RE: Bernard Dumas' Canadair CL-215  
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RE: Bernard Dumas' Canadair CL-215 - 5/15/2007 2:37:32 AM   
Kmot



Posts: 7524
Joined: 6/11/2003
From: Northridge, CA, USA
Status: offline 		Yeah, awesome stuff! Why not machine all the way through on some of those parts?

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Ahhh......screw it!

(in reply to akflyer)
       Post #: 176

RE: Bernard Dumas' Canadair CL-215 - 5/15/2007 8:04:55 AM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

(in reply to Kmot)
       Post #: 177

RE: Bernard Dumas' Canadair CL-215 - 6/19/2007 2:22:23 PM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

(in reply to g_boxwood)
       Post #: 178

RE: Bernard Dumas' Canadair CL-215 - 6/20/2007 12:32:21 PM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

(in reply to g_boxwood)
       Post #: 179

RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 11:31:29 AM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

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       Post #: 180

RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 12:30:11 PM   
Strykaas



Posts: 3901
Joined: 3/21/2003
From: Paris, FRANCE
Status: offline 		Awesome

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ProBro #2077
http://image2-0.rcuniverse.com/e1/forum/upfiles/57402/Nl29490.jpg

(in reply to g_boxwood)
       Post #: 181

RE: Bernard Dumas' Canadair CL-215 - 6/27/2007 9:24:20 PM   
teresos



Posts: 47
Joined: 3/20/2007
From: Thessaloniki, GREECE
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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(in reply to Strykaas)
       Post #: 182

RE: Bernard Dumas' Canadair CL-215 - 6/28/2007 7:09:27 AM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

(in reply to teresos)
       Post #: 183

RE: Bernard Dumas' Canadair CL-215 - 6/29/2007 5:13:02 PM   
teresos



Posts: 47
Joined: 3/20/2007
From: Thessaloniki, GREECE
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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       Post #: 184

RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 1:58:31 AM   
teresos



Posts: 47
Joined: 3/20/2007
From: Thessaloniki, GREECE
Status: offline
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.

(in reply to g_boxwood)
       Post #: 185

RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 1:53:04 PM   
LADISLAV


 

Posts: 96
Joined: 7/19/2004
From: Dundas, ON, CANADA
Status: offline 		This drawing from maintenance manual might help.

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(in reply to teresos)
       Post #: 186

RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 6:10:30 PM   
g_boxwood



Posts: 341
Joined: 1/28/2005
From: Torino, ITALY
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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Giacomo 'g_boxwood' Bosso

(in reply to LADISLAV)
       Post #: 187

RE: Bernard Dumas' Canadair CL-215 - 7/2/2007 6:16:24 PM