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 available modifications for the 10,000 Miles Test Car engine.
| Identifier | ExFiles\Box 82\2\ scan0056 | |
| Date | 6th June 1934 | |
| Rm{William Robotham - Chief Engineer} x4553a To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E/Lid.{A. J. Lidsey} E/Lid.{A. J. Lidsey}1/HP.6.6.34. c. RHC{R. H. Coverley - Production Engineer} 10,000 Miles Test Car - 5-B.IV. The following modifications are available for test on this car. ENGINE. PRESENT CAR. (1) Oil sump drain plug at side of bottom half crankcase - LeC.3735. This item comes on production on 'C' series, no standardisation sheet has yet been issued. (2) Spring drive with separate slipper wheel - LeC.3602 N.B.G (3) Starter motor - (a) larger motor to RR. Sch.508 or (b) with reduction gear to LeC.3892 (4) Crankshaft with integral balance weights. - LeC.3825. (5) Magnesium parts. (6) Rear engine suspension - LeC.3845. (7) Front engine suspension -LeC.3883. (Handwritten note next to 6 & 7: PEDALS EXHAUST CONTROLS MOUNTING CARBS) (8) Battery ignition - double contact breaker - LeC.3323. (9) Modifications to enable fan belt to be removed - LeC.3784. (10) Oil pump - aluminium body - helical gears - LeC.3827. PRESENT CAR. (11) Support ring for valves - LeC.3873.3933. (12) Wick lubrication of battery ignition contact breaker cam - LeC.3840. Halford Tappets (13) Modification to valve rocker shaft oil holes - E/JNK.l/Hr. 23.3.34. (14) Modification to valve rocker arms - LeC.3881. PRESENT CAR. (15) Carburetter mods.to prevent petrol spilling over engine LeC.3911. 3947 | ||