Cozy Mark IV Foam Pusher-Prop Plane Build

[AstroBoy]

Trial fit of unsanded balsa canards to make sure the CF spar tube sits in equally on both sides.

[Mathieu]

Thats very, very nice. Wow.

[AstroBoy]

Having seen the real Cozy's swept canard tips, i decided to sand it down to make it look as scale as possible, and i'm sure these real swept tips are helping in the stall characteristics of this particular plane

[AstroBoy]

Thanks Mathieu, still up surfing the net-eh?!
Did up one side, here's how it looked as compared to unsanded on the left.

[AstroBoy]

another view of swept tip

[AstroBoy]

trial fit of sanded canards, satisfied-lah quite close to scale lah

[AstroBoy]

canard's swept tips view from the rear...

[AstroBoy]

completed with canards, will be cutting the wings tomorrow night

[D.Yeo]

that is gorgeous truly gorgeous !

would look fantastic in the air no doubt

and that nose cone is so well done

careful with the CG , canard throw and stall for that first flight though, canard configs can be pretty unstable pitchwise.probably would be good idea to go real easy with the canard throw.wading into pretty deep dark and murky aeroplane waters with a canard !

[HZM]

Arrgggghhhhhh Its always sickening looking at the progress he is going on ....... it make me jealous of wat he can do

Just to let u know my eyes is on this thread keep it going


Mike

[AstroBoy]

Originally posted by D.Yeo
that is gorgeous truly gorgeous !

would look fantastic in the air no doubt

and that nose cone is so well done

careful with the CG , canard throw and stall for that first flight though, canard configs can be pretty unstable pitchwise.probably would be good idea to go real easy with the canard throw.wading into pretty deep dark and murky aeroplane waters with a canard !

D.Yeo: thanks , I've got a SECRET!
The information on the C.G.! I've found it on the net on someone sending his cozy mark iv for flight testing by a company called the CAFE Foundation and all flight data recorded was published on this link below, in all the maze of info, I FOUND THE C.G. POSITION!!! and i deligently incoporated the C.G. into my cozy CAD drawing, i know very well that canards are very very particular with C.G. and if i did not find this info, i wouldn't have ventured into canards!

http://members.eaa.org/home/flight_reports/cozy_markiv.html

Thanks Mike for the encouragement, don't be jealous, you can do it too once you put your heart into it, trust me

[AstroBoy]

ok, managed to linkage up the canard servo with 0.32" music wire.

[AstroBoy]

cutting out the main wing template, very straight-forward, just cut the drawing, spray the 3M77 glue, wait for 5 minutes, paste it onto the foam and start cutting away, total time taken to cut 4 wing halves...= 20 minutes

[AstroBoy]

now both wing halves are now ready to be glued together using 3M77 spray glue, i did use packing tape to stick into the cut grooves to spread out the load from the dia. 4mm CF hollow tube spar

[AstroBoy]

after gluing, LOTS OF WEIGHTS !! at this moment, my children's hardcover storybooks are the best weight spreaders, just put anything heavy on top and leave them overnight!
I must say that joining the 2 halves is not an easy task, have to get my wife to help me hold one side of the wing while i align/tackle the other wing Wifes can be very useful! you know what i mean Really appreciated her help