  I have a firm grasp and clear understanding of hypoxia and its effects on the body, but not that of just high altitude I guess.

Lastly, I'm in the Fort Walton Beach/Destin, Florida area-- wondering if any folks have a Cozy Mk IV or AeroCanard I could see or take a ride in to make a more educated decision?  Perhaps this could be a good excuse to take the wife or fam on a vacation to the Emerald Coast and visit our white sand beaches.

Any comments, advice, or help on any or all of the above questions would be appreciated.


Michael Amick
#2 Posted: 10/26/2010 12:57:09

The differences are one is plans built & the other a "Kit".  The Cozy designer, Nat Puffer, had an agreement with Aerocad principal, Jeff Russell, that Aerocad could produce Cozy IV parts.  Russell changed some design details such as glass cloth specs & that ended the approval relationship.  The Aerocad made several changes to the fuselage & canopy but is essentially a Kit built, modified Cozy Mark IV.

 250 Kts. would be beyond the Vne of the current design limitations. There are 540 powered Cozy IV's that were streached 12" to accommodate the W&B issues.  Most recently Scott Carter reported 205Kts cruise in his 540 powered Xtra EZ (see http://www.eaa.org/experimenter/articles/2010-08_extra_ez.asp)

No pressurization needed! Well, O2 vs. the altitude is not the issue here, as unpressurized Military Aircraft have service ceilings often up to 42,000 (P 51 & A4). In the similar designed ,Long EZ, pilot, Jim Price, in 1996 set an altitude record of 35,027 feet that still stands.  (Biggest problem was COLD! He had ice on the inside of the canopy.) So unless you equip it with a Jet Engine (There is at least one so far!) pressurization is not a concern in this type.  If you wanted to redesign it for pressurization purely for comfort reasons, the weight penalty would be considerable.

Contact Terry Schubert (jschubert@juno.com) Editor of the CSA, Central States Canard Association, newsletter for member/owners in your area.

Michael A

Michael Amick VE Project @ KMBT Middle TN