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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Investigation into the cause of 'sea-sickness' in covered cars, identifying exhaust fumes as the culprit.

Identifier  ExFiles\Box 74\3\  scan0134
Date  15th November 1921
  
c. to [REDACTED]
c. to [REDACTED]
c. to [REDACTED]
c. to Hs.{Lord Ernest Hives - Chair}

[STAMP: RECEIVED]
[STAMP: SB{Mr Bull/Mr Bannister} - SICKNESS]
[STAMP: X3908]

[HANDWRITTEN: X3908]

LES/S/315.11.21.

From investigations made by Mr. and R.C. we have come
to the conclusion that in some instances the so-called "sea-sickness"
in Rolls-Royce Covered Cars is [handwritten addition: is] caused by the entrance of exhaust
gases and oil fumes into the body of car; the bouncing and
swaying of the car being the apparent cause, only. The suction
effect of division window and roof ventilator may account for this
as well as the bellows action of certain cushions with holes in
underside and in seatboards. Before condemning the road springs
on a car in which "sea-sickness" is experienced we should suggest
that it is made certain that floorboards and seatboards are
airtight. For this purpose sheet rubber, oil-cloth or other
suitable materials may be fitted over holes and cracks in floors
and seatboards.

Will you please note and take necessary action in
cases of complaints, where we think this to be the likely cause
of the trouble.

L.H.S.{Lord Herbert Scott - Chair}
  
  


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