Firefly (oz3397)


Firefly (oz3397) from Frog 1950 - plan thumbnail

About this Plan

Frog Firefly. Free flight sports biplane power model.

Quote: "The fuselage was two moulded half-shells, with brown paper on the inside of the balsa. Would have to decide between moulding over a former, or plotting some bulkheads and planking. It lends itself to a colour scheme from the US navy of the 1930s. I haven't decided on the mods to cope with the lack of kit parts yet."

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Firefly (oz3397) from Frog 1950 - model pic

  • (oz3397)
    from Frog (ref:671-KP)
    36in span
    IC F/F Biplane
    formers incomplete :(
  • Submitted: 25/09/2012
    Filesize: 962KB
    Format: • PDFbitmap
    Credit*: rayfairfield

Firefly (oz3397) from Frog 1950 - pic 003.jpg
Firefly (oz3397) from Frog 1950 - pic 004.jpg

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User comments

If you plan to keep the gallery going here is a photo of a Frog Firefly built from your drawings [more pics 003]. Keep up the good work, I really appreciate your efforts.
BobP - 25/04/2016
Nice work - I always thought I'd like to build this myself, but was never sure how to make the fuselage.
SteveWMD - 25/04/2016
Fuselage is similar to Frog 'Fox' in that it was originally 2 half shells. I got round this by making octagonal formers, and using 3/16th softish balsa to make the vertical sides, and the top and bottom. This was then sanded flush with the formers before adding the diagonals of 1/8th balsa. It was then 'just' a sanding job to get everything nice and round. I covered mine in tissue. It looks like a baseball bat, is just as strong but a whole lot lighter. It was great fun and I haven't broken it yet. Hope this helps.
Chas - 13/06/2016
Managed to pick one of these kits up yesterday, seems complete with assembly plan?
Bernie - 27/08/2019
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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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