Donald (oz1139)

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Donald (oz1139) by Brian Peckham 1956 - plan thumbnail

About this Plan

Donald. Free flight gas sport cabin model, with twin rudders, for .75cc engines.

Quote: "A sports model for .75cc engines. This sports job is the ideal transition model for anyone progressing from rubber or glider designs to their first power model.

Flying: The model should balance at a point 5/8in forward of the rear spar. Test glide: this should be slow and flat; if not add packing as necessary, but not ballast. The prop I recommend is a Frog 6x4 nylon. With power at about half revs, and trim tab 3-6 deg. to port, launch gently into wind, not fast as it is fairly slow flying. This trim should produce a gentle left turn under power and glide.

Construction: Fuselage. Cut the fuselage sides from medium hard 1/16 sheet; former 1 from 3/16 hard balsa, formers F2, F3, F4, from medium hard 1/8 sheet, and F5, F6, F7 and F8 from medium 3/32 sheet. Join the fuselage sides with F3 and F4, and when dry add rest of formers, working towards rear, leaving F1 until last. Bend undercarriage from 14 g. piano wire and bind to ply former F3B, then sandwich between F3 and the - balsa former F3A. Cement engine bearers in position..."

Update 22/06/2011: Thanks to aldee who pointed this out, I have resized this plan to correct wingspan 38in span. It seems the plan was printed in the magazine with the span mistakenly quoted as 26in. The larger span now tallies with the 1in TE strip drawn on the wing.

Supplementary file notes

Planfile includes article.

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Donald (oz1139) by Brian Peckham 1956 - model pic

Datafile:

Donald (oz1139) by Brian Peckham 1956 - pic 001.jpg
001.jpg
Donald (oz1139) by Brian Peckham 1956 - pic 003.jpg
003.jpg

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User comments

Unfortunately the span and length were reversed as the Donald is actually much larger. Best Regards
aldee - 22/06/2012
I inherited one of these with an ED 0.46 built by Chief Tech Paddy Spiers at RAF Gaydon in the early 60’s. It flew beautifully (as did all his models). I often wondered about this plan being credited to SAC Peckham. Brian Peckham was well known for his model aircraft designs. Was Brian Peckham ever in the Royal Air Force as SAC was a rank in the RAF (Senior Air Craftsman)? Were Brian Peckham and SAC Peckham the same person?
ChrisP - 05/06/2013
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* Credit field

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Scaling

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