Envoy (oz3250)


Envoy (oz3250) by Cyril Shaw from Aeromodeller 1952 - plan thumbnail

About this Plan

Envoy. Free flight power cabin model for .5 to 1.5 engines.

Quote: "An easy-to-build 40 inch wingspan cabin power model for .5 to 1.5 cc. Envoy, by Cyril Shaw.

Cyril Shaw's Envoy is not new. It first appeared as a kit early in 1950, and a number of these kits were circulated by Shaw's of Norbury, London. Now, Cyril has emigrated to Canada and the kit is no longer in production.

So attractive are the lines of this high wing tricycle design that we feel the demand for full size plans should not be neglected. All the printed parts, formers and ribs are now shown full size on the drawing, and slight modifications here and there have enabled us to present the Envoy in the popular APS series.

First test flown over Epsom Downs in cold windy weather, the prototype flew 'straight off the board' with a steep power climb and impressive glide. Using an ED Bee diesel for power, the flying speed is fast, but because of the inherent stability, is also very safe.

Large enough to accommodate any of the latest 1.5 diesels, and yet still not too large for the .5 cc Dart, we know that the Envoy will continue to be one of the most popular sport designs in the country.

Construction. The fuselage is a simple box construction of 1/8 x 1/8 in and 1/8 in sheet balsa. Join the fuselage halves by formers 1, 2, 3, and rear ply U/C former, after the undercarriage has been sewn on to the latter. Join fuselage at rear..."

Update 31/08/2012: Replaced this plan with a cleaner and better version thanks to pd1.

Update 22/05/2018: added article from Model Flyer February 2012 on how to convert the Envoy, thanks to RFJ.

Supplementary file notes

Planfile includes article.
PDFvector plan tracing, by hogal.
Conversion article.

CAD file

This plan is available for download in CAD format.


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Envoy (oz3250) by Cyril Shaw from Aeromodeller 1952 - model pic


Envoy (oz3250) by Cyril Shaw from Aeromodeller 1952 - pic 001.jpg
Envoy (oz3250) by Cyril Shaw from Aeromodeller 1952 - pic CAD_plan_by_hogal.jpg

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User comments

What a pretty and simple design, excellent for a relaxed build and winter is round the corner! Looking at the supplement, I'm still hoping for Hogal to write up the third part of hist tutorial, from raster to CAD... Please? ;)
ZaRodinu - 31/08/2012
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Download File(s):
  • Envoy (oz3250)
  • Plan File Filesize: 373KB Filename: Envoy_pd1_oz3250.pdf
  • Supplement Filesize: 2410KB Filename: Envoy_pd1_oz3250_article_conversion.pdf
  • Supplement Filesize: 122KB Filename: Envoy_pd1_oz3250_vector_hogal.pdf
  • CAD Zip Filesize: 306KB Filename: Envoy_pd1_oz3250_cad.zip
  • help with downloads


* Credit field

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