Avro 504K (oz947)


Avro 504K (oz947) by Ray Malmstrom 1967 - plan thumbnail

About this Plan

Avro 504K. Rubber scale 2-seater biplane model.

Quote: "ALL DEDICATED aeromodellers know that every once in a while they build a model that has just that extra bit of appeal, that additional thrill some of their other models do not possess. The rubber-powered Avro 504K (full-size plans on following pages) proved to be just such a model. Test flying this little biplane and seeing it airborne silhouetted against the evening sky recalled a day when the author watched the real Avro 504K, G-EBYW of Aviation Tours Ltd, at an air display in the early 1930's giving air-minded enthusiasts their aerial baptism.

Begin by constructing two basic fuselage sides from 3/32 sq in strip, and 3/32 in sheet, join with 3/32 sq in cross members. Add the 1/16 in sheet formers, and finally the 3/32 sq in and 1/16 sq in stringers. Check at each stage for accuracy of construction. Firmly cement in place the pieces holding the rear dowel peg, and sheet piece taking the tail-skid wire. Before adding the thin card front decking bend the 20 s.w.g. wire centre section front and rear struts. Cement these accurately to the inside of the nose sheeting where indicated. The paper strut fairings can now be added. Reinforce strut attachments with silk or linen tape ieces. Add the tail-skid unit.

Fill in the underneath of the nose with 3/32 in sheet. Build engine cowling from laminated sheet, sanding carefully to shape. Cement front formers M and N to fuselage, and complete by assembling engine cowling complete with dummy cylinders to former M. Before covering, sandpaper completed fuselage, rearwards of the dowel peg. Keep rear of fuselage as light as possible. Fit 1/16 in sheet pieces A between formers E, F, G (see front view on plan). Cover with lightweight tissue leaving slot at rear of fuselage for front of tailplane. Watershrink the tissue and give one coat of clear dope..."

Update 26/03/2018: added article (publication unknown), thanks to RFJ.

Update 29/03/2018: re-scaled this plan to correct full size at 18in wingspan, thanks to anon. Have re-aligned the stiched sections too.

Supplementary file notes

Previous scan version.


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Avro 504K (oz947) by Ray Malmstrom 1967 - model pic


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User comments

Measured wingspan is 7.5 inches. Measured plan sheet is 12 x 5 inches.
anon - 29/03/2018
You're right. Fixing this one now.
SteveWMD - 29/03/2018
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