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Old Dec 28, 2012, 03:50 PM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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Build Log
5m Akaflieg München Mü23 Saurier scratch build

I have decided to take Fred's drawings and scale them up to 5 meters. I'm doing all of the work in 3D using Rhino. So far I've completed drawings for the stab and part of the wing. I've also cut out the parts for the stab. I couldn't resist doing a little gluing. I still need to do the tip, leading edge and cap strips.

I've attached a couple of pics. Don't you just love how laser cut parts go together like puzzle pieces!

Brian
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Last edited by cpdude; Mar 27, 2013 at 01:30 PM. Reason: Title change
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Old Dec 28, 2012, 03:56 PM
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United States, CA, Folsom
Joined Jul 2007
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Do I sense another test flight in my future? Happy holidays Brian
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Old Dec 28, 2012, 04:20 PM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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You never know. Though I expect this one to be a real cream puff.
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Old Dec 28, 2012, 04:43 PM
CNC Cutter
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United States, IN, Indianapolis
Joined Dec 2005
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Looking good, even from Indy ! :-)

Bob
Hoosier Cutout Service ( formerly NW Cutout Service )
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Old Dec 28, 2012, 04:44 PM
yyz
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USA, CA, Paso Robles
Joined Dec 2004
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Nice Brian! I'm guessing this is going to be electric?

Mike
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Old Dec 28, 2012, 05:20 PM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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Originally Posted by birdofplay View Post
Looking good, even from Indy ! :-)

Bob
Hoosier Cutout Service ( formerly NW Cutout Service )
I just hope that it come out half as nice as Fred's.
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Old Dec 28, 2012, 05:23 PM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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Nice Brian! I'm guessing this is going to be electric?

Mike
Yes sir. Though I haven't worked out the exact size motor yet.
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Old Dec 29, 2012, 01:15 AM
My hangar is,... "almost" full
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United States, WA, Everett
Joined May 2003
4,041 Posts
This will be one of your favorite birds without a doubt. I'll be watching. Thank you for the heads up. I'm on vacation, not watching the forums as much as I normally do. I'm excited you are building from my drawings. It's an honor! She flies like a dream! You are going to be one happy dude! Good luck with the build.

Fred,.. in Cambodia
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Last edited by No Step; Dec 30, 2012 at 05:10 AM. Reason: Remove "design", replaced with "drawing" 8-)
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Old Dec 29, 2012, 02:02 AM
I don't like your altitude
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Joined Sep 2011
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Yes sir. Though I haven't worked out the exact size motor yet.
Will that make it an emu.Them birds don't fly
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Old Dec 29, 2012, 09:34 AM
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United States, IN, Indianapolis
Joined Dec 2005
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Fred would bring his to Skamokowa and just quietly go about cruising around for hours !

A nice quiet valley with Hawks, Eagles, Herons and remnants of the Elk on the runway.

Have a safe trip Fred,

Bob
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Old Jan 05, 2013, 10:21 PM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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Some CAD work and parts to show for it...

Well I've been doing a bit of CAD work lately and I've gotten to the point where I felt like cutting some more parts. I ended up cutting all of the wing ribs, sub-leading edge parts and some of the shear webs. Everything seems to fit together very well. I also cut some fuselage parts out, however, they went off to my building buddy before I got a picture of them. The plan at this point is to build two planes at nearly the same time.

Brian
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Old Jan 05, 2013, 10:54 PM
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United States, CA, Cameron Park
Joined May 2007
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I think I left a few ribs at your shop....

Looking forward to do this build together. Fuselage wood should be here next week. I will start working on the fuselage while Brian works on the wing which is almost a big box of lego where all the parts just click together with a drop of glue.

For now I decided to use one of the motors I have laying around a big old Himax 6320-250Kv which should be plenty to take her up. Final power plant choice will be after I get a feeling for the CG.
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Old Jan 06, 2013, 12:12 AM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
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I think I left a few ribs at your shop....
Yes you did. I decided to leave those ribs out of the picture.
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Old Jan 06, 2013, 04:56 AM
My hangar is,... "almost" full
No Step's Avatar
United States, WA, Everett
Joined May 2003
4,041 Posts
Having never built an aft fuselage of this style before, I just built both fuselage sides off the drawings, joined them at the top with structure, and brought the bottom edges together. Bad idea. The sides became foreshortened at the bottom by about 1/8" - 3/16" and required breaking glue joints and adding balsa to bring them inline properly at bottom. Lesson learned. Suggest some sort of building device to hold everything inline properly while assembling. Yes, I felt silly

Fred,... In Bangkok
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Old Jan 06, 2013, 07:41 AM
Designing something...
United States, CA, Cameron Park
Joined Jan 2004
1,734 Posts
Fred,

Thanks! I think you've just stopped us from making the same mistake.

Here's what I'm thinking...I'll take the 2d side view of the fuselage and project it onto the 3d fuselage side. Then I'll just smash/unroll it back to a 2d. At that point all of the curves and slanted distances will be taken into account.

I've had to do this before on various curved parts before.

Brian

p.s. Mannie don't start gluing the fuselage together just yet!
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Last edited by cpdude; Jan 20, 2013 at 11:22 PM.
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