The Logan Republican. [volume] (Logan, Utah) 1902-1924, 1912-07-11
At End Of Test.

But note. For the one hundred anc
thirty-two hours-from 500 a. m.
March 18th. to 900 p. m, March goth
these two motors watched day J.
night by committee OF experts). raj
steadily, smoothly and sweetly. Ever,
minute of the test they developed
more than the 30 per cent excess pow
er specified by the rules.
At the end of this period the en-
gines were put back into the cars ar
quickly driven cross country to II
famous Brooklands track, with double
relays of drivers, covering 500 miles
a day. Still the engines had no,
missed shot"
The required 1000 miles were com
pleted at an average speed of AZ miles
per hour. Then the cars we're driven
back to the testing room again and
the engines put back on the rack for
a final test of five hours.
Marvellous to relate, the power de.
veloped at the second test was greater
than at the first, seemingly an impos.
sibility, and never heard of before in
the worlds history Of automobile man.
ufacture. The SO h. p. motor devel.
oped 81 horse power, three horse pow.
er more than during the original one
hundred and thirty-two hours run.
while the % h. p. motor developed
, nearly two horse power more than at
the beginning.
Is 1t any wonder that no poppet
valve manufacturer is willing to sub
nit his motor to such a test? No
Tor IL is physically impossible for any
ordinary Cor poppet valve) motor to
make such a showing. And right
here is the secret Of this wonderful
engine-its power steadily increases
while in use.
But to return to the test. At the
finish the engines were taken to piec-
res and the wearing parts subjected to
, most searching examination by the
official club experts in charge of the
test We quote below brief extracts
from the official Royal Automobile
club report:
mo perceptible wear was noticeable
on any Of the fitted surfaces"
The cylinders and pistons were
found to be notably clean" (That is,
free from carbon.)
THE ports of the valves showed no
burning or wear"
The storm of criticism was stilled.
The test demanded by rival manufac.
turers proved the worst boomerang in
England's automobile history. The vim
dication of the Knight sleeve valve
motor was as complete as the test It
self
What The Test Amounted To.
Think what this test amounted to /.
In the duration Of it the motors re
ceived harder treatment than would
have been given them in two years
of ordinary service. Five and one
half days at 120O-14OO revolutions per
minute, and under load all the time!
Yet-"No perceptible wear was motto,
able"
Almost ten million revolutions
the crank shaft of the larger motor,
and over eleven million of the smaller
while running on the testing rack
1000 miles each on the BrookIands
track Ga total consumption altogether
of 1883 gallons of gasoline) yet "the
cylinders and pistons were found to be
notably clean"
Over 30 per cent excess power de-
veloped all during the engine test
the average specified speed exceeded
while on the Brooklands track-yet.
The ports of the valves showed no
burning or wear"
After all, is not the word marvel
GUS" justified in the description Of
such a test?
There then you have the story! The
genius of a great inventor-Knight-
has been combined with the genius OF
great manufacturer-Stear
produce the Stearns.Knight, the type
of car destined to become the stan
dard of high grade motor car practice.
Is 1t any wonder that Mr.. Thatcher
feels a pride in acting as the agent
of such a car? II you question the