Cyrano (oz1134)

 

Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - plan thumbnail

About this Plan

Cyrano. 30in sports cabin model for .5 - .6 power, by Keith Laumer.

Quote: "What's wrong with a long nose? This pert little cabin design for small diesels and the new .049 glow engines will give hours of fun.

WHILE ON DUTY with the American Embassy at Rangoon, Keith Latimer found his model flying drastically interfered with by the lack of adequate fields of the type he was used to at home. There was a small field at the Turf Club with a concrete parking area adjacent, so he set out to design a model suitable for small-field operation; a model which would execute realistic take-offs and landings (to take full advantage of the car parking area) while limiting its range to the few acres available.

Cyrano took shape as a small, sturdy box-fuselage ship with realistic lines and simple construction. Since a floating glide was not desired, a solid landing gear, sheet balsa tail assembly and colourful paint job were included; the added weight gives Cyrano a smooth, fast glide down after a moderately steep climb under power. The first test flights showed the need for a small amount of ballast at the tail, after which the ship performed faithfully and stayed within the assigned boundaries, providing many hours of flying fun.

Complex construction has been avoided and you'll have no trouble putting Cyrano together in a few evening's work. Start by cutting out the two 1/8 in plywood bulkheads F1 and F5, the seven sheet-balsa fuselage parts. Lay out the two sides (note that cabin is built separately) and while the cement is drying, bend the in piano wire L.G. and lace it to bulkhead F5 with No. 30 linen thread. Attach the tailskid to F7 and prepare the firewall Fl for engine mounts. Join the sides on bulkhead F5 and add remaining structure. Score the cabin roof on the centre line, insert the front wing hold-down wire, then place the posts in the notches provided, with F6 and F7 fitted between them against the roof. Add the cabin assembly, tail platform, support and platform, and cowling and sand the fuselage structure preparatory to covering.

Start the wing by cutting 15 ribs W1, two each of W2, W3, W4 and W5. Build the two full-depth spars and the leading edge over the plan to establish proper dihedral angles. Cut the trailing edge from hard 3/16 balsa and bevel to cross-section shown on Rib W1. Pin the leading edge, rear spar, and trailing edge of one inboard panel to plan and add ribs..."

Update 28/07/2016: Added article, thanks to RFJ.

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Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - model pic

Datafile:

Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - pic 003.jpg
003.jpg
Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - pic 004.jpg
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Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - pic 005.jpg
005.jpg
Cyrano (oz1134) by Keith Laumer from Aeromodeller 1960 - pic 006.jpg
006.jpg

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User comments

I built one of these in the early 1960s and it flew well on Croxley Moor powered by a DC Bantam glow engine. I finished another in 2020, modified for rudder and elevator R/C and with an AS 55 diesel. The new model has a strengthened wing spar, some cross-bracing of the cabin roof and strengthening of some the fuselage joints. I also modified the outline of the tail surfaces.
Chris Baughan - 06/02/2021
Forgot to mention that the wing loading with the R/C conversion is 10.5oz/sq ft
C Baughan - 10/02/2021
Photos of the finished Cyrano [main pic, 005, 006].
Chris Baughan - 11/02/2021
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