RE: Bernard Dumas' Canadair CL-215  
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RE: Bernard Dumas' Canadair CL-215 - 5/15/2007 2:37 AM   
Kmot



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Status: offline 		Yeah, awesome stuff! Why not machine all the way through on some of those parts?

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RE: Bernard Dumas' Canadair CL-215 - 5/15/2007 8:04 AM   
g_boxwood



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Status: offline 		Dunno way... it would be easier too... that's how they're designed on the plans and I think they look nicer and 'more complicated'.

You got the point anyway, since when I dealt with a machinist and gave him plans of the lower arm I considered the cut-through option as the simpler one in case he opted for a quicker and less expensive job.

Thanks for the kudos akflyer!

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RE: Bernard Dumas' Canadair CL-215 - 6/19/2007 2:22 PM   
g_boxwood



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Status: offline 		I'm sorry I'm not working on the 215 at all in this busy period but in the last few days I found some time and patience to deal with the main gear physical mock-up.

At first I wasn't sure whether or not to build it, but as things are getting together I feel happy I did it.

I want to be sure that the cinematics will work fine and that every single gear element will be fine the way they have been CAD modeled. I want to be sure of that BEFORE committing the gear to the machinist.

I wanted to make the elements as simpler as they could possibly be but I ended up making them as complex as they are. The only ones I really simplified were the gear legs.

I still need to finish some elements, but the attached pics show some of the already done work.

I also got my Bimba actuators so I plan to the test the whole system with the wooden mock-up before having it machined.

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RE: Bernard Dumas' Canadair CL-215 - 6/20/2007 12:32 PM   
g_boxwood



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Status: offline 		OK, I finished all the elements and put them together: they do work!!!

Some trimming here and there will be required but everything looks really fine.

Now that I better understand the role of every single piece I can re-draw them to make them easier to machine in case it speeds things up a bit and/or keeps costs down.

I'll now correct some interferences and try to operate the whole sys, I'm both excited and worried at the same time... the Bimba cylinders come with HUGE clevises... I need to find something different...

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RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 11:31 AM   
g_boxwood



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Status: offline 		Attached are a few pics of the entire assembly in primer w/ Robart 3-1/4" wheels and the upper locking/unlocking cylinder. The actuating lower cylinders are still missing.

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RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 12:30 PM   
Strykaas



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RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 9:24 PM   
teresos



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Status: offline 		Good work Giacomo....
Don't forget to place the wheel axle in about 4 degrees , so wenn the all system lock's in the upper position the wheel must be as flat as possible with the sides of the fuse.

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RE: Bernard Dumas' Canadair CL-215 - 6/28/2007 7:09 AM   
g_boxwood



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Status: offline 		You're right Teresos, fact is that the gear legs in the mock-up are the only simplified items... I drilled the axle bolt hole flat.

Why should the wheels be in a plane parallel to the fuse sides?

I'm asking it since I'll be using Robostruts as the gear legs and I don't think I'll be able to cant the axle down @ -4°. In a Robo the axle is perpendicular to the leg axis.

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RE: Bernard Dumas' Canadair CL-215 - 6/29/2007 5:13 PM   
teresos



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Status: offline 		I personally believe that if the wheels are parallel to the fuse, and close to it like the real one ,then the flying will be less affected . Moreover ,when this 6 Kg-- and more-- plane is about to land ,it is suggested that the wheels are vertical to the ground ,so that the axles and generally the whole landing system will be less distressed.

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RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 1:58 AM   
teresos



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quote:

ORIGINAL: g_boxwood


I'm asking it since I'll be using Robostruts as the gear legs and I don't think I'll be able to cant the axle down @ -4°. In a Robo the axle is perpendicular to the leg axis.


Let me make a suggestion
You can try to increase the length of the clevis ,where the Robo join the upper strut, so the " package" Robostrut-Axle-Wheel , are vertical to the ground ......,or share the whole distance in two halves and increase-decrease the length of the upper and lower clevis.

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RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 1:53 PM   
LADISLAV


 

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Status: offline 		This drawing from maintenance manual might help.

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RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 6:10 PM   
g_boxwood



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Status: offline 		Thanks both of you. I'll deal with it later on. And I'll come back to you for advises.

