CP Tomes

sold yet?

Back to the original thread, spar cap trough dimensions for Roncz canard on a Long-Ez.

Why not just use the Cozy dimensions and make a note that the layup schedule is per Cozy plans, making a slightly heavier canard that's slightly stronger? Tell builders to take a big crap before they fly and it will balance out the weight difference.

Or, figure out the reduction in spar cap thickness per the layup schedule differences between the two planes and re-dimension the trough shallower from the Cozy dimensions.

hello LongEZ-Dave,

 

thank you for joing us!

 

 

 

 

we are only interested in the spar cap dimensions: we know the roncz lay-up schedule as it is in the terf cd, the only missing data is the spar trough size:

until now nobody was able to clarify this point.

I can't believe nobody out there has a copy or a scan of the roncz canard templates: ok you cutted them from plans when you built your canard, but may be someone still have the wood or metal shapes used to hot wire the foam cores: I think we could scan them......

is there anybody available to share his templates?I promise he'll get 'em back!!

regards

nico

One thing preventing a direct answer to this might be the fact that the current owner of the intellectual property we're talking about (Aircraft Spruce and Supply owns the rights to the Cozy Development Corp materials) has people sign a license agreement when they buy the plans. So plans owners might be a little hesitant to make copies and distribute the materials.

Here's the license agreement.

http://www.aircraftspruce.com/catalog/pdf/cozylicense.pdf

If you are interested in making parts available to plans owners you could talk directly with Aircraft Spruce and figure something out. Just a suggestion...

I plan on building the fuselage to specs, but with the changes inside the cockpit. I don't like the idea of widening the fuselage even though it has been done. The problems with this change that I foresee is a movement of the flight controls to accommodate a center of the cockpit pilot position. Again not seeing the plans I don't know the routing of the in cockpit systems.

 

Also to address some issues of rear passenger view I think a slight redesign of the canopy and the addition of strake windows would greatly improve all around visibility.

 

I like the Cozy because of its size and load in comparison to the Long Ez. I just believe that the added comfort and possible storage capacity would make for a great 2 person weekend trip machine. Imagine the extra bells and whistles a pilot could have instead of lugging around two extra passengers lol.

Build it to sit off center (left or right, your preference) to put your hand on the stick in the plans location? Essentially, widen one seat and eliminate the other side. Are you assuming you have to sit on the centerline?

I would be asking questions about the structural effects of moving the heat duct etc off center.

Canard Zone has been very helpful for my surfboard building project using Rutan type materials and methods, finally the board is all laminated, ready for finish. Regular surfboard finish is built up resin gloss coats sanded and polished to beauty. We want to use a paint type finish to insure as close to waterPROOF as possible, beauty is secondary. All the resins soak a certain small amount of moisture and I'd think the aviation designers would address this and the players on this forum would know something about what they're thinking about composite resins water absorption and coatings to minimise it. Any thoughts please? Thank you, John C. San Diego

Maybe paint?

What day will this be?

I'm there Mon-Thu with my SO, Thu-Sun with my parents and daughter. I'll be staying offsite at a hotel every night.

My focus in 05 was SS1. This year it's Cozy MKIV.

I'm going to try a real heavy mesh biaxial fiberglass on the top. Both sides so the plane doesn't list while flying.

You forgot the smiley there... I can't see a few ounces difference on one strake causing a list on a ~1000lb airframe.

Very impressive.

Thanks for the reply!

 

...

Ever anyone tried a full flying canard?

 

...

 

 

Orville and Wilbur Wright?

Sorry, couldn't resist.

The reason for using the ball is that it can act as a gimbal .Actually only half of the ball is used.,but it's that half that is used that acts as the "duct" .In using this shape I get more space which means I get to use a bigger prop which translates into more thrust.By connecting to it's other half and by making that other half moveable I eliminate weight by not having to use extra hardware for a gimbal set up.If I use ducted fans I have to put it on a gimbal and the props are so small there"s not enough thrust.Helium doe'snt really provide much lift unless you have a large bladder,but I found out that even an air filled bladder is ok too.I'm creating an airfoil that uses this pressure to make it rigid over 95% of its area the rest is rudder,elevon and hardware.The entire idea got started by trying to find a way to hover longer to take photos of the rain forest.Usually a hot air balloon does this job,but I like the idea of being able to get out of there quicker when it starts to rain.

If I'm reading this right, you're going to run the motor 100% of the time to pressurize the bladder?

Going to run out of battery, fast, that way.

I was within touching distance of this beautiful airplane. This is my father (hat with many pins and camera around his neck) talking to the owner/pilot about the Collins Pro Line avionics he helped build (he was a test equipment manager at Collins before he retired).

It's heartbreaking to think of the fate of the rest of the fleet.

CP; Thanks for the response!! If the Cozy uses the same wing and canard rigging how does the Cozy attain its Useful load which is higher than the Long?

Might also be conservative numbers for the Long-Ez?

(waiting for Marc to check in on this forum and correct me...)

iirc from reading through threads, the Cozy uses the same wings (airfoil and planform but have spars?) , canard, and geometry as a Long. I do not know about Long-EZ, but there was an update to the canard incidence jig for the Cozy, and the canard is shorter than the original Cozy plans, so it may be shorter than a Long-Ez canard.

I'm in pre-build reading through the plans stage of my Cozy. I have no experience with Long-Ez.

Maybe I missed it, but where are you located?

Yes, Marc did a GREAT job at many levels:

 

1) Keeping calm, identifying options

2) Landing safely

3) Documenting it

4) Recognizing and accepting himself as responsible for the cause

WE ARE ALL WONDERING WHY THIS HAPPENENED AND HOW WE CAN AVOID THIS SERIOUS PROBLEM. WILL WE BE HEARING MORE DETAILS IN THE FUTURE TO HELP US??

http://www.cozybuilders.org/Desert_Center/index.html

Short version: Torque propellor bolts on the manufacturer's recommended schedule.

I'm looking for small-scale flying models of the Cozy (or VariEze). Possibly r/c. I looked at the threads in this forum, but only found 1/4 scale models listed.

I'm not yet set up for the full-scale build. I need to put up a new garage first. I've been planning it for about a year (the garage) and the design fits well with the concept of building a plane. I may have it built by end of next year. In the meantime I'd like to have a small-scale one to play with.

Anyone have plans/sources?

Also, I have a 2 1/2 year old daughter who loves to throw paper airplanes. Anyone have a paper/foam/balsa free-flight glider/rubber powered design for a canard lying around?

Thanks!

CP Tomes