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 the variation of angular deflection for a Kestrel engine's reduction gear spring coupling with increasing torque.
| Identifier | ExFiles\Box 179\2\ img263 | |
| Date | 5th February 1932 | |
| TOP TITLE BOX: "KESTREL" ENGINES, REDUCTION GEAR SPRING COUPLING - D.F.S. 1335, VARIATION OF ANGULAR DEFLECTION OF VARIOUS, UNITS WITH INCREASING TORQUE MEASURED IN, DEGREES OF CRANKSHAFT MOVEMENT TOP RIGHT BOX: CURVE 284 "F" NOTE: SPRINGS E.38637 - 25% WEAKER THAN ORIGINAL SPRINGS Y-AXIS: ANGULAR DEFLECTION - CRANKSHAFT DEGREES X-AXIS: TORQUE APPLIED TO PROP SHAFT (LBS-FT) PLOT LINES: PROP SHAFT, SPRING DRIVE TO RED'N GEAR, FRONT END OF C'SHAFT STAMP: G.P. / 5-2-32 | ||