Beta Magic (oz13003)

 

Beta Magic  (oz13003) by Matthias Moeller 2019 - plan thumbnail

About this Plan

Beta Magic. Radio control sailplane model. Wingspan 2.4m.

The original Graupner Beta (oz7557) dates back to 1977, and was an RC sailplane at 78 in wingspan. This here is a modern plan, drawn up from scratch in CAD, showing an enlarged version of the Beta at 120% size with 2.4 m wingspan.

Direct submission to Outerzone.

Quote: "Dear Steve, a friend and flying mate, Ingo was always dreaming of rebuilding his 1st kit which was a Beta from Graupner. I started to help him and designed the Beta magic which is 120% of the original 2,4m instead of 2m. (Normally the magic has 125% but the wood parts fit better in this 1:1,2 scale.) A laser cut kit was made, just a handful for some friends. The aerodynamics of the old vintage original were bad, but it was good looking plane in that days. So the original profile was exchanged to a Selig Donovan and as the original had issues with a heavy tail, the planes stabilizer was changed from flat to profile. This leads to a CG at 45-50% at the wing, helps to save trim lead in the nose. The plane became a f-tow coupling and can be easily flown with a light electric plane in front.

So the result was a good looking plane as the original one but with much better flying characteristic. On slight conditions at our local hill it stays up and in light thermals it goes up. I included a FPV shoulder-exchange so you can also fly it from the googles. Thanks to Ingo for giving the impulse to build this beauty and special greetings to him at this place to get his plane finished soon. Cheers Matthias"

Some links to video:

Maiden: https://www.youtube.com/watch?v=IlMZXjbwMK8

Bad conditions at the hill: https://www.youtube.com/watch?v=PCo9V31hVmU

F-Schlepp: https://www.youtube.com/watch?v=5E1_sqQjwz8

Rudderways: https://www.youtube.com/watch?v=Jm7sHC1nY9A

Michaels maiden: https://www.youtube.com/watch?v=vmCDaE2AiW0

Note the main planfile here is a single PDF file with 9 sheets. This serves as a quick overview. For a more detailed (itemised) view, see the supplement file "named_sheets.zip" for the same plan, but here each plan sheet has a title of material and size. Then of course there is the full CAD file download in DXF format. Steve.

Supplementary file notes

Named sheets zip.
Photo pack zip.

CAD file

This plan is available for download in CAD format.

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Beta Magic  (oz13003) by Matthias Moeller 2019 - model pic

Datafile:
  • (oz13003)
    Beta Magic
    by Matthias Moeller
    2019 
    94in span
    Glider R/C
    clean :)
    all formers complete :)
  • Submitted: 27/04/2021
    Filesize: 525KB
    Format: • PDFvector • CADfile
    Credit*: MatthiasMoeller
    Downloads: 1585

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User comments

Well done Matthias.. Great work great plane..
Murat - 04/05/2021
Thanks ;-) Hope you will build one and give feedback.
Matthias Moeller - 05/05/2021
Hello, i've been looking at the plans and it seems that the trailing edge is missing; also the wing ribs are drawn without the trailing edge in section. Is it possible to have a wing section detail similar to what was presented in the original Graupner plan, showing the leading and trailing edge, the spars, how much of the wing is covered in ply sheet, etc? Many thanks, Eduard.
rautchi eduard - 03/02/2022
To Rauti Eduard: You do not need a trailing egde. The trailing edge is formed by the ribs, the bottom sheeting is to be sanded into a sharp triangle from the end of the ribs to the end of the trailing edge. By sheeting the wing top, you will get the trailing edge. Greetings,
Reinhard Lehmann - 04/02/2022
To rautchi eduard! Sorry about the spelling of your name ! A trailing edge like this can be seen on Graupner`s Trend 35 plan and Graupner`s Clou - plan....The advantage is: The balsa used to sheet the wing is a lot cheeper than a "ready to use Trailing edge" and is more stable.
Reinhard Lehmann - 04/02/2022
Hello, love the design and thanks for publishing the CAD files. This will be the first design to go on my new laser cutter. Is the clear canopy a commercial item or did you mould it yourself ?
Roger - 11/04/2023
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Download File(s):
  • Beta Magic (oz13003)
  • Plan File Filesize: 525KB Filename: Beta_Magic_oz13003.pdf
  • Supplement Filesize: 551KB Filename: Beta_Magic_oz13003_named_sheets.zip
  • Supplement Filesize: 3317KB Filename: Beta_Magic_oz13003_photo_pack.zip
  • CAD Zip Filesize: 360KB Filename: Beta_Magic_oz13003_cad.zip
  • help with downloads
 

Notes

* Credit field

The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.

Scaling

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