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).
Comparing Cadillac and Packard engine components and discussing crankshaft balance.
| Identifier | ExFiles\Box 173\4\ img166 | |
| Date | 16th December 1935 guessed | |
| particularly when run up light under which condition the torque is weakest & has none of the periods inherent in a SpectreCodename for Phantom III. The overhauled V8 is and rather Our job not bad when the flanged nose shafting. On the Cadillac Viz the comment period is limited inherently & also a lower period is detectable by holding the gear lever. There was not much vice in in the road & for the Packard not felt altho its Shafts were very free and on this chassis apparently due to the massive crankshaft. Packards were certain to Zaphyr a rough reason in direction of reactions and crankshaft is not up to the high compressions attainment. Cadillac maintain that it is from broken oil delivery to 6 throw crankshafts that cause bad torque groans & reason large clearances. Their V8 2 1/2" journal with no or ordinary Albion oiling had at No 6 2 1/2" Crossdrilles clearances This peculiarity is 7 thou replaced by Eric Wolds Researches into dynamic balance. The photo deflection curves of a 6 throw crank were subjected a rough edge at the axis and loaded from at hours 1 & 6 then 2 & 5 and 3 & 4 giving results (Diagram with numbers 24 and 4.6) He then calculated the amount of balance weights required | ||