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Creativity and ingenuity was needed
more often by aircraft modelers back when various aspects of the hobby were in the
development stages and access to a prefabricated device was not as ready as today. If
you need a special-purpose product or method nowadays, a Google search will usually
turn up a solution in the form of an off-the-shelf item and/or instructions on how to
do it yourself - sometimes even with a video to show you how to do it. In the middle
of the last century, if you wanted a component or gizmo other than common things like
wheels, propellers, and bell cranks, you had to make them yourself from on-hand
materials or do without. I often am amazed at the ideas presented in these Sketch
Book installments. Check out the device designed by Mr. Mustafa K. Artam, of
Istanbul, Turkey, for checking relative thrust of carved free flight propeller
blades. This month's entries also come from Bristol, England, and Victoria,
Australia.
Sketchbook
 Have you developed something new in construction,
control, or flying that might interest other modelers?
Send a rough sketch - we'll redraw it and pay $5 for each one accepted. Sorry, we
cannot acknowledge or send back submissions.
 Improvements on spring-type clothes pin make
it triple-acting modelers' clamp ... Glenn Graham, Los Gatos, California.
 C.H. Beiger, Chicago, Illinois, devised slotted dorsal
fin for guide and "stop" of dethermalizer ... made of plywood or balsa sheets.
 This useful soldering torch is hard to beat for
light work reports Ivan Ortiz, New York, N.Y.
 Trimming covering tissue, says Ward Morris, Brevard,
N.C., is more easily done with emery board than razor blade.
 Mustafa K. Artam, Istanbul, Turkey, devised
simple apparatus for checking relative thrust of propeller blades.
 Clever device by Ernie Shailor, Detroit, Michigan,
permits easy external winding of radio model's escapement rubber motor. No dismantling
or winder necessary.
 Rubber model prop-folding improvements by George
Woolls, Bristol, England, assure flush folding, durability and increased efficiency -
(Conventional tensioner)
 Australian Norman Bell, Victoria, submits simple
idea to pressurize racing engines via hollow rear crankcase cover screw ... (Does not
affect rotor)
Posted June 30, 2018
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