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).
List of proposed modifications to the Bentley Servo mechanism to reduce its weight.
| Identifier | ExFiles\Box 87\5\ scan0049 | |
| Date | 9th January 1935 | |
| v341 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}1/KW.9.1.35. Bentley Servo. In order to reduce the weight of the Servo mechanism we wish to try a number of modifications as specified below :- Part Modification Drive Shaft G.54653. Metal removed internally to Hs.{Lord Ernest Hives - Chair}1698. Drive Wheel G.54654. Metal removed internally to Hs.{Lord Ernest Hives - Chair}1699. Distance Piece G.54665. Made in Dural instead of Steel. Distance Piece G.54666. Made in Dural instead of Steel. Driving Disc G.52146. Altered design and made in Dural.Hs{Lord Ernest Hives - Chair}1700 Retaining Plate G.52133. Omitted. Incorporated in above Driving Disc. Damper Cylinder G.55941. Made in Magnesium Alloy instead of Aluminium. Damper Cyl. Cover G.54911. Made in Magnesium Alloy instead of Aluminium. Damper Piston G.78491. Metal removed to Hs.{Lord Ernest Hives - Chair}1701. Damper Lever GB.493. Reduced Size to Hs.{Lord Ernest Hives - Chair}1702. Damper Jaw G.78296. Reduced size to suit 0.250 pin as on Hs.{Lord Ernest Hives - Chair}1702. Bush G.78300 ) Omitted. Washer G.78301 ) Pin K.6607. Replaced by shorter 0.250 pin. Collar G.52047. Replaced by collar to suit 0.250 pin. Sp.{Mr Spinney} Pin K.4613. Replaced by smaller size. | ||