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).
Secret memorandum discussing 'SS' car and aero engine mounting designs.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan056 | |
| Date | 23th January 1929 | |
| E.{Mr Elliott - Chief Engineer} RG.{Mr Rowledge} (Struck through) FROM R.{Sir Henry Royce} SECRET. R1/M23.1.29. HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} (Struck through) (At Le CanadelHenry Royce's French residence.) REC'D AT WW. 28.1.29. C. to BJ. WOR.{Arthur Wormald - General Works Manager} SG.{Arthur F. Sidgreaves - MD} (Struck through) PN.{Mr Northey} GWB. (Struck through) Mr. CLAREMONT (Struck through) Handwritten: X7005, X7380 'SS{S. Smith}' CAR ENGINE MOUNTING (& PERHAPS AERO ENGINE DITTO.) Probably we have settled down to requiring the engine to increase the rigidity of the front end of the frame, and nothing else will do it, so that the degree of flexibility in the mounting is limited to that given by a large area of rubber not exceeding a quarter of an inch in thickness. I cannot find a better way in dealing with such a mounting than that I have already sent to Mr. Elliott for him to apply if dimensions allow. There is nothing quite the same being used by anyone. I mean the scheme of holding the inner angle rigidly by the six bolts and ferrules, and allowing the middle angle carrying the engine to move slightly between the other two angles. Such an improvement may be patentable. Will Mr. Elliott send Mr. Claremont a copy of my sketch or a better one. It is understood that such a mounting will prevent the engine torque or over-running vibrations building up into a period. Perhaps the only improvements on the above would be six arms which might restrain both ends more effectively - i.e. greater spread of arms might allow of greater flexibility. R.{Sir Henry Royce} | ||