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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).
Series of graphs showing vibration test results on chassis B.56.BN under different configurations.

Identifier  ExFiles\Box 90\5\  scan0075
Date  10th March 1935
  
VIBRATION TESTS ON CHASSIS B.56.BN{W.O. Bentley / Mr Barrington}
VERTICAL SCALE REPRESENTS AMPLITUDE
FULL LINES SHOW HORIZONTAL LATERAL VIBRATION.
DOTTED LINES SHOW VERTICAL VIBRATION.
STANDARD CAR WITH BUMPER BAR
DITTO WITHOUT BUMPER BAR
WITH BUMPER BAR AND "ONE PIECE WINGS"
WITHOUT BUMPER BAR WITH "ONE PIECE WINGS"
WITH BUMPER BAR AND "O.P.W." SCUTTLE AND SOLID DASH
WITHOUT BUMPER WITH "O.P.W" WITH RIGID SCUTTLE
FRONT FACE OF FRONT WING
STEERING BOX FILLER CAP.
SCREEN PILLAR
CENTRE OF STEERING WHEEL
FRONT OF RUNNING BOARD
TOP FRONT FACE OF DASH
FRONT FACE OF REAR WING
BACK FACE OF BOOT
FREQUENCY OF EXCITATION. CYCLES/MIN.
DESC
ASC
O.{Mr Oldham} VERT.
HORIZ
Exptl 14/9/35.
H.S. 2121.
  
  


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