RE: Bernard Dumas' Canadair CL-215  
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RE: Bernard Dumas' Canadair CL-215 - 8/15/2006 10:48:31 AM   
g_boxwood



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From: Torino, ITALY
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quote:

ORIGINAL: grinder-RCU

10" wheels on the nose gear, 16" on the mains.


Thanks grinder for the tech drawing and the specs.

@ 1:12.833 they should be around 0.75" nose and 1.25" mains?!

It seems something's wrong... they're too small. Maybe I misunderstood the info you gave.


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Giacomo 'g_boxwood' Bosso

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RE: Bernard Dumas' Canadair CL-215 - 8/15/2006 10:52:57 AM   
g_boxwood



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From: Torino, ITALY
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quote:

ORIGINAL: morino

now i have watched my blue prints they are from steve gray and if that plane is steve gray design i am builiding it it doesnt look totaly autenthic but is much simple to make dan bernards i think.

Bernard's plans are not complicated, they're well thought-out and lead to a much more scale structure.

I like them very much. Some mods here and there, very few errors... nothing to worry about in the end.


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       Post #: 77

RE: Bernard Dumas' Canadair CL-215 - 8/15/2006 11:03:13 AM   
g_boxwood



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From: Torino, ITALY
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quote:

ORIGINAL: John Hawkins

There is a video of a friend's CL-215 on my page top left here. Not sure of the plan or details but it uses OS52s for power.

Nice video John! The dual 52s sound incredibly realistic to me!

And it confirmed waterline on this model is very high. Also wing-tip dragging may be a concern.

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RE: Bernard Dumas' Canadair CL-215 - 8/15/2006 11:58:37 AM   
John Hawkins



Posts: 278
Joined: 6/8/2003
From: Halifax, NS, CANADA
Status: offline 		I wondered about the wheel size too but maybe we are confusing wheel and tire sizes. My truck has 15" wheels but the tires are much bigger. They are P235 x.75 which I think means 235mm depth times 75% of that in width so we would have to add two times 235 or 470mm to the 15" wheel diameter = 470/25.4 = 18.5" + 15" = 33.5" I must measure to confirm but it sounds about right. So then for the CL215 one would need to know the tire size as well as the wheel size. Make sense?


-----------------------

Later: The tire is actually 27" so maybe it is 235 wide and 75% of that high. That would work out to about 29" diameter but the tire fits inside the wheel an inch or so which would work out right. In any event confusion about wheel size and tire size probably accounts for the apparent smallness of the scale wheels.

< Message edited by John Hawkins -- 8/15/2006 12:21:09 PM >

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       Post #: 79

RE: Bernard Dumas' Canadair CL-215 - 8/16/2006 5:58:58 AM   
grinder-RCU



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From: London, ON, CANADA
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quote:

ORIGINAL: g_boxwood

quote:

ORIGINAL: grinder-RCU

10" wheels on the nose gear, 16" on the mains.


Thanks grinder for the tech drawing and the specs.

@ 1:12.833 they should be around 0.75" nose and 1.25" mains?!

It seems something's wrong... they're too small. Maybe I misunderstood the info you gave.


Now you got me thinking? .....let me email an CL-415 mechanic and i'll get back to you.


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RE: Bernard Dumas' Canadair CL-215 - 8/16/2006 6:07:57 AM   
grinder-RCU



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From: London, ON, CANADA
Status: offline 		On my plans for my 160"ws CL-415 the main wheels are 7". I sent the email hopefully i'll hear back soon.

Grinder.

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       Post #: 81

RE: Bernard Dumas' Canadair CL-215 - 8/16/2006 8:23:34 AM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		Thank you guys! I couldn't find any infos on my own. BF Goodrich lists all the airplanes they manufacture tire for but not even a spec...

About Bernard's plans:

- main wheels are 80mm and I chose 3-1/4" Robart 115
- nose wheels are 55mm and I chose 2" Robart 110

After I measured the wheels on my 1/72nd scale model I built in the past it seemed that
- main wheel dia is ok while
- nose dia is larger which is fine if you'll operate the model from a grass runway as I'll do.

I'm looking forward to get the original dims anyway. Thank you grinder.

BTW: what 160" size plans do you own???

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RE: Bernard Dumas' Canadair CL-215 - 8/16/2006 4:12:40 PM   
grinder-RCU



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quote:


BTW: what 160" size plans do you own???


I got my plans from www.mraerodesign.com he has a 80"version and i asked him to blow up the plans 100% to 160"ws and he said no problem. He sent me 90' ( feet ) of rolled plans.

Grinder.


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RE: Bernard Dumas' Canadair CL-215 - 8/19/2006 2:33:00 PM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		I'm back with little work done. When I get back from holidays it usually takes me some time to switch back to model-airplane-building mode. Dunno why...

I always start again with some easy and not-so-complicated matters.

1) I checked nose gear steering in the mock-up and it worked fine. I won't place the servo in the well, I'll use a bell-crank instead for a few reasons:

- it lets me operate both the nose gear and the water rudder through the same servo; the servo in the ample fuselage connects to the two bellcranks via pull-pull cables;
- a bell crank axle is easier to water-proof than a servo IN CASE of amphibious operation of this model.

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RE: Bernard Dumas' Canadair CL-215 - 8/19/2006 2:39:18 PM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		2) You already discovered I'm fond of sanding blocks ... but to ensure the most uniform sanding of the hull possible I had to custom-make one for the purpose; it was then a breeze to sand the hull...

Notice in the red circle that I sanded the stringer to follow the bulkheads; after sheeting the hull I'll glue the splash rails like those the full-scale vehicle features.

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RE: Bernard Dumas' Canadair CL-215 - 8/19/2006 2:41:55 PM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		3) I thought I needed a cradle before or later: I had to make one!

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RE: Bernard Dumas' Canadair CL-215 - 8/20/2006 8:33:37 AM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		4) I had to correct a mishap: for reasons I don't know, the new bulkhead turned out to be lower than the others and that forced me to bridge the gap; it was easily done with some scrap balsa sanded down to the correct height.

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RE: Bernard Dumas' Canadair CL-215 - 8/20/2006 8:38:14 AM   
g_boxwood



Posts: 342
Joined: 1/28/2005
From: Torino, ITALY
Status: offline 		5) After sheeting the tail section I felt the keel element is too thin (3mm or 0.125" ) to properly aid in positioning and keeping the sheeting itself in place. Before having the same problem with the hull, I decided to ad some 1/4" square stick next to both sides of the keel. The little blocks were then sanded to shape.

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