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).
Specifications for a clutch spring.
Identifier | ExFiles\Box 103\1\ scan0019 | |
Date | 1st March 1933 guessed | |
Hs{Lord Ernest Hives - Chair} 935 DIA OF WIRE .212 INSIDE DIA OF HELIX .762 7 WORKING COILS WITH AN EXTRA COIL GROUND SQUARE EACH END) MAKING A TOTAL OF 9 COILS LOAD AT 2.075 TO BE 264 lbs FREE LENGTH 2.620 APPROX CLUTCH SPRING J III 6 OFF N SCH 3362 R=485 | ||