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 showing performance variation graphs and data for a Delco Damper.

Identifier  ExFiles\Box 28\1\  Scan214
Date  9th January 1931 guessed
  
SHEET VI
VARIATION IN PERFORMANCE WITH SPEED DELCO DAMPER

TOP GRAPH & TABLE:
154 LBS/sq in OIL PRESS.
BALL PIN
VEL | MAX. PRESS | M.E.P.
.75 | 33 | 29.4 | A
1.08 | 38.4 | 33 | B
1.50 | 52.5 | 43.8 | C
Graph lines labelled: .75 FT/SEC A, 1.08 FT/SEC B, 1.5 FT/SEC C
VALVES G4 2G.
4" BALL PIN STROKE

BOTTOM GRAPH & TABLE:
462 LBS/sq in OIL PRESS.
BALL PIN
| MAX. PRESS | M.E.P.
VEL
A .75 | 308 | 215
B 1.08 | 420 | 300
C 1.50 | 495 | 360
Graph lines labelled: .75 FT/SEC A, 1.08 FT/SEC B, 1.50 FT/SEC C
VALVE 2G. G4
4" BALL PIN STROKE

TESTS TAKEN WITH 7.5" LEVER. THE VALVES 2G. G4. BEING RECOMMENDED FOR THE FRONT OF AMERICAN PI CARS.
  
  


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