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 plotting revolutions per minute against time in hours for an unfinished Vee Belt test, noting adjustments and component failures.
| Identifier | ExFiles\Box 135\1\ scan0237 | |
| Date | 2nd November 1938 | |
| VEE BELT TEST - DAYTON COY. REVS PER MIN HOURS H.P. Sheaves 36 Min. (2nd Test) * Fan Broken C G & Co Fan returned to Rolls Royce in exchange for new fan Used for 2 hours. 24 Mins Stop for night New Fan Max. adjustment Vee adjusted Stop for night PULLEY ANGLE - 33°-56' BELT PERIPHERY- EXTERNAL: 42 1/2" INTERNAL: 38 7/8" TEST UNFINISHED 6 HOURS-45 MINS. * FAN BROKEN DIAGRAM N° 884 | ||