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).
Experiment to use a standard ball bearing for the Spectre Servo.
| Identifier | ExFiles\Box 95\4\ scan0105 | |
| Date | 19th December 1934 | |
| X341 To BY.{R.W. Bailey - Chief Engineer} Copy to Wor.{Arthur Wormald - General Works Manager} E.{Mr Elliott - Chief Engineer} Hs.{Lord Ernest Hives - Chair} Ds. DMO. HDY.{William Hardy}2/MN.19/12/34. SPECTRECodename for Phantom III SERVO. We wish to try a ball bearing of standard type between the worm wheel shaft and the servo as experiments indicate that provided the bearing is quite free on the servo spindle there is no need for any special endwise freedom in the bearing. Will you kindly instruct accordingly. HDY.{William Hardy} | ||