Galahad (oz5551)


Galahad (oz5551) by Frank Knowles from Mercury, Aeromodeller 1960 - plan thumbnail

About this Plan

Mercury Galahad. Radio control sport model. This is a modern CAD-redrawn plan. Mercury Models 'Galahad' RC model. Wingspan 54in, wing area 475 sq in, designed for 1.5 to 2.5cc engines.

Quote: "Steve; please find attached a copy of the Mercury Galahad, which I don't think you have on your OUTERZONE web site as yet. The [small, low res] scan is of a page from an Aeromodeller annual which I have traced and enlarged to the appropriate size using AUTOCAD. I attach all files for your use as you see fit."

Direct submission to Outerzone.

Update 22/07/2016: "Instructions for Building and Flying" added, thanks to DeeBee1.

Supplementary file notes


CAD file

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Galahad (oz5551) by Frank Knowles from Mercury, Aeromodeller 1960 - model pic

  • (oz5551)
    by Frank Knowles
    from Mercury, Aeromodeller
    54in span
    IC R/C LowWing
    all formers complete :)
  • Submitted: 02/05/2014
    Filesize: 320KB
    Format: • PDFvector • CADfile
    Credit*: MarkWinstanley

Galahad (oz5551) by Frank Knowles from Mercury, Aeromodeller 1960 - pic 003.jpg
Galahad (oz5551) by Frank Knowles from Mercury, Aeromodeller 1960 - pic 004.jpg
Galahad (oz5551) by Frank Knowles from Mercury, Aeromodeller 1960 - pic 005.jpg

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User comments

See the RCLibrary page at for free download of the complete book 'Radio Control Big Four' from 1964, which contains 13 pages of text and photos detailing building and flying the Mercury Galahad, written by Frank Knowles himself. Includes radio installation, also full details on how to add an aileron wing.
SteveWMD - 24/11/2015
Added a couple of nice pics of the finished model, thanks to George Slocombe [model photo & more pics 006].
Mary - 18/10/2019
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Download File(s):
  • Galahad (oz5551)
  • Plan File Filesize: 320KB Filename: Galahad_54in_oz5551.pdf
  • Supplement Filesize: 642KB Filename: Galahad_54in_oz5551_instructions.pdf
  • CAD Zip Filesize: 28KB Filename:
  • help with downloads


* 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.


This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.


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