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 comparing critical atmospheric temperature for spring-tensioned versus positively tensioned fan belts at 62 MPH.
Identifier | ExFiles\Box 14\7\ Scan023 | |
Date | 2nd July 1930 guessed | |
GRAPH V.{VIENNA} 19 E.X. 62 M.P.H. NO BONNET VENTILATION COMPARISON OF SPRING TENSIONED FAN AND FAN BELT TENSIONED POSITIVELY. CRITICAL ATS TEMP 10°C 20°C 30°C 40°C SPRING TENSIONED 40.5 BELT TIGHTENED Choc à Bloc 44.5 | ||