Waco SRE oz3358


Waco SRE - plan thumbnail image

Waco SRE - completed model photo

This plan was found online 21/09/2012 at: http://www.theplanpage.com/esp.htm
Outerzone planID: oz3358 | Filesize: 224KB | Format: • PDFbitmap | Credit*: gthunter


About this Plan

Waco SRE - Rubber scale model biplane.

Quote: "One of the Most Realistic and Finest Flying Scale Models Ever Designed - A Replica of a Famous Plane. Waco SRE, by Earl Stahl.

WACO planes are known throughout the world for their fine performance, stamina and distinctive appearance. Newest member of the Waco family of planes is the model 'E', a five passenger biplane which is rapidly attaining a full measure of popularity on the skyways of the nation.

Featured in its design is a radical new engine cowling which is an integral part of the fuselage. This eliminates the usual break between the cowling and body and adds to the plane's beauty and performance. A small flap at the bottom of the cowl permits the pilot to maintain any desired engine temperature.

The Waco 'E' is available powered with several engines of varying power. The Jacobs engine of 330 horse-power affords a cruising speed of 177 mph and a rate of climb of 1,170 ft per min. Fuel stored in synthetic rubber fuel tanks is sufficient for a non-stop flight of 1,100 miles. Electrically operated flaps are employed to slow the speed of landings.

Structurally and proportionally the Waco 'E' is an excellent design for a flying scale model. The original proved to be a fine performer; it takes to the air in steep, thrilling spirals and makes flights of over 50 seconds. This model can really 'take it' too, for the biplane type of construction is very rugged. Since the size is rather small, it is important that the weight of the various parts be kept at a minimum. The manner of construction is entirely conventional, so little difficulty should be experienced as your Waco takes form.

Fuselage. A simple rectangular frame is the backbone of the fuselage structure; it is shown lightly shaded on the plan. Work directly over tracings of the plan and build two side frames, one over the other to make certain that they are identical. Medium grade wood should be used; the longerons are 3/32 square and the uprights are 1/16 x 3/32. Stick pins on both sides of the longerons and crosspieces to hold them in place until the cement is dry.

Separate the frames with a thin razor blade, should they stick together, then invert them over the top view. Cement 1/16 x 3/32 crosspieces into position at the center of the body and when dry draw the backs together and place the remaining cross-pieces. It will be necessary to crack the longerons in order that they can be pulled into position at the front. Check continually to assure a correctly aligned structure. Because of the rather simple structure of the prototype, few fuselage formers are required..."

Update 08/08/2018: Added article, thanks to GTHunter.


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oz3358 datafile

Waco SRE  
by Earl Stahl
from Model Airplane News
July 1940 
21in span
Tags: Scale Rubber F/F Biplane Cabin Civil
all formers complete :)



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User comments

The photo of the completed model was found here - http://nasascale.wordpress.com/2012/02/11/waco-sre-2/ - and is by Mike Welshans who says quote: "My Waco SRE is built from Earl Stahl plans. Span is 21 inches. The weight is 47 grams. Prop is a carved 8 inch free wheeler. The model is for either AMA Rubber Scale or FAC Rubber Scale."
SteveWMD - 21/09/2012
Added 3 super pics of the finished model, thanks to MikeKelly [004-006].
Mary - 07/08/2018
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