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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).
Revised specification for Engine Unit No. 21, Chassis 25-EX.

Identifier  ExFiles\Box 169\1\  img130
Date  15th September 1930
  
To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel}
C. All.
[redacted]
[redacted]

RHC{R. H. Coverley - Production Engineer}/WSCL/BE15.9.30.

ENGINE UNIT NO. 21. (CHASSIS 25-EX).

Specification of the above unit issued in RHC{R. H. Coverley - Production Engineer}/WSCL/MS11.7.30, is revised as follows:-

Passed to Test 12.9.30.

Crankcase & Bearings to LOP. E.79019.
Crankcase to Clutch Casing Breather to LeC 2809 - Scheme 1333.

Valves & Fittings to LOP. E.78569.
E.70442 Valve Springs replacing E.80240.

Carburetter to LOP. E.80530
Incorporating LeC 2803 - Modn. to Air Chamber & Silencer, gauze rings fitted to air intake.
E.8126B Air Intake base scheme to prevent oil being drawn up the crankcase breather into the carburetter.

Water Pump to LOP. E.79093.
Casing E.80997(replaces E.80557) Scheme 1311.
Pump Spindle E.79269 Nitroalloy.

Water Connections to LOP. E.78995.
Delivery Bend E.80996(replaces E.80559) Scheme 1311.

Controls to LOP. E.80671
Inclined Shaft Controls to Scheme 1311.
Carburetter Controls to conform to LeC 2803.
Instrument Board Controls to N.S.3103.
D.{John DeLooze - Company Secretary} Scheme 416.

continued.
  
  


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