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).
Development of an improved and silent 4-speed car change speed gear.
| Identifier | ExFiles\Box 15\5\ Scan104 | |
| Date | 13th January 1930 | |
| X7310 Da{Bernard Day - Chassis Design}/Hdy.{William Hardy} } FROM R.{Sir Henry Royce} E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} } (At Le CanadelHenry Royce's French residence) R8/M13.1.30. c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} CAR CHANGE SPEED GEAR X.523 X.7310 X.5310. X.4510 I have asked Mr.Hardy to see if he can come here for one week clear, because I have for some time had a feeling that this year will see some good move on better change gears. I do not think it is done yet, and we would like to be in it. I have a 4 speed gear that should prove easy to make silent, and with the help of the Salerni coupling in its simplest form it ought to be easy to change. R.{Sir Henry Royce} | ||