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).
Graph charting the average coefficient of friction and temperature of Ferodo bonded asbestos lining over one hour.

Identifier  ExFiles\Box 32\2\  Scan075
Date  8th May 1925 guessed
  
AVERAGE CO-EFFICIENT OF FRICTION OF
FERODO BONDED ASBESTOS LINING.
SPEED & WORK CONSTANT WITH THE TEMPERATURE
RISE FROM 70° TO 525° FAH. IN ONE HOUR.

Left Y-Axis: VALUE OF μ.
Right Y-Axis: DEGS. FAHR.
Bottom X-Axis: TIME MINS.

Line Labels:
TEMPERATURE F°
VALUE OF μ

Test Parameters:
PERIPHERAL SPEED OF DRUM 1000 FT / MIN.
WORK DONE.
1 H.P. HOUR PER SQ. IN. LINING.

Handwritten text (bottom center): F/Ches/7
Handwritten text (bottom right): 169
  
  


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