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RE: Bernard Dumas' Canadair CL-215 - 9/21/2008 9:24 AM   
pappy69



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From: THESSALONIKI, GREECE
Status: offline 		Mille grazie Giacomo



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< Message edited by pappy69 -- 9/22/2008 7:29 PM >

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RE: Bernard Dumas' Canadair CL-215 - 11/17/2008 9:57 AM   
pappy69



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From: THESSALONIKI, GREECE
Status: offline 		I found the retracts i will use for my canadair!!
hehehehehehehehehehehehehehehehe


The last one is for the steering

seriously now!!

you can see the progress of my CL-415 here:
http://www.aeromodelismos.gr/index.php/topic,1925.0.html

The thread is in Greek but slowly i translate it in english so you can follow without a problem!!

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< Message edited by pappy69 -- 12/21/2008 7:05 AM >

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RE: Bernard Dumas' Canadair CL-215 - 12/23/2008 5:45 PM   
teresos



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Status: offline 		Giacomo,...where...and how are you my friend ? I miss you...!!!

After a long break, due to work, I found little time to deal with the model.
However,I have not proceeded with the construction,
but I've done a few modifications... ( floats-tabs-water bay-scoop mechanism )

The first modification that I made was to make the floats to tear-off, in case they had to be replaced for any reason.
I cut the support base at the height of the lower surface of the wing and after making two holes I put two pieces of carbon fiber tube.
At the other edge of the tube, I put 2 screws M4 after having their heads removed.

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< Message edited by teresos -- 12/27/2008 10:55 PM >

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RE: Bernard Dumas' Canadair CL-215 - 12/23/2008 5:50 PM   
teresos



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Status: offline 		I ve also made a new base from plywood which I put at the lower wing spars.




.....to be continued....




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RE: Bernard Dumas' Canadair CL-215 - 12/23/2008 6:07 PM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		The second modification had to do with the tabs.
I liked Giacomo‘s tab idea so much that I started cutting the rudder without having second thoughts.
However since the original blue prints did not include something like this and my rudder
was already finished I had a hard time to create tab’s small wooden hinges (…however.. the… joy of creation…)

I liked the result that much (thanks once again Giacomo!) that I am now thinking to put tabs in all control surfaces.




.....to be continued....



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RE: Bernard Dumas' Canadair CL-215 - 12/23/2008 9:18 PM   
nubiros


 

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Status: offline 		Hi Dear George !

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RE: Bernard Dumas' Canadair CL-215 - 12/25/2008 12:53 AM   
teresos



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quote:

ORIGINAL: nubiros

Hi Dear George !

Hi , Hadi . I've already sent you a mail ........

The next thing that I finished was the scoop mechanism.
I used square bronze tubes 10x10mm and 8x8mm (external dimensions). With a sand paper
and some more persistence the smaller 8x8 can softly enter in the larger tube.
In order that it moves smooth and in order to avoid jams and unnecessary friction I rounded a little bit
all 4 corners with the help of a sand paper.
I cut the edge of the inner tube and folded one of the sides at the cutting point so as to create
the curvy finish that leads water upwards. In one side of the outer tubes I put 2 round pieces
in order to be able to connect the scoop mechanism and the water tank with 2 rubber tubes.
This way I will be able to remove and repair each piece separately if needed.

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RE: Bernard Dumas' Canadair CL-215 - 12/25/2008 1:02 AM   
teresos



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Status: offline 		I attach some relative photos cause as the say....... a picture is a thousand words.

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RE: Bernard Dumas' Canadair CL-215 - 12/25/2008 1:06 AM   
teresos



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....some more



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RE: Bernard Dumas' Canadair CL-215 - 12/25/2008 1:12 AM   
teresos



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...and again



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RE: Bernard Dumas' Canadair CL-215 - 12/25/2008 1:23 AM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		I gave a lot of consideration to how to use the scoop mechanism with the servo.
I ended up at the following solution. I cut a small piece of aluminum (2mm) on which
I made 3 holes. The two of them are exactly at the point that the 2 pushrod come out
and the third is exactly at the middle. 3 screws adjust the aluminum piece on the pushrods.
Then I cut a servo tray from 3mm ply which was steadily screwed
on the center section of the main gear. The servo was put that way so the horn is exactly
above the pushrod and scoop mechanism.

A short video below shows the test of the system.
http://www.youtube.com/watch?v=Ev6qiBOCsOE



.....to be continued....

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< Message edited by teresos -- 12/25/2008 2:24 AM >

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RE: Bernard Dumas' Canadair CL-215 - 12/26/2008 5:54 PM   
pappy69



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From: THESSALONIKI, GREECE
Status: offline 		I have to say that i feel privileged that George and i live in the same town.
I guess he helps me with his ideas and i motivate him to continue with his work.

I hope our planes will fly their maiden flight together someday in the (NEAR!!!!!) future.

By the way George! What about the balsa wood that we glass on Wednesday?

