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 showing servo efficiency curves for various material and mechanical configurations.

Identifier  ExFiles\Box 16\3\  Scan073
Date  20th June 1929 guessed
  
SERVO EFFICIENCY CURVES (S.S.)
SPRING BALANCES FOR ASCERTAINING
LOADS 'A' & 'B' RIGGED
UP AS SHOWN ON V535.
LOAD OUTPUT 'B' (LBS)
LOAD INPUT 'A' (LBS.)
CURVE 1
CURVE 2
CURVE 3
CURVE 4
CURVE 5
CURVE 6
CURVE 7
CURVE N°1. 45° CAMS: OIL SOAKED "COTTON A" FABRIC.
CURVE N°2. 45° CAMS: DRY "COTTON A" FABRIC.
CURVE N°3. 45° CAMS: DRY "COTTON A" FABRIC: POLISHED DRIVING PINS & BUSHES.
CURVE N°4. 30° CAMS: DRY "COTTON A" FABRIC: POLISHED DRIVING PINS & BUSHES.
CURVE N°5. 30° CAMS: OIL SOAKED "COTTON A" FABRIC: POLISHED PINS & BUSHES.
CURVE N°6. 45° BALL-BEARING CAMS: OIL-SOAKED FABRIC: POLISHED PINS & BUSHES.
CURVE N°7. 45° CAMS (PLAIN): OIL SOAKED "COTTON A" FABRIC: POLISHED PINS & BUSHES.
  
  


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