New-York tribune., 1909-01-01
W4TERtAND AIR AND THE
VALI7E OF EACH.
Charles E. Daryea Says Both Are
Satisfactoryand Mach Depends
on Purchasers Choice.
By CHARLES z. DURYEA
Technical Expert of American Motor Cars Manrfact.
Association.

Ever since the first little tricycles, OF foreign
manufacture car1a into this country. with their
small air cooled motors, which grew red enough 20
seen IN dark the air cooled has been
fighting way iT=o a permanent place in ths
minds of American buyers Makers have, n
rule. largely favored water cooling, because IN thu
hands OF careless or .ninteEigent users there was
little danger Of the mQto- being OVerheated- Water
has great capacity for absorbing the heat. and no
become hot burn away the Iub-fcatin-
only boil and gets hotter than z12 whereas an
air cooled may BY uEfavorable handling
matter how much heat is gersrated the water can
oil and do possible damage TO t.e piston ard
cylinders.
Such unfavorable, results are due il they occur
70 faulty handling, but wiz blame himself
in this event. and on this account large proportion
of automobile makers still continue the OF the
water cooled form The show OK automobiles at
the Grand CeTaTaI Palace presents number OF
amples Of air cooling. but tine majority by long
odds are of the water cooled variety These max
ers, while denying the caQabity OF the air
cooling method, and while adTuitUing the force o3
the argument that their radiators and fans for
the purpose OF ultimately delivering the excess
heat to the air. continue this thoroughly proven
method becaues of the success OF the past with IL
and the hold il has with the average American
buyer While the motor buggies almost without
exception use air cooling. the larger vehicles and
touring cars almost equally unanimous in tho
use of water
One manufacturer for several years back has
built both styles wth'eqJraI Success clearly demon
y.
the water-oooled venicLa the majority secure CIR
culation by form OF pump. although others
use natural circulation in all OF their
models. The advantage of the natural circulation
is that the pump is omitted the slight power
oured to DIVE the pump h saved, its inpossibls
noise and troibIs eliminated and the first cost
of the vehicle, Vell its probable maintenance
expense may be IO%Fer, other things being equal
With natural circulation the water heated BY ths
cylinders rises and passes the radiator. where
being cooled IL falls the bottom and again re-
Turns to- the cylinders This action does not begin
until the cylinders warm. and is slow or fast, ac-
cording 20 the heat OF the cylinders. thus being
largely self-ragulating and thermostauc- Undouot-
edly it contributes slightly greater economy as
well as 70 increased simplicity
The advocates Of the pump methods OF etrc1la-
tfo1 claim quite nuthfuIly that more rapid cir
c,11ation IS maintained which permits smaller
mining and smaller radiators, as well as tnsurins
greater certainty from boiling OF the water, WITH
some loss thereof fror the radiator II tneTerore
bacornas largely a maner of choice TO the pUyer
vrbetber or not he pnafers the Possloiltles o.
trouble with the pump and its requirement. OF
mower or whether more e equenty 20 replenlSl th'
water supply carried MS vehicle Inis TOO. -
the situation with regard 10 air or Nater-cooleu-
II has been thoroughly demonstrated time anu
again that both are satisfactory. and the metno4
1.e1v 70 survive will depend on the attitude o. thS
purchaser of the future