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).
Design of the 'SS' crankshaft, noting disappointing results in torsional rigidity and the need for reinforced webs.
| Identifier | ExFiles\Box 125\2\ scan0045 | |
| Date | 3rd June 1929 | |
| To PF from Sg.{Arthur F. Sidgreaves - MD} Copy to Hs.{Lord Ernest Hives - Chair} re Chrysler Crankshaft. Referring to Hs{Lord Ernest Hives - Chair}/Tsnl/LG28.5.29, I have a note on this subject from PN{Mr Northey} in which he says: 'that although the intention apparently is that the design of the "SS{S. Smith}" crankshaft shall provide for altogether greater torsional rigidity than in the case of the late standard "Phantom" crankshaft, the results in this respect are disappointing. It is, I think, important to be assured that the actual SS.{S. Smith} crankshaft which will go, or is going into production will have the advantage of sufficiently reinforced webs to give the first batch of SS.{S. Smith} engines the best chance of being satisfactory. So much trouble of the periodic vibration type and torque reaction depends upon the design of the crankshaft in this respect.' I should be glad to have your comments in regard to this from the point of view of crankshafts for the first batch of "SS{S. Smith}" production. Sg.{Arthur F. Sidgreaves - MD} | ||