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Old Jun 20, 2010, 05:44 AM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
Joined Dec 2009
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Build Log
Cloudcraft Mercury Now with maiden video

Hi. I am hoping to build a 45" Cloudcraft Mercury.

Has anyone or know anyone who has built a Cloudcraft Mercury?
I still cant find any info or pictures of a C.C. Merc

I found the plan on the first page in the 2010 build off thread.
The plan was converted to .pdf and enlarged 643%, to get a 45" span, it is fuzzy, but good enough.

I changed the unrecognizable old airfoil to a good old Clark Y airfoil and plan on a tapered bass/carbon/balsa laminated spar and tapered laminated balsa leading and trailing edges.

The fuse is mostly 1/8 sq. balsa sticks with a few formers to round the top of the fuselage.

Any ideas or info would be greatly appreciated.

Maiden flight. Sorry the video is low quality, we used a digital still camera that has video.

http://www.youtube.com/user/31tudor#p/a/u/0/RfdlRXloCss

http://www.youtube.com/user/31tudor#p/a/u/1/Cak3hra-3gc

Thanks
O&W
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Last edited by orange&white; Aug 24, 2010 at 01:36 PM. Reason: plane is done
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Old Jun 20, 2010, 08:16 AM
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I think the original C-C kits were designed around rubber power. You cannot simply enlarge the plan to some certain size without checking upon the basic formulae and arrangements.


You plan to get this done this year?


Wm.
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Old Jun 20, 2010, 03:12 PM
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Southampton, UK
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The CC Mercury is one I fancy building in the future - but scaled up from 24" to 72" for electric.

any reason why you just didn't double everything and go for 48" ??

let us know how you progress

john
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Old Jun 20, 2010, 05:14 PM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
Joined Dec 2009
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Wm.

I understand what you are saying, I have been using Chuck Cunningham's rc design ideas for years. At the size I am going to use, the enlarged rubber plans structure will be fine for a small electric plane. I hope to start cutting balsa in a few days.


John.

I saw the Merc when you posted the pic, where did you get it?
I used the same picture then converted it to .pdf to be able to scale and tile the plan. It took 643% to get a 45" span.

I plan to use a Esky 400xt and a 10-5 prop and a Rhino 3s 1250mah batt.

The C.C. Mercury has a long fuselage and a short wing and I will probably fly it like a sport plane, barnstorming the local park.

Scott
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Old Jun 21, 2010, 12:07 AM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
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Here is the plan taped together and pinned on the wall.
The wing is 45" with a 7.5" chord marked at the center.
The fuselage is 34" tip to tail.


Scott
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Old Jun 21, 2010, 09:14 AM
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A very strong resemblance to the Comet 'Dipper' of 1946. Perhaps influenced by the 'Mercury' ?
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Old Jun 22, 2010, 05:55 AM
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Southampton, UK
Joined May 2007
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Scott,

I copied the Mercury off an A5 size newsletter.

I have - thru a torturous route ( I am not a draughtsman - managed to get a working plan at 24" span available either as DWG or DXF formats. The standard is not CAD standard but is workable to experienced builders.

both these files are about 4Mbs which I think are too large for here - but I will try anyway.

maybe Planeman could work his magic and convert to PFD - I can only read pfd as I dont have the full program - no need and too many $$$$$$

I could also scale up in the dwg and DXF formats ( I favour 48" for dual role - electric free flight and also RC.)

let me know what you want and I will email direct if the forum upload quality not good enough

john

nope the uppload wont accept dwg or dxf files - so need to email
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Old Jun 22, 2010, 05:40 PM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
Joined Dec 2009
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Hi John.
I know nothing about cad drawing , but I can convert DXF to pdf files.
If you can size the Mercury to 48" as a DXF file, I can convert it and send the files back to you through the thread or to your email.

If Planeman wanted to redraw the Cloud Craft Mercury plan, I couldn't thank him enough. wink...wink...

Scott

31tudor@charter.net
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Old Jun 22, 2010, 07:20 PM
Dave Segal
Philadelphia PA USA
Joined Jun 2001
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The AMA Plans Service has the Cloudcraft Mercury plan and can enlarge it for you. It is listed under Mercury.
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Old Jun 23, 2010, 03:05 PM
Making wood fly since 2007
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USA, MN, Rochester
Joined Mar 2008
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These oldtimer planes can be scaled up and still fly very well. Just check out Evan's 16' wingspan Quaker, weighs between 30 and 30 lbs.

http://www.rcgroups.com/forums/showt...ghlight=quaker

Wayne
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Old Jul 06, 2010, 03:18 AM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
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Ok I am off....

I cut leading edges from 1/4" medium balsa and the trailing edges and wing tips from 1/8" medium balsa, the ribs are 3/32 balsa. I havent made the spars yet.

Scott
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Old Jul 06, 2010, 04:15 AM
TEAM OZSKUNKWORX
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KORUMBURRA IN THE BOONDOCS
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Sweet dude looking good mate

Shane
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Old Jul 06, 2010, 08:26 PM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
Joined Dec 2009
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I forgot how much work there is building a plane from scratch

Cutting parts, planing parts, sanding parts, making spars, just to get to the building part. You "laser cut" scratch builders have it easy Although it doesn't show, I have been busy for the last few hours making a wing kit.
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Old Jul 07, 2010, 01:18 AM
Scott R/C Time Pilot
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NorthBend/Coos Bay,Oregon USA
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I know I am a little slow, but one wing half is done
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Old Jul 07, 2010, 01:40 AM
TEAM OZSKUNKWORX
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Dont stop now Scott your on a roll.

Shane
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