American Gyro AG-4 Crusader (oz907)


American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - plan thumbnail

About this Plan

American Gyro AG-4 Crusader. Rubber powered scale model of the unorthodox 1935 twin-boom streamlined plane. WIngspan 24 in.

Update 4/4/2022: Replaced this plan with a clearer copy, scanned from fullsize, thanks to dfritzke.

Quote: "American Gyro Crusader. Published Model Aircraft Builder, June 1936. Original plan by Jones. Scale 11/16 = 1ft. Span 24 in. Redrawn and corrected 4-82 by Dick Gleason."

Direct submission to Outerzone.

Update 4/3/2023: Added article, thanks to JeffGreen.

Quote: "The accompanying drawings are for a model with a span of 2 in and dimensions given in coresponding scale. Increasing all dimensions by one-half will produce a very good fling model of 36 in span, which will out-perfom the smaller ship in every way. Limited space does not permit printing plans of a model this size, full scale.

A careful study of present model contruction has proved that constructing fuslages in halves ( a left half and a right half) is not only the most accurate method but also the easiest and strongest. Therefore, the 'teardrop' fuselage of the Crusader should be constructed by cutting left and right formers F-1 to F- from 1/32 sheet balsa according to patterns K-1 and K-2..."

Supplementary file notes

Previous scan version.


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American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - model pic


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American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - pic 003.jpg
American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - pic 004.jpg
American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - pic 005.jpg
American Gyro AG-4 Crusader (oz907) by George Bendix 1936 - pic 006.jpg

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User comments

Hello Steve, I'm currently building an enlarged 36in rc version of the Crusader at Wattflyer: The plan is not 100% accurate, as there are some discrepancies between views, and the fuse former ears which create the wing farings do not place the wing at the correct location on the fuse, as the wing TE is located above the fuse bottom. Still, it is certainly a workable plan for creating the fuse and providing a good starting point. I have attached a photo of the main fuse, before the modifications began. Feel free to add it to the Crusader plan, as it will at least provide some photo of the construction.
Bill_G - 14/01/2013
Photo of his completed model now added, thanks to Bill_G.
SteveWMD - 20/02/2013
Dick [unclear] is undoubtedly Dick Gleason (deceased) of Austin, MN, USA.
Dave Fritzke - 07/04/2022
Got it, fixed now. Many thanks :)
SteveWMD - 07/04/2022
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Download File(s):
  • American Gyro AG-4 Crusader (oz907)
  • Plan File Filesize: 1440KB Filename: Crusader_oz907_.pdf
  • Supplement Filesize: 1498KB Filename: Crusader_oz907_article.pdf
  • Supplement Filesize: 169KB Filename: Crusader_oz907_previous.pdf
  • help with downloads


* Credit field

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