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).
Modifications to the Spectre Steering Gears due to excessive clearance in the rockshaft pin.
| Identifier | ExFiles\Box 95\1\ scan0184 | |
| Date | 9th July 1935 | |
| X350 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}11/KW.9.7.35. SpectreCodename for Phantom III Steering Gears. It has been found that, owing to excessive clearance allowed on the drawings, the pin which supports the roller follower on the rockshaft is a very slack fit in the rockshaft. Modified drawings are being sent through by BY's Dept., which increase the size of the hole in the rockshaft slightly and provide a shoulder on the pin. Will you please make sure that all future parts made incorporate this modification. Existing parts can be rectified by increasing the hole in the rockshaft and making new pins with a shoulder. Hs{Lord Ernest Hives - Chair}/F.J.Hardy. P.S. We shall require this modification on the rockshaft in the box supplied to the Adamant Co., which we are fetching to-day. | ||