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Fox model airplane engines
had a reputation for ruggedness and contest-winning performance, but were also notoriously
difficult to get started - at least without an electric starter. In 1961, when this
full-page advertisement appeared in American Modeler magazine, electric
starters were not in many modelers' field boxes, and particularly those owned by
youngsters whose modeling budget came from meager allowances and paper routes. Born
in 1958, I was 15 or 16 years old before being able to afford the luxury, and I
remember relentlessly flipping the propellers on my
Fox 15 and
Fox 35 control line
engines. Half the time when they started, they were running backwards and had to
be stopped with a rag thrown into the prop, then the process started over again.
Ugh. ...but I digress. Fox prided itself on their use of
Meehanite iron
for the piston. Per Wikipedia: "Meehanite is a trademark for an engineering process
to make a range of cast irons produced under specific and carefully controlled conditions
to precise internationally recognized specifications. According to the Meehanite
Worldwide company, when correctly followed the Meehanite process will produce cast
iron with uniform soundness, consistent physical and mechanical properties and dependable
performance in service." I don't know what the difference is between the standard
Fox engines and the "X" series. My Fox 15 and Fox 35, which I still have, are the standard non-X variety.
Fox 15x Engine Ad
 Watch for the Sensational New Fox 15x
In 15 Size, All Features of the Record-Holding Fox 29x ... For the past 3 years
holder of every major speed record against all comers.
Fantastically Priced at Only 6.95
Easy Starting • Powerful • Steady Running • Long Life • Time-Tested
Design • Up to 30 Thousand RPM • Finest Materials and Workmanship •
Guaranteed
The Fox 15x Will Feature: Regular Fox one-piece crankcase design. Leaded steel
cylinder liner, slip fitted in case, satin honed bore. Fully machined Meehanite
piston, micro-ground and hand lapped. Hardened steel crankshaft. full 3/8 dia. main,
ground crankpin, splined thrust washer. Bronze bearing scientifically oil-grooved
and micro-honed. Scientifically shaped Swirl-Quench combustion chamber, plug tilted
to fit head. Hold-down screw ribs to eliminate cylinder distortion. Blowout-proof
.010 aluminum head gasket. Guaranteed by Duke Fox.
Bore .590 * Stroke .540 * Disp. .15 * Weight 4 oz. * Power up to .5 Hp * No load
RPM 32,000 * Racing RPM 28,000 * Stunt RPM ,15.000
Fox Manufacturing Company, Inc.• Fort Smith, Arkansas
Controline Flyers - You will be the center of attention with your smooth, steady
running Fox 15x. Free Flighters - The powerful Fox 15x will rocket your model so
high that you can't miss a max. Speed Flyers - A smaller edition of the famous 29x;
boosts the some winning design.
RC Flyers - Watch for the RC version of this bomb soon!
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