The San Francisco call. [volume] (San Francisco [Calif.]) 1895-1913, 1910-02-16
AUTOS CLASSIFIED
AT GOTHAM SHOWS
Engine Dimensions and Horse
power Figured to Nicely
for Each Style
By R. r. L.HoMMEp1Eu

York automobile shows are very in
teresting. Especially so those which
deal with horsepower and motor de-
mansions. The calculations were based
on the rules of the American automo-
bile association.
The contest rules OF this organiza-
ton. as approved by the Manufacturers
automobile association. agree upon the
different divisions. cars being CLASH
fled according to the prices of the
machines, and this, according TO the
rules, has resulted in four classes,
namely. $4,000, s2,5o0, $500 and $1,000
Under these rules the $4,000 car has
a horsepower of 42.2, with a Al inch
bore and a stroke of 81 inches,
for the tours and skies, gives a piston
displacement of 424.7 cubic inches,
which is equal to four cylinder motor
of IA inch bore by inch stroke. or
a six cylinder motor of ~ inch bore
by inch stroke.
The $4,000 car would have a for
mula rating of ESQ horsepower and
a motor of IL inch bore by Is stroke
The $1,000 car yields a net 27.S horse
power and a cylinder dimension of AZ
inches in the bore and As in the stroke
The $1,000 car averag es 3.35 inch in
bore and As inch in stroke. with a
rating of 32.5 in horsepower. This
would allow for piston displacement
of 1888 inches.
The development of these figures
shows that the four cylinder motor en-
tirely prevails in the last three classes,
and that the average motor is shade
over 40 inches for the bore and Al
inches for the stroke. with a piston
displacement of 235 cubic inches and
an a. l.. A. NJ. rating of 26.3 horse
power In arriving at the average
motor design, there is first considered
the fact that the two lower priced
schedules without exception have the
valves all on one side. With this in
mind, for every 100 cars there would
be 50 of that construction, Is with the
valves on opposite sides, with valves
in the head, and the remaining would
be two cycle motors. These would be
cast as separate cylinders for ~ cars.
in pairs for q cars, an en- bloc for 20
cars.
These 100 motors would drive through
90 three speed selective gear sets. IL
four speed of the same type, q plane
tary two speed and 5 progressive three
speed gear sets. The final drive would
be through 50 propeller shafts and
two sets of side chains. The chassis
would average Ill inches for its wheel
base, with front tires 81 inches by =
inches and rear tires 81 inches by
inches.
Sales of the Studeba r-Garford cars
in San Francisco are reaching the hign
8. water mark OF last
Rig sale, of fall. according TO
studebakers John sAI Il; - ,b bas sn,
tomobiIe depart
ment of the local Studebaker branch.
There's constant shifting OF scenery
at the local showroon1s, due TO the fact
that the big machines with their little
cousins, the Studebaker electrics, are
continually moving in and out--in with
the arrival of new cars from the fac
tory and out as the sales progress An
other carload of the big touring cars
arrived yesterday and are now on dis
play.
That performances which prove reli-
ability. speed and consistency are fac
tors in populariz-
Chalmers Liked ing and selling au-
In Portland c cGIHfDnys D May Sot 70
the Chalmers motor
company by the receipt of the follow
ing telegram, dated February 1, from
sold SO Chalmers cars during Port
land auto show. Chalmers won 5000
cup for most popular car in show. Re-
cefved more votes than all other makes
combined. H. L. Keats Auto Company"
Portland was the scene of Bert Ding
leys great victory in a Chalmers 30
when he won the Wemme trophy in the
annual rose festival road race.
In this race Dingley drove 10S miles
in 104 minutes and won the race by 16
seconds breaking all speed records for
the course on the final lap. During the
same meet the Chalmers 80" was en-
tered against a number of more power
full machines, and while Ii did not win
the race made the entire distance with
out a stop. That these performances
were remembered by Portland automo-
bile buyers is proved by the message
from the Chalmers dealer there.