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).
Requesting a design change for the Spectre Servo to use bolts instead of rivets on the balance arm levers.
| Identifier | ExFiles\Box 95\4\ scan0108 | |
| Date | 19th January 1935 | |
| x 341 To SY. from HDY.{William Hardy} c. Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} Ba. RHC.{R. H. Coverley - Production Engineer} HDY.{William Hardy}1/HP.19.1.35. SpectreCodename for Phantom III Servo. Will you kindly bring this into line with the Wraith servo respecting the use of bolts for the levers of the balance arm instead of rivets. The object of the change is to secure the stronger material which bolts permit (as for our standard bolts) compared with rivets. HDY.{William Hardy} | ||