I re-assembled the gear after a coat of paint I sprayed just to seal the wood. Don't worry about the grey... it is the only one I had readily available.

I messed up with the Bimba order and I got the cylinders with an uncorrect air-port alignment: even if the options are only 2 (rotated 90° or not) ... I ordered exactly the opposite I needed.

You can see what I mean in pic #3: the air-ports are coming straight out of the bulkhead, where I grinded a window. This is not good and I preferred to work onto the attachment points of the cylinders themselves (pic #4) to get the correct orientation of the ports. The extra hole and the removed material doesn't seem an issue in terms of cylinder strength.

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RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 6:16 PM   
g_boxwood



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Status: offline 		Next I wanted to connect the upper cylinder to the air system to test if it helps getting the gear up/down: pic #1 shows how much it lifts both legs. Then the arm becomes too little and it can't do anything else. This is no matter anyway, since the main work will be done by each lower cylinder, the upper one being deputed to locking and unlocking only. Just curious...

Pic #2 (in the middle) shows the correctly rotated air-ports on the upper cylinder, NOW facing down!

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< Message edited by g_boxwood -- 7/3/2007 5:47 PM >

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RE: Bernard Dumas' Canadair CL-215 - 7/4/2007 10:17 PM   
teresos



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quote:

ORIGINAL: g_boxwood



Now that I better understand the role of every single piece I can re-draw them to make them easier to machine in case it speeds things up a bit and/or keeps costs down.

I'll now correct some interferences and try to operate the whole sys, I'm both excited and worried at the same time...


One more mod you must take care off before machining ......

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RE: Bernard Dumas' Canadair CL-215 - 7/5/2007 6:34 AM   
g_boxwood



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Status: offline 		AAAAAhhhhhhhh!!!!

Thanks for sharing!

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RE: Bernard Dumas' Canadair CL-215 - 7/17/2007 8:48 PM   
Turbo_jet


 

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Status: offline 		[image][/image]I dont speak english.Please picture wing.

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RE: Bernard Dumas' Canadair CL-215 - 7/18/2007 6:48 PM   
teresos



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Status: offline 		Have you done anything with the cockpit ?.
This is mine design .I decide to make it in one, separate piece, so I can have access inside the cabin....

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RE: Bernard Dumas' Canadair CL-215 - 7/18/2007 6:58 PM   
teresos



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Status: offline 		The windshield is made from lite ply , the rest one is made from some scrap balsa sheet ,joined together .

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RE: Bernard Dumas' Canadair CL-215 - 7/18/2007 7:06 PM   
teresos



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Status: offline 		......and.. , after some hours of ,triming and laping...

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RE: Bernard Dumas' Canadair CL-215 - 7/18/2007 7:59 PM   
Turbo_jet


 

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RE: Bernard Dumas' Canadair CL-215 - 7/18/2007 9:31 PM   
g_boxwood



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Status: offline 		Really really nice teresos!!! The notch is definitely a top trick!

Did you get all the infos from the plans or was it a try & fit process or both?

I always thought the plans lacked all the required infos to easily build the cockpit! Am I missing something?

This is a really bad period, last exam of the session is tomorrow then probably holidays in Greece (but I'm not sure about them any longer after I spoke with my girlfriend a few minutes ago) then back to studying in time for September... Not much time and energy left for building... I'm really pissed off!!!!!

Turbo Jet: no wing has been built yet, at least on my side of the building.

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RE: Bernard Dumas' Canadair CL-215 - 7/19/2007 1:03 AM   
teresos



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Status: offline 		Turbo Jet: First pic is the plan.....next 2 is the wing........
You can find the plans here ... http://bernard.dumas.chez-alice.fr/Plans.htm


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RE: Bernard Dumas' Canadair CL-215 - 7/19/2007 1:37 AM   
teresos



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ORIGINAL: g_boxwood


I always thought the plans lacked all the required infos to easily build the cockpit! Am I missing something?

Yes , it was a try & fit process , and hopefully it was successful .....I believe that the plans are not so instructional at this point of building .

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RE: Bernard Dumas' Canadair CL-215 - 7/19/2007 12:07 PM   
Turbo_jet


 

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RE: Bernard Dumas' Canadair CL-215 - 7/19/2007 3:45 PM   
Kmot



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Status: offline 		It is very enjoyable to watch such masters building their airplanes!

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