Comparing the crankshaft stiffness of a Stutz car to the 40/50 HP and 20 HP models.
| Identifier | ExFiles\Box 23\5\ Scan028 | |
| Date | 19th December 1927 | |
| X4336 To R: from Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} c. to BJ. WOY. c. to RG. {Mr Rowledge} E. {Mr Elliott - Chief Engineer} c. to DA. {Bernard Day - Chassis Design} BY. {R.W. Bailey - Chief Engineer} Hs {Lord Ernest Hives - Chair} /RM {William Robotham - Chief Engineer} 1/LG19.12.27. STUTZ CAR SHAFT. We have obtained the figures for the Stutz crankshaft stiffness. With all bearings, the shaft has a stiffness of 950 lbs.ft. per degree deflection, or is rather stiffer than we calculated. It is about 20% stiffer than the 40/50 HP. shaft and more than three times as stiff as the 20 HP. shaft, in spite of the fact that it has 8 throws to our 6. It should be observed that the Stutz shaft, having no damper, has no nose. The deflection in the damper nose of the 40/50 is 16% of that of the total shaft. The deflection in the 20 HP. nose is 11 1/2 % that of the total shaft. The deflection in the nose is of course included in the RR. shaft stiffnesses because when a damper is fitted it materially affects the period. Hs {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} | ||
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).