The addition of pull-off springs for the Wraith III rear brakes.
| Identifier | ExFiles\Box 7\7\ X 606 Brakes-page053 | |
| Date | 24th April 1937 | |
| AFM {Anthony F. Martindale} W'h' Gry {Shadwell Grylls} File bob [EHF] Cr {Mr Cra’ster / Mr Chichester} No. Des. Pu. PATT SECRET. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} 3/HP.24.4.37. Wraith III Brakes. We send herewith N.Sch.5117 showing additional pull off springs for the rear brakes. It is not possible to secure all that is required by increasing the strength of any of the existing springs. N.Sch.5117 herewith. E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} | ||
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).