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 design changes for a servo, specifically regarding the external ratchet, swivel plates, and adjustment mechanism.
| Identifier | ExFiles\Box 73\1\ scan0133 | |
| Date | 29th March 1924 guessed | |
| X.9910 X9910 To DA.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} ST.{Capt. P. R. Strong} HS{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} c. to CJ. RG.{Mr Rowledge} BY.{R.W. Bailey - Chief Engineer} S E C R E T. R1/M27324 E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. SERVO. X.9910. It will be understood that we do not now need the servo with external ratchet. We are not making the servo with swivel plates until we find this is really required. We ought to require an adjustment through the frame. Better not to make this so convenient as to be continually changed. I am hoping and expecting this adjustment only to need attention every 20,000 miles. Apparently the adjusting nut cannot be unscrewed without some special tackle. Perhaps this is good when necessary. The whole servo might be taken down and out. R.{Sir Henry Royce} | ||