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).
Confirmation memo regarding the servo disc-type damper, detailing the use of a full-depth lock nut and a lengthened bolt for the Phantom III, 20/25, and Bentley models.
| Identifier | ExFiles\Box 95\4\ scan0123 | |
| Date | 29th January 1936 | |
| +341 GRY{Shadwell Grylls} C. . No. Des.TWD.{T. W. D???Aeith}bg/fm. (crossed out) EY/TWD{T. W. D???Aeith} (crossed out) E/HDY.{William Hardy}1/HP.29.1.36. Servo.- Phantom III. 20/25 and Bentley. This is to confirm that as discussed with EY/TWD{T. W. D???Aeith} the nut which loads up the spring for the disc type damper is to be locked in position by a lock nut which should, however, be of full depth. The bolt is to be lengthened accordingly. E/HDY.{William Hardy} | ||