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).
Instruction memo to the Technical Committee outlining a theory on the cause of howling side shafts.
| Identifier | ExFiles\Box 75\1\ scan0002 | |
| Date | 19th December 1911 | |
| R.R. 300 (6 B) (W. 159. 24.1.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 103rd Meeting Z 522 510 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Technical Committee Order No. Customer's No. Re: Howling Side shafts Thinking it improbable that the intermediate are consistently noisier in themselves than other gears we manufacture. I have endeavoured to find local conditions in the gear box which would accentuate their faults. The following Theory explains all the facts known to me and has the merit that it can easily be tested: The sound is closely related to the engine speed. Signed This Sheet must be filed on completion of the work. | ||