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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).
Issues with fitting independent air vent pipes to chassis 20-MY and GRW-32, causing difficulty in filling the petrol tanks.

Identifier  ExFiles\Box 18\4\  Scan072
Date  1st September 1933
  
S/W.
Hs.{Lord Ernest Hives - Chair}..from PN.{Mr Northey}
Copy to Wor.{Arthur Wormald - General Works Manager}
C. Mx.{John H Maddocks - Chief Proving Officer} HP.

X7960

PN.{Mr Northey}1/WTS.9.33.

Independent Air Vent Pipes
fitted to Chassis 20-MY and
GRW-32.

RC.{R. Childs} reports as follows :-

"The above were fitted to both chassis to prevent
petrol fumes from entering the coachwork.

In the case of GRW-32, it was difficult to fill
tank with petrol from the pump, owing to
continual air locking. When the tank was completely
full there were signs of syphoning. The pipe has
been removed and tank is standard now.

The tank of 20-MY is very difficult to fill especially
the last three or four gallons, owing to air locks.
I have had a note from Fraser saying it takes three
or four minutes to put this amount in, as it has to
go in slowly, otherwise it overflows over the top of
the filler. No report from him regarding syphoning.

It would appear that the copper piping is too small,
as when the job was fitted the pipe was carried in an
upward position, above its seating on the tank".

I shall be glad to have your remarks
or further suggestions please.

LID{A. J. Lidsey}

PN.{Mr Northey}

See me
HS{Lord Ernest Hives - Chair}
  
  


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