Los Angeles herald., 1910-01-16

of design. The $500 motor has a rating
of 32.7; it's bore is All inches, it's stroke
4S9, and it has d piston displacement
of 314.5 cubic inches. Here one notes
little stronger tendency toward the
long stroke, the stroke averaging 20
inch more than the bore. In this class
there is a perceptible increase i'll the
siX-cylinder type, although the four
holds the upper hand, constituting as
it does S4 per cent, leaving l. per cent
for the siX-cylinder and 4 per cent
for three cylinders. Once more we are
compelled to record victory for the
L type of cylinder, with Sc per cent,
and exactly double that of the T-head.
There is an increase in the ValVe-in-
the-head type, which shows per cent.
A feature in this car is the two-cycle
motor, which constitutes per cent OF
the total. There is reversal in this
class as compared with the $1,000 and
$500 motor in the casting of cylinders.
We now have reached the stage IN
which the casting in pairs is far in the
ascendency, whereas up to this point
the separately-cast cylinder led. Now,
however, 76 per cent of the $500 car
has cylinders cast in pairs. twenty
four per cent of them has the separate
castings, and there is not single eX-
ample of the en- bloc variety.
We have now reached the $4,000 car,
and its motor differs widely in many
respects from the motor of the $1,000,
$500 or $2500 class In the $4,000 car it
is a four-cylinder versus siX-cylinder
light, with 60 per cent of the followers
pushing the four along and the amaz-
ingly high percentage of 40 per cent
pinning it's faith in the six. 1t is only
after one carefully analyzeS the dlt-
ferent makers of sizes throughout the
country that the number manufactur-
s,, o,v,,vrobordad order
that no misunderstanding may arise it
is well to state that of the total num-
ber of motors used this year in this
class 40 per cent will not be siX-cyl-
inder ones, but the fact remains that
40 per cent of the builders in this cate~
CORY manufacture six-cylinder cars.
What is the average $4,000 motor or
the motor in the $4,000 car? 1t has 5l
horsepower A. L. A. NJ; it has bore
of 4.S2 inches; it has a stroke of 5.l5
inches; and it has a piston dlsplace-
ment of 44S.2 cubic inches. Briefly, this
motor is a disciple of the long stroke,
the stroke being roughly speaking, 1-3-
inch longer than the bore. This is not
quite up to the 2-5 in the $25OO class.
Before passing to other phases of the
motor situation for 1910 brief sum-
ming up of the tendencies of construc-
ton, as eXemplified in these Tour
classes or cars, may De interesting 10
begin: All four favor the long-stroke
motor, with the $2500 class the leader.
In the first three classes the L-type OF
cylinder predominates, but in the $4,000
class the T-head is victor. The valve
in-the-head type has rather uncertain
career, vacillating from Is per cent IN
the $1,000 class to per cent in the $500
class. to per cent in the S25OO class
and 20 per cent in the $4,000 class. Sepa-
ratelv cast cylinders are in the ma
jority of the first two classes, and
casting in pairs largely predominates
in the two bigger categories. Thermo-
syphoning is in inverse prooprtion to
the price, controlling as it does in the
first two but surrendering to the pump
in the second two. Double ignition
systems practically break even with
dual systems in the $2500 and $4,000
classes; dual predominates in the $500
and single in the $1,000