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sink-me
Sketchbook
Have you developed something new in construction, control, operation or finishing
of model craft? Send a rough sketch - we redraw it and pay $10 if accepted. Submit
original ideas; no entries can be returned.
"Crash Insurance" is purpose of idea by Maurice Taylor, Ohio city, Ohio, of reinforcing
battery boxes, radio receiver containers. Thread binding and cement coating prevents
box shattering in crash and allowing contents to further damage model interior -
Mike Ludek, Lockport, Ill., uses physics equation, wooden stick, object of known
weight (W2) and chair back as fulcrum to learn weight of model. Arrange
as sketched, shift fulcrum to balance, then measure d1 and d2.
Apply to equation W1d1 = W2d2 to learn
model's weight -
For heavy-duty installation in large radio-controlled boat, Jim Kelly, Baden,
Pa., recommends set screw adjustments in controlling torque, etc. Shaft is hinged
on transom, upper bracket joined with 4-40 Allen head screws, Set screw also 4-40
Allen h'd.
True knockdown design is particularly suited to gliders with long wings and long
tail booms. Wing tongue locks boom into fuselage pod, also holds wing panels by
friction-tight fit. Submitted by Dave Jones, Friday Harbor, Wash.
For close quarter work, George Habel, Jr., Lynchburg, Va., made extension to
soldering iron of piece of copper wire, found it ideal for radio control modeling.
In decorating plastic or other smoothly finished models, outlines of painted
areas (numerals, etc.) can be scored lightly with razor blade. Paint flows up to
scored edges, stops cleanly for neat outlining report Robert Valker, Castle A.F.B.,
Calif.
Noble Carlson, Wickliffe, Ohio, built handy soldering jig, used heavy copper
wire and alligator clips mounted to wood base. Wires are bent to hold parts in exact
alignment for soldering -
To prevent first coat of dope on silk or nylon from dripping through wing or
tail and making irregularities on opposite surfaces, Mike Obermeyer, Grand Junction,
Colo., suggests applying first coat from beneath.
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