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).
Blueprint bar chart tracking engine faults and remedies over several months in 1939.

Identifier  ExFiles\Box 131\3\  scan0090
Date  30th June 1939
  
1939 JAN FEB MARCH APRIL MAY JUNE

ENGINE THROTTLE STICKING DUE TO RETURN SPRING STRETCHING DISTORTION OF THROTTLE BODY GUMMINESS
A - NEW SPRINGS
B - LUBRICATED
C - DISTORTED
D - SHORT LINK FITTED

Data on chart from left to right:
JAN: Bar sections labelled 1B, 3C, 13A. Total count 17.
FEB: Bar sections labelled B, C, A, A.{Mr Adams} Annotation below: W301.
MARCH: Bar sections labelled A, C, C, A.{Mr Adams} Annotation below: A W328. Two counts of 7 marked.
APRIL: Bar sections labelled C, A.{Mr Adams}
MAY: Bar sections labelled D, A, C.
JUNE: Note: MODIFIED SPRING ANCHORAGE AND NEW SPRING IS BEING FITTED.

NOISY VALVES GEAR DUE TO WORN TAPPETS ROLLERS AND PINS
Data on chart from left to right:
MARCH: Bar with count of 6.
Note: 21000 MILES, APRIL 28507 MILES.

HEAVY OIL CONSUMPTION
A
B LOSS OF OIL PRESSURE WHEN CORNERING
Note: L SECTION RING FITTED.
Data on chart from left to right:
FEB: Bar with sections B, K, K, K, K.{Mr Kilner} Annotations: P169, P181, P159, W316.
MARCH: Bar with sections B, K, A.{Mr Adams} Annotations: 7, W316, W320.
APRIL: Bar with sections A, K.{Mr Kilner} Annotations: P199, P200, W336.

POOR PERFORMANCE IRREGULAR SLOW RUNNING
Note: VALVE SEATS DISTORTED M.R. SERIES.
Data on chart from left to right:
FEB: Bar with section K.{Mr Kilner} Annotation below: W301.
MARCH: Bar with section K.{Mr Kilner} Annotations: 4, P189.

EXHAUST MANIFOLD STUDS BROKEN
Data on chart from left to right:
MARCH: Bar with count of 4.
APRIL: Annotation on bar: CRACKED MANIFOLD.

Bottom Right Corner: GWH{George W. Hancock - Head Chateauroux}3
  
  


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