|James Morrow, Bound Brook, N. J., solves
flap linkage problem when. dihedral angle divides flap sections.
Wire arms transmit movement of inner flap section to outer section.
Strong, trouble-free, says Jim.
to coiled fuel line "timer tank" is tip from AI White, Denver,
Colo. Air-bleed between tubing and tank, held shut by clamp,
allows time to tune engine, Opening air-bleed starts timed run.
A durable elevator hinge of monofilament line, stitched
in staggered rows to lessen chance of fraying, is contribution
of R, W. Ragen, Inglewood, Calif. Extremely strong, very flexible.
Another knack to protect heat-sensitive parts during soldering
is use of alligator clip having jaws filled with damp cotton.
Submitted by Jeff Morton, Pensacola, Fla.
|Experimental pylon engine mount designed
by Edmund Hanley, Muskegon, Mich., permits quick change from
tractor to pusher, up-down thrust trim, fast interchange of
complete engine units.
John Kilsdonk, Detroit, Mich.,
builds combat model "pod" engine mount with bolts linking L.E.
and bellcrank platform into single unit. Mounts, engine, controls
stay together, says John.
Efficient model parachute
is made of circular silk. Shrouds pass over canopy top, held
by doped Silkspan strips. Designer Art Phelps, Alexandria, Va.,
suggests long leader between shrouds and weight.
a new idea for construction, adjustment, or operation of model
planes boats or R/C? "AM" pays $10 for each "hint & kink"
used. Send rough sketch and description to Sketchbook, c/o American
Modeler, The Conde Nast Publications Inc., 420 Lexington Ave
New York 17, N. Y.