Rolls-Royce Archives
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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).
Specification table detailing the dimensions for jet needles for a downdraught carburetter.

Identifier  ExFiles\Box 13\3\  03-page297
Date  13th March 1931 guessed
  
DOWNDRAUGHT CARBURETTER.

Dimensions for Jet Needles Required.

Dia. Large End Taper.
.148
.148
.148
.153
.153
.153

Dia. Small End Taper.
.093
.098
.103
.093
.098
.103

Included Angle of Taper for these dimensions.
3º - 8'
2º - 52'
2º - 34'
3º - 26'
3º - 8'
2º - 52'

1 off each. Other dimensions see E.81797.
  
  


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