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 modifications and their completion status for 20/25 HP and Bentley chassis.
| Identifier | ExFiles\Box 30\4\ Scan217 | |
| Date | 3rd July 1934 guessed | |
| ITEM. DESCRIPTION. (1) --------------------------------------------------------------------------------- 20/25 HP. CHASSIS. Modification to top and third S/M sleeves to prevent Completed. rattles. Scaled down all helical SpectreCodename for Phantom III gearbox. in hand. Alteration to air valve guide - horizontal carburetter. Completed. Flexible engine mounting - tie rod. Completed. BENTLEY CHASSIS. ---------------- Ignition changeover switch - two coils - L.T. switch. In hand. Oil filter for auto adjusting tappets. in hand. Modification to top and 3rd S/M.sleeve to prevent Completed. rattles. Scaled down all helical SpectreCodename for Phantom III gearbox. In hand. Double valve springs for aluminium cylinder head. Completed. Modified gudgeon pin end plugs. Completed. Modification to flexible rear engine mounting Completed. Clutch modifications to simplify production. Completed. Four bearing crankshaft. Completed. Rear end of crankcase and crankshaft - 4 bearing Completed. crankshaft. Simplified water thermostat. Completed. | ||