Frame stiffeners and modifications for the Wraith II Gearbox.
| Identifier | ExFiles\Box 8\11\ 11-page038 | |
| Date | 8th August 1936 | |
| DI. C.E. HS {Lord Ernest Hives - Chair} /Rm. {William Robotham - Chief Engineer} Da. {Bernard Day - Chassis Design} To R.Mc. GRYLLS 628 E {Mr Elliott - Chief Engineer} /HDY. {William Hardy} 4/HP.8.8.36. Wraith II Gearbox. We send herewith N.Sch.4867 showing a stiffener for the frame at the point of attachment of the engine and gearbox rear suspension. This stiffener is partly shown on N.Sch.4862. The stiffeners must be fitted to the frame at the same time as the suspension brackets are fitted as the stiffeners are not wide enough to accommodate expected frame variations. The forged suspension brackets already shown on N.Sch.4862 are to be of mild steel with nickel steel studs, which are to be a close fit in reamed holes in the cross bar. If preferred the stud and forging may be one piece but in this case the forging must be of nickel steel. The stiffeners may be of mild steel. We shall be sending particulars of two modifications which we require to give increased clearance for dismantling the gearbox from the car. They are (1) The joint between the engine and the clutch casing to be moved 1" backwards. (2) The 1st motion shaft to be shortened approx. .125". 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).