RE: Bernard Dumas' Canadair CL-215

RE: Bernard Dumas' Canadair CL-215 (Full Version)

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FL510 -> RE: Bernard Dumas' Canadair CL-215 (2/11/2007 2:15:36 PM)
I wish I did mine that way. I learned that hinging technique after I had already hinged my surfaces. Jed

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (2/13/2007 7:39:48 PM)
I attached a sample of the plans I'm developing... I still need to fix some details here and there and all I can say is that it can be (= indeed is) a time-comsuming process. A lot of thinking is involved as you have to figure out everything 2D without being able to put it together 3D under your own eyes and without being able to tell from the facts if it is the best solution possible. Needless to say some bugs/improvements will be discovered as the building begins... I know it. Anyway, the stab and elevator are really simple, straight symmetric surfaces, a nice starting point although I began the re-drawing process from the fin and rudder (swept and tapered) back to the end of December. I included all the patterns and their layout on stock sheets (sorry, 4" x 40" European) to provide the required bill of materials. I hate plans w/o patterns that require you to make a lot of copies just to get ready to cut some wood... I will keep you updated.

iquique_32 -> RE: Bernard Dumas' Canadair CL-215 (2/13/2007 7:42:29 PM)
hello, you have photos of the wings, they are possible to be seen if you can since I am constructing the airplane and I am guiding myself by your photos, hopefully you can help Marco from Chile

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (2/14/2007 7:36:31 AM)
Hi iquique! Still no work on the wings... I'll re-draw them as well. What plans do you have? If you're building from Bernard's you can follow his manual: http://bernard.dumas.chez-alice.fr/Atelier6.htm http://bernard.dumas.chez-alice.fr/Atelier7.htm

iquique_32 -> RE: Bernard Dumas' Canadair CL-215 (2/14/2007 8:53:29 PM)
I am guiding by your pictures and the URL that you gave me, I just am beginning to cut to the wood raft, I am in zero but with many desire to make this airplane, once it does it will remove photos to him so that they see it hopefully your you continue helping Marco from Chile

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (2/15/2007 1:05:44 PM)
Glad you're building another CL-215 Marco! Keep us updated and post pictures as you progress!

CL-415 -> RE: Bernard Dumas' Canadair CL-215 (2/19/2007 8:05:21 PM)
FL510 I'm going to get them machined locally. But what did you use to attach everything together. Those 1/8 rod with collars? Thanks again.

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (3/28/2007 6:11:51 PM)
Here I am! back to some work after one of the most boring and useless periods of my life... I won't be able to practice any sport 'till mid April but I can resume hand-works like this! OK. Still need to get the stab and rudder plans finished and printed. In the meantime I'm making the mold for the nose gear doors: - covered the hull with heat-shrink covering [pic 1] - laid some layers of f/g cloth (different weights) [pic 2] - removed the mold and trimmed it roughly [pics 3 & 4]. The monokote-parting trick is excellent: the finish of the mold is good enough without using of any additional parting compounds. Moreover it can be applied directly to balsa surfaces allowing you to make molds at an early finishing stage. Since it was the first time I tried it I was just a bit worried about ruining the balsa sheeting while peeling the covering off: no problem at all, just warm it and be kind! Of course, you need to lightly sand the sheeting again...

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (3/28/2007 6:21:31 PM)
Since the mold surface is quite big somekind of stiffening is highly reccomended: in my case stiffening comes from a wooden framework. It is really important that the framework doesn't force the mold out of its shape (really easy as it is both thin and large): to avoid this - glue every element of the frame with the mold positioned onto the hull where it belongs - make sure each element is not forced hard against the mold; it only needs to contact it here and there 'cause joint strength will come from big fillets. Pictures show: - first 2 elements of the framework in place with epoxy and microballoons fillets - straight trimming of the mold to accept straight framework sides - sides in position with mold back onto the hull; sides are kept in position by masking tape; - fillets on the inside.

