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).
Diagram of the Hispano clutch operating mechanism and associated force calculations.
| Identifier | ExFiles\Box 180\M4\M4.2\ img001 | |
| Date | 7th February 1924 guessed | |
| HISPANO CLUTCH DIAG OF OPERATING MECHANISM. TOTAL PRESS. ON FRICTION DISC = 437 X 5.5 = 2403 lbs AREA OF FRICTION DISC O/SIDE DIA'S = 13.44 MEAN DIA = 10.22 AREA = 54.8 ☐" PRESS ON FR. DISC = 2403/54.8 = ~40 lbs / ☐" FOOT PRESS. REQ.D TO JUST RELEASE CLUTCH = (437 x 1.98 x 1.34) / (10 x 4.325 x 1.16) = 23 lbs. (P/P) ACTUAL PRESS. USED, ABOUT 40 lbs. Diagram Labels: 437 lbs. TO BUT RELEASE CLUTCH SLIP RING ROTATION FRICTION DISC +0.75E 10" 1.98" 4.325" | ||