Legion Air 100 (oz12804)


Legion Air 100 (oz12804) by Cecil Haga 1975 - plan thumbnail

About this Plan

Legion Air 100. Radio control sailplane model. Wingspan 100 in. Wing area 933 sq in.

Revised CAD version by Alan Sinclair, 2021.

Direct submission to Outerzone.

Update 13/02/2021: Added kit review from RCM, February 1977, thanks to RFJ.

Quote: "RCM Product Test: Legionair Sailplanes Legionair 100.

The Legionair 100, designed by Cecil Haga and manufactured by Legionair Sailplanes, 3017 Norwood, Arlington, Texas 76013, is available direct from the manufacturer and retail outlets with a suggested retail price of $74.95. It is a Standard Class competition sailplane which is also excellent for general sport flyilng. With a wingspan of 100 in, it has a total wing area of 933 square inches and utilizes a flat bottom airfoil.

The center panels of the wings are constant chord with swept tips. The Legionair 100 is designed for 3 channels operating rudder, elevator, and landing spoilers as well as a releasable tow hook.

The basic materials used in the construction include fiberglass and metal tubes in the fuselage, a metal tube spar with balsa and plywood utilized in the wing, and conventional balsa tail surfaces. The releasable tow hook is included in the kit.

The plan size is 24 x 50 in and there are two sheets with building instructions included on the plan sheets in addition to a ten page instruction manual. Parts are both die-cut and shaped.

Unusual features of the kit include a metal tail boom and metal wing spars, a fiberglass pod, huge and very effective spoilers, a four piece wing and bolt-on tail, as well as unusually comprehensive flight instructions included in the construction manual. In addition, the wing is designed for interchangeability with the Legionaire 140.

Our prototype, ready to fly, weighed 46.5 ounces for a wing loading of 7.1 ounces per square foot. Our flying surfaces were covered with MonoKote and an EK-logictrol three channel radio was used. With regard to the kit, we find that it is a fine, comprehensive, and beautifully detailed kit, but one where the builder must pay careful attention to alignment details and follow the instructions to the letter.

With regards to the flight performance we must say that the Legionair 100 undoubtedly ranks as one of the best all around Standard Class sailplanes we have flown to date."

Update 25/3/2022: Added kit instructions, thanks to Harlan Cleveland.

Supplementary file notes


CAD file

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Legion Air 100 (oz12804) by Cecil Haga 1975 - model pic

  • (oz12804)
    Legion Air 100
    by Cecil Haga
    from Legion Air (ref:L100)
    October 1975 
    100in span
    Glider R/C Kit
    clean :)
    all formers complete :)
  • Submitted: 03/02/2021
    Filesize: 798KB
    Format: • PDFvector • CADfile
    Credit*: AlanSinclair
    Downloads: 1239

Legion Air 100 (oz12804) by Cecil Haga 1975 - pic 003.jpg
Legion Air 100 (oz12804) by Cecil Haga 1975 - pic 004.jpg

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User comments

Master Sinclair wields a sharp mouse!
Miguel - 14/02/2021
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Download File(s):
  • Legion Air 100 (oz12804)
  • Plan File Filesize: 798KB Filename: LegionAir_100_oz12804.pdf
  • Supplement Filesize: 3083KB Filename: LegionAir_100_oz12804_instructions.pdf
  • Supplement Filesize: 898KB Filename: LegionAir_100_oz12804_review_RCM.pdf
  • CAD Zip Filesize: 333KB Filename: LegionAir_100_oz12804_cad.zip
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