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).
Table comparing engine characteristics such as Stiffness, Inertia, and Critical Speed across different configurations.
| Identifier | ExFiles\Box 85\5\ scan0018 | |
| Date | 15th August 1932 guessed | |
| Table Data: Column Headers: - PEREGRINE - BENSPORT - 3 1/2" STROKE, 2 3/8" JOURNALS, 2" PINS - 3 1/2" STROKE, 2 1/4" JOURNALS, 1 3/4" PINS - 3 3/4" STROKE, 2 3/8" JOURNALS, 2" PINS - 3 3/4" STROKE, 2 1/4" JOURNALS, 1 3/4" PINS - 3 7/8" STROKE, 2 1/4" JOURNALS, 2" PINS - 4" STROKE, 2 1/4" JOURNALS, 2" PINS - 4" STROKE, 2 3/8" JOURNALS, 2" PINS Row 1 - References: - E.100043 (under PEREGRINE) - LEC. 3097 (under BENSPORT) Row 2 - STIFFNESS (LBS-FT/RADIAN): - 34500 - 43000 - 56500 - 46500 - 54000 - 45000 - 50000 - 48000 - 52000 Row 3 - INERTIA ([PEREGRINE = 1 UNIT]): - 1.00 - 1.05 - .91 - .81 - .99 - .90 - 1.05 - 1.10 - 1.10 Row 4 - CRITICAL SPEED (WITHOUT DAMPER HUB.): - 5400 - 5300 - 7300 - 6800 - 6700 - 6500 - 6300 - 6100 - 6300 | ||