The sun., 1918-09-29
AIRPLANE ENGINES :,
FOR MOTOR CAR USE
Expert DISCUSSES Interestingly
the Possibility Of Using
Rejuvenated Air Motors.
BY FRANK r. TENNEY,
Principal West side Y. Nj. &. A.
school for Airplene Me-

chantcs, N. Y. city.
Your Uncle Samuel may become one
OF the largest dealers in engines for
automobiles the world ever has heard
OF. II he decides to turn over for re-
juvenation the tens Of thousands OF
airplane engines which have outiived
their usefulness for flying. Already
there are many thousands OF used en-
sines accumulated at every hying heid
In this country and at all OF the AVA
ton bases. Not all OF the airplane en-
gInes shipped to France are demolished
In the course OF war Reading the
papers one might be led TO believe that.
sooner or later, all airplanes are
sma ed beyond repair or drop within
enemy lines. But far the greater num-
Der are retired because they are no
longer effective.
When one is told that the average life
Of an airolane engine Is 100 hours II
is startling, People who are prone 70
find fault because that endless stream
OF Liberty planes Is not ~winging across
the Atlantic will please take note OF this
fact Even were there no other OBJ
stacle. the fact is that the trip would
take one-third or more OF the life or
the engine before II reached she night
ina line. The prolonged strain OF a trip
of this kind might fur'her shorten 'he
life or the motor
But the fact that an engine is ho
longer OF value in flying machine
does not signify that it has no useful
ness for other purposes. In fact. this
may be the sole source OF supply vi
auto engines for some time 10 co'ns
at least until the war ID over ne
question naturally arises "nether tne
sirpiane engine Is snitaoie LOT au'o
propulsion. wen, IL was ho' oeslsheo
for that purpose, ana IN some respec's
the ideals OF the two engines are us-
metricAIly opposed, out IL - not o"'y
, feasible to put used aero motor IN an
auto, but II ALREADY IL oeins cone
Here are some OF the ouerehces De
tween the two motors which weish TOT
and against the Substitution. me ae:o
engine Is made very nght-Nst AS isnt
as they dare make ehem. anu they arc
balanced to nicely. Lasntness ~ es-
sential. as Will be appreciated, Out 'he
balancing eliminates much OF the Siora-
tion experiences WIN 'ho au'o hio.o'
The latter rests upon STURDY steer
frame riveted nrmiy tosether ana sus-
pended on the SPRINGS ana throush these
| and rubber tires on the ground Inc
eSiO aASNOt
fragile-bed. supported by struts ana
wires TO wings which rest upon the ar
Just as the auto motor was better
balanced than the stationary gas en-
CINE, which was mounted on a soma
base, so the aero motor must De hghter
land more finely balanced than the auto
motor. Again, there Is more care ex-
ercised In building the aero motor IL
must be perfect. because ITS needs must
be more reliable The driver cannot
get out on cloud to doctor up the aero
motor as the chauffeur gets out ana
under when there Is engine trouble. l
have heard OF aviators climbing up 10
| the engine to see what the trouble was.
but doubt the truth OF the story. En-
CINE trouble means get to earth-if pos
sible. safely-you get there anyway
/ mentioned the fact OF the ngater
construction and the finer workman
ship. The fact is that the factor OF
safety IL lowered almost to the vanish
ing point, but the scientific construction
offsets this The auto engine Is not de-
signed with reference to a safety table
II is not necessary.
The aero motor is likewise much