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Old Sep 07, 2014, 04:10 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Build Log
Scale Build-Off 4 Super Constellation 60" Scratch Build

Warning: This design effort will likely take a long time but my goal is to create a balsa and ply park flyer size Super Connie.

Just starting out with the interlocking fuselage design. This is just the beginning of the nose section.

Looking to meet the following goals:

1. 60" wingspan
2. 2lbs all up weight
3. 250-300 size motors
4. Optional retracts and flaps (may go over the parkflyer weight limit)
5. Interlocking, self jigging construction

Dave
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Last edited by payne9999; Oct 18, 2014 at 12:08 PM. Reason: Adding the build to the contest
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Old Sep 07, 2014, 05:26 PM
This is a fine fiddly business
Robert R's Avatar
United States, WA, Marysville
Joined May 2009
1,413 Posts
Hurray!
Robert
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Old Sep 07, 2014, 05:27 PM
71% of the world is runway . .
Bart83's Avatar
Nederland, ZH, Oostvoorne
Joined Jun 2009
1,779 Posts
Have fun !!


Bart
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Old Sep 07, 2014, 05:46 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Quote:
Originally Posted by Bart83 View Post
Have fun !!


Bart
Bart,

In the past year I have been trying to learn how to design aircraft in SolidWorks. I have been using SolidWorks for many years as a product engineer but designing aircraft shapes is a whole different world.

In the past year or so I have gained a new appreciation for what folks go through just to design one kit. I did a 3 meter glider with plans and it was a huge effort. This will really be my first effort for a full design and plans for a powered aircraft.

The effort you went through for the Empire and the DO 24 must have been hundreds of hours.

Dave
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Last edited by payne9999; Sep 07, 2014 at 09:24 PM.
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Old Sep 07, 2014, 08:12 PM
Parkcityflier
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Park City, UT, USA
Joined Aug 2001
1,625 Posts
There are a lot of us out here that also really appreciate Bart's work, too. I, in particular, since I am in the final home stretch for completion of the Do-24 and plan to start on an Empire later this year, after I cough up the last of the balsa dust from the Dornier !!

Jim
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Old Sep 07, 2014, 09:28 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
I would also like to do the Empire Short S30 this Winter. I will have to see if I can swing it on my limited hobby budget.

Adding more pieces to the new fuselage. The part with the blue marks will be 1/16" ply. Right now my Connie is in for maintenance due to the whole nose gear assembly pushing through the top of the fuse. So, in this design that area will be reinforced.
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Old Sep 08, 2014, 12:17 AM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Every part in the assembly will have mass density added. The CAD program automatically calculates the weight of each part. Hopefully this will allow me to make predictions about final weight and if 2 lbs AUW can be achieved at 55".
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Old Sep 08, 2014, 02:20 AM
71% of the world is runway . .
Bart83's Avatar
Nederland, ZH, Oostvoorne
Joined Jun 2009
1,779 Posts
Jim & Dave , thanks for the very kind words. Your right on the many many hours it takes to make a design for a rc aircraft in cad. Especially since i am still learning cad . . . (good thing it is so much fun). I'll bet your your experience that now

The Dornier Jim is building was an amazing aircraft to make in Rhino , seeing being build here on rcg is very cool. Jim is making it into a work of art.

I like it very much that you make a thread on the design process Dave , it is so interesting to see how you aproach it.

Cheers,

Bart
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Old Sep 08, 2014, 05:52 PM
Wanted for breaking OHM's law
Dennis Sumner's Avatar
United States, MI, Canton
Joined Sep 2002
1,644 Posts
Dave,

I followed your larger bird but this is more in line with my car for transport. The Connie is one of my favorite airliners...
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Old Sep 08, 2014, 10:57 PM
This is a fine fiddly business
Robert R's Avatar
United States, WA, Marysville
Joined May 2009
1,413 Posts
Dave,
My potential building queue is now one plane longer.
Robert
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Old Sep 08, 2014, 10:58 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Some Progess

Tonight's work.....

Also, spent some time on a weight guesstimate looks like the weight budget will be razor thin:

Motors: .60 oz 2.4 oz
ESC: .45oz 1.8oz
Battery 3.6oz 3.6oz
Wire 4oz 4oz
receiver .3 .3oz
servos 1.8 1.8oz
Tires Nose .30 .30
Tires Mains 1.2 1.2
Gear .6 .6
Pushrods .75 .75
covering
Opt Retracts 2.3 2.3
----------------------------------------------
Total 19.05 ounces 1.22lbs

Fuse Framing ? ~ 6 oz.

Wing Framing ?

H-stab ? ~3oz.
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Old Sep 08, 2014, 11:59 PM
This is a fine fiddly business
Robert R's Avatar
United States, WA, Marysville
Joined May 2009
1,413 Posts
Dave,

I think the park flyer Connie definitely fills a currently empty niche in the list of available kits.

There is already the nice "big" Connie kit which you built but there really isn't a a kit in the 50ish inch range. So thanks a bunch.

Robert
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Old Sep 10, 2014, 02:42 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Worked a little during lunch break, today's progress:
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Old Sep 11, 2014, 09:51 AM
Registered User
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United States, CA, Garden Grove
Joined Oct 2000
12,072 Posts
Easily removable wings would be a good option if you have a small car. I can just barely fit my ,40 size Maxford Gee Bee in the back seat of my Forester. Rear part is for my mobiility scooter sections.
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Old Sep 11, 2014, 11:31 PM
Balsa&Tissue
payne9999's Avatar
United States, OR, Beaverton
Joined Jan 2011
2,610 Posts
Fuselage framework complete, calculated weight: .39 lbs or about 6 Ounces.
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