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (3/28/2007 7:40:31 PM)
Once done with the four elements the mold feels stronger and stiffer. The last step involves adding the base. I used Gorilla Glue for that. Tomorrow I'll trim the base and start filling, sanding and sealing the wood to get the mold ready for priming and painting.

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (4/4/2007 9:04:43 PM)
The spring-denying weather of these last few days didn't allow me to finish the mold prep in time for Easter... Anyway, mold has been primed a number of times, filled and sanded over and over... Notice the holes in the base-plate: they allow me to firmly grab the mold while sanding, filling and priming. I wish a nice Easter to everyone!

Kmot -> RE: Bernard Dumas' Canadair CL-215 (4/5/2007 6:17:45 AM)
Hi Giacomo! Your work continues to blow my mind! :D Happ Easter to you and yours as well. -Tom

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (4/5/2007 2:24:39 PM)
Thank you Tom! Very kind as usual! Before I leave: I was contacted by a fellow modeler frome Greece, George, who has been working on Bernard's CL-215 for about 2 years now. He told me he has trouble with posting in forums but I hope he will eventually fight his fears and share his project with us. This is a pic of the main gear he machined on his own following Bernard's plans: [img]http://www.geocities.com/gb_teknik/CL-215/Bz77127.jpg[/img]

Strykaas -> RE: Bernard Dumas' Canadair CL-215 (4/5/2007 9:10:43 PM)
Awesome :)

iquique_32 -> RE: Bernard Dumas' Canadair CL-215 (4/23/2007 7:13:36 PM)
I am Marco from chile, your send me the planes that you have in 3d of the wings traceras to my mail mviqq31@gmail.com, try to do them as the original plane but I me do not turn out to be I do not still have aligned, you can help with it, to the wait of your response Marco from Chile

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (4/24/2007 8:31:59 AM)
I haven't worked on the wing plans yet, and still need to finish the tail surfaces... I'll send them to you when they'll be ready!

teresos -> RE: Bernard Dumas' Canadair CL-215 (4/26/2007 9:37:02 PM)
Hi guys..Iam George and i am glad to be here.....at last.... Giacomo , thank you for the mail and Bravo for your work here.! In the past days i look in your video section ,in where Garry made a suggestion about the effectivenesse of the cylinders . I agree with him ,that's why in my project you can't see the third hole (for cylinders ). After some hours of thinking and testing ,i decide that the best place for the holes is , where the arrows are.

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 3:24:38 PM)
Some photos on how the mechanism retract on the up position.... I didn't fit in place the cylinders yet, and that's because i'm constructing them by my own. Perhaps in the end i'll force my self to buy some " robart or bimba" ....but I must try......

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 3:56:49 PM)
Sorry for the big photos............

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 4:33:29 PM)
This is the suspension , and still need's more triming and laping......

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 4:59:32 PM)
This is the upper and lower strut......

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 5:04:30 PM)
......and this is the lock mechanism....

teresos -> RE: Bernard Dumas' Canadair CL-215 (5/5/2007 5:27:24 PM)
First pic is Giacomo's CAD work...nice work...and of course a big thanks to Bernard who gave to us all these plans for free......

g_boxwood -> RE: Bernard Dumas' Canadair CL-215 (5/7/2007 7:54:50 AM)
Amazing work George! It looks awesome and works flawlessy... thumbs up! Thank you for your advice. I'm waiting for the Bimba cylinders to be delivered, the order is taking more than a while... I'm sorry for being extremely slow at the moment but almost 4 months have passed from the surgery and I'm getting back to sport activities to check that my right shoulder is back in business again... that is my priority right now.

akflyer -> RE: Bernard Dumas' Canadair CL-215 (5/15/2007 1:40:25 AM)
I am stuned.. the level of craftsmanship is mindblowing. Nice work to all you guys on the scale gear. all versions look great!

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