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 new features and their status for a 20/25 HP chassis undergoing a 10,000-mile test.
| Identifier | ExFiles\Box 5a\4\ 04-page073 | |
| Date | 27th July 1934 | |
| X5840 To UG. To BS.{A J. Barnes - Assistant Manager} To W.R. To H.H. To E.W.H. To H.S. To Ld. To A.W. To DALY. To L.G. To G.E. To I.V. HA/Ra.17/KM.27.7.34. 10,000 Miles Test - 20/25 HP. The following new features were fitted to this chassis when it left England on 26.5.34 :- (1) Rubber engine mounting. [Handwritten]: { Two front links { Link from pedal, spring crooked (2) Cantilever pedals. [Handwritten]: Clutch fingers require mod on new clutch (3) Controllable dampers, Low rating springs. [Handwritten]: Standard. (4) R.R. carburetter with throttle edge slow running. [Handwritten]: Not standard (5) Harrison radiator matrix, 56 m.m. thick. [Handwritten]: Not standard works OK (6) Improved exhaust system. Re-positioned flexible mounting. [Handwritten]: Standardised. Heavy front box lagging Less exhaust noise (7) Propellor shaft damper to deal with rattles in the transmission. [Handwritten]: Standard (8) Improved intake silencer. Loc.4043. [Handwritten]: Standard (9) Baffle in bottom half to prevent loss of oil pressure when braking. [Handwritten]: Standard. (10) Semi-split pistons. [Handwritten]: Not Standardised (11) Scheme for preventing valves dropping into the cylinder. [Handwritten]: Standard (12) Flywheel and clutch to M.Sch.3836, 50% increase in area of friction material. [Handwritten]: Not standard (13) Link connecting engine and cantilever to eliminate clutch shudder. [Handwritten]: Standard but has to be modified. (14) Larger balance weights. [Handwritten]: Standard. | ||