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Specification sheet for the S.U. Carburetter Type H.4 with an automatic starting device.


Identifier  ExFiles\Box 99\1\  scan0044
Date  19th April 1939
  
BY. {R.W. Bailey - Chief Engineer} DA. {Bernard Day - Chassis Design}
Rm. {William Robotham - Chief Engineer} (struck through)
Rm {William Robotham - Chief Engineer} /CES. (struck through)
BY {R.W. Bailey - Chief Engineer} /GS. (struck through)
Rm {William Robotham - Chief Engineer} /GR. {George Ratcliffe} (struck through)

408. BY {R.W. Bailey - Chief Engineer} /NS. {Norman Scott} 10/G.19.4.39.

B.5. S.U. CARBURETTER. RR.SPECIFICATION NO.B.5/3.

S.U. SPECIFICATION NO. 403.

AUTOMATIC STARTING DEVICE

CARBURETTER TYPE H.4.
Mounting offside No.3266. Die Cast Body with thickened flange and steel throttle spindle bushes, cast in. 1.500 diameter throttle.
No.3347 Throttle Spindle - Brass.
Copper Asbestos Joint washers.

FLOAT CHAMBER.
Front Carb: T2 1208-1161 on R.H. with .100 needle seat on both lids. R.R. supply their own banjo. .1867 fixing nut & 1557 washer fitted.
Pt.Nos.1558 and 1559 Tickler Pins and Collars fitted on both lids.
EW.1249 Banjo Float Chamber Drain. *
Rear Carb: 3258 - 1161 Thermo.Float Ch. on R.H. Needle 3134 to have .008" taper & Suction disc 3129 to be .435" dia, Fit standard spring (green). Supply two 199 stops loose. Supply two single 695 banjos and 698 bolts.
EW.1249 Banjo Float Chamber Drain. *

Main Air Vent.
Horizontal hole to be plugged.
Vertical hole to be drilled (see drawing No.3256).

Throttle opens - Down.

JET CONTROL.
.090 Adjustable Jets as Assembly No.54.
Needle B.3.D.

* Fitted by R.R.

BY {R.W. Bailey - Chief Engineer} /NS. {Norman Scott}
  
  
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).


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