< Message edited by pappy69 -- 12/28/2008 7:49 AM >

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 9:57 AM   
nubiros


 

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this is our cl full skelet

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 4:20 PM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		Very nice, Hadi.
I saw the tubes at the wing. You've decided to make it in two pieces. More job... but less mass to handle.
I notice that you used wooden sticks at the stabilizer. Are you gonna glue the tail/fin permantly on the fuse?

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< Message edited by teresos -- 12/28/2008 4:22 PM >

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 4:34 PM   
g_boxwood



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quote:

ORIGINAL: teresos

Giacomo,...where...and how are you my friend ? I miss you...!!!

Hi George!

I'm pretty fine and I'm happier than ever as I started working after taking my degree in mid July.

The only drawback is that I feel really tired as I get back home and I'm not in the right mood for building...

I'll get back to the 215 as soon as I 'tune' myself accordingly: in the meanwhile feel free to post your progress! There's nothing wrong with it!

quote:

The first modification that I made was to make the floats to tear-off, in case they had to be replaced for any reason.

That's a good idea, no one really knows what could happen and having the chance to replace stuff is always wiser.

Tip floats tend to dig into the water from time to time and they exert some pretty shear stresses on the anchoring points: make sure yours are strong enough; they seem to BTW ;-).

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 4:41 PM   
g_boxwood



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quote:

ORIGINAL: teresos

I ve also made a new base from plywood which I put at the lower wing spars.

I thought about a ply "box" as well, and I placed it between front and rear spars with 2 horizontal plates instead of 1 for greater stiffness.

These 2 pics show it but they are not as detailed as I want them to be: hope you'll get what I mean.





This way the tip-float loads are transferred to the wing section as a whole, top and bottom front and rear spars.

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 4:56 PM   
g_boxwood



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ORIGINAL: teresos

I gave a lot of consideration to how to use the scoop mechanism with the servo.
I ended up at the following solution. I cut a small piece of aluminum (2mm) on which
I made 3 holes. The two of them are exactly at the point that the 2 pushrod come out
and the third is exactly at the middle. 3 screws adjust the aluminum piece on the pushrods.
Then I cut a servo tray from 3mm ply which was steadily screwed
on the center section of the main gear. The servo was put that way so the horn is exactly
above the pushrod and scoop mechanism.

A short video below shows the test of the system.
http://www.youtube.com/watch?v=Ev6qiBOCsOE

George: your work on the tabs and scooping mechanism is wonderful! keep it coming!

A few notes (sorry about my notes but that's all I can offer for the moment... and they're supposed to be constructive so take the best out of them):

0. please consider the great amount of force placed on the scoops by the flowing water!

1. anchor the scooping drives to the bulkhead accordingly or they will be ripped off abruptly!

2. match the servo torque accordingly: it should be able to retract the scoops 'under load' but I'm not that sure about it; personally I would have chosen a pneumatic actuator (water flow-in control doesn't matter too much).

That's it for now.

I wish you all the best for these last 2008 days and for the upcoming 2009: I'll be back on 5-6th January.



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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 5:27 PM   
pappy69



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Status: offline 		hey nubiros,

is it the way that the picture is taken or your rudder stands a little bit further back than it should?
I think the angle of the extruded upper portion of the rudder should be 90deg to the fuselage!!


< Message edited by pappy69 -- 12/28/2008 5:38 PM >

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 6:52 PM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		Thanks for the notes G. They are welcome ....

The Canadair CL215 which plans Bernard Dumas gave generously to all of us
refer to a Water plane which is able to do water discharges .
But at plans there is no provision for it.
So for a long time I was looking for a way to construct water tanks in such a way
that if there is a problem with functionality or leak proofness, I can easily remove and repair them.
Finally I decided to make a radical change in the fuse and to create a separate space
for the water tank in which I can have access whenever I want.
I would try to describe below the conversion with a few
words ... ... .. and many photos.

< Message edited by teresos -- 12/28/2008 7:08 PM >

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 6:59 PM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		After taking a big breath , I got Dremel in hand ... ...and I started cutting the hull.
I cut the lower formers C27-C28-C29-C30 as well as the bottom stringers
from the height of the former C26, and after some hesitation ...I cut the keel from the
level of the former C 26.


.....to be continued....


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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 7:27 PM   
nubiros


 

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Status: offline 		hi guys
we have some hot pics these are our latest photo of cl

AND NOW WE HAVE SOME SUPRISE OF OUR LANDING GEARS.



main gear
View My Video[/URL]]nose gear

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 7:32 PM   
teresos



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From: Thessaloniki, , GREECE
Status: offline 		The keel is a key component of construction and thus to strengthen
the hull again I built a framework from 3 pm ply, which was placed
inside the point that removed the formers.



.....to be continued....

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< Message edited by teresos -- 12/28/2008 7:40 PM >

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 7:33 PM   
nubiros


 

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 7:48 PM   
nubiros


 

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From: Isfahan, IRAN
Status: offline 		please tell me that how i can share smaller photo

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RE: Bernard Dumas' Canadair CL-215 - 12/28/2008 7:52 PM   
nubiros


 

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Status: offline 		hi George

why you place the tank under the plane while you have so much free volume on the top of the main board

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