Dassault Falcon 20 (oz16644)
About this Plan
Dassault Falcon 20. Free flight scale model for EDF (or rubber) power.
Direct submission to Outerzone.
Quote: "DASSAULT FALCON 20 BIZJET
36” SPAN
DRAWN 10 JUN 2024
FOR EDF OR RUBBER POWER
I fell in love with this jet when I first saw it in person at the Long Beach Airport in FEDEX livery. A sleek jet with good looks and after doing some research was found to be a high performance jet. Of course the FEDEX livery really sets this jet off! I’ve never built a complete EDF (Electric Ducted Fan) model and the EDF’s shown are probably too small for 36” span. I kept the rubber power in the back of my mind with a clear prop on the nose.
CONSTRUCTION:
WING: The wing is built using the Dave Rees’ style sliced rib construction. You’ll want to check out Mike Stuart’s Free Flight Models site for a tutorial on building in this style: https://www.ffscale.co.uk/rees.htm
FUSELAGE: The fuselage is built using a ladder jig. The formers are made of 3 laminations of 1/32”x1/16” strips around the former patterns. You can use 1/16” balsa sheet or foam board to make the patterns for the laminations. Be sure to wax the edges good so the laminations will release when dry. When you add the stringers to the formers be sure to alternate sides with each stringers to keep the tension even on each side. Many years ago I participated in a Koutny cookup on HPA. Mr. Koutny is a Master modeler from Poland. He uses 1/32”x1/16” stringers glued on the 1/32” edge sticking up 1/16”. This makes a nice round fuselage without the flat sections between the 1/16” sq stringers a bit further apart. Start adding the stringers in the middle of the fuselage because as the fuselage taper to the nose and tail the stringers will become closer than 1/8” .
EMPENNAGE: The horizontal stab is made with 3/32” sq and sheet balsa. 3/32” sq L.E. and 3/32”x1/4” sanded to 1/16” T.E. The Vertical stab is made using 3/32” sheet L.E., cap and 1/16” x1/8” T.E. built flat on building board. Use scrap 1/32” balsa to lift the T.E. for gluing to the cap. Once dry add the vertical spar of 1/16” sheet triangular shaped balsa to the cap with super glue “in the air” and complete build “in the air” adding 1/32”x1/8” ribs over the spar gluing to the L.E. and T.E."
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ScaleType: This (oz16644) is a scale plan. Where possible we link scale plans to Wikipedia, using a text string called ScaleType.
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User comments
Is the center of gravity placed correct? Considering the swept-back wing it seems to be placed way too much forward.Hans - 20/03/2026
My friend Ivan Taylor has built many big FF DF jets and he has found they need a CG much further forward than expected.
bill dennis - 20/03/2026
Hans try running the dimensions through this page and see what it comes up with.
https://rcplanes.online/cg_calc.htm
Pedr - 22/03/2026
Thanks, Pedr! ...I just did that with these numbers(mm): A=196.5, B=74, S=248, Y=381, AA=126, BB=67, SS=131, YY=212, D=406. Static Margin=10%. Outcome: from wingroot LE to CG=176.2mm. That places the CG just after the main landing gear.
Hans - 23/03/2026
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- Dassault Falcon 20 (oz16644)
- Plan File Filesize: 189KB Filename: Dassault_Falcon_20_oz16644.pdf
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Scaling
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