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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).
Letter detailing modifications to a carburettor's float feed and jet to facilitate starting with poor fuel in cold weather.

Identifier  WestWitteringFiles\G\July1921\  Scan13
Date  1st July 1921
  
To HS.{Lord Ernest Hives - Chair} & OY. from R.{Sir Henry Royce}
-2-
R3/G1/7/21 Contd.

By the next mail we shall send you the modifications to the existing float feed to form the small carburettor to facilitate starting with poor fuel in cold weather. It is assumed that to get reasonable starting, fuel supplied must have at least half of its volume highly volatile. We intend that this small jet shall give a mixture up to about twice the ordinary necessary strength to obtain an explosion, so that it will allow for a mixed fuel of 50% of which may be considered truly volatile.

R.{Sir Henry Royce}

M F S22v (200 L) (2'D' 80a So-4-II') RW' Str22I'r?
  
  


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