Listing 15 improvements for testing on the 7-EX Chassis in France.
| Identifier | WestWitteringFiles\P\July1926-September1926\ Scan006 | |
| Date | 2nd July 1926 | |
| R.R. 285A (100 T) (S.H 159. 11-8-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO HS. {Lord Ernest Hives - Chair} FROM R. {Sir Henry Royce} C.c to BJ. LHS. {Lord Herbert Scott - Chair} BY. {R.W. Bailey - Chief Engineer} PN. {Mr Northey} ORIGINAL 7-EX. CHASSIS. X8992 X8770 X770 The following recent improvements are for testing in France next winter:- (1) Correct auto: advance - metal piston. (2) Hydraulic shock dampers - 80/40 or 100/50 as found best. (3) Pistons - (unimportant) single bolt pedestal. (4) Valves that will least cause self ignition. (5) Aluminium carburetter with bronze ring on air port. (6) Red light on thermometer for bonnet. (7) Steering - 2000 lbs. per in. buffer springs, and all ball joints spring loaded. (8) Light axle - front. (9) New tyres - semi-balloon. (10) 2 level, 2 filter, back tank, and white faced gauge. (11) Standard battery - P. & R. {Sir Henry Royce} or mixed half and half. (12) Revised oil relief valves. (13) Duralumin throttle disc. (14) Cutout stop and latest mechanism. (15) Switchbox altered to B. & M. {Mr Moon / Mr Moore} with O. {Mr Oldham} charge etc. / Separate switch to cut out magneto. This car will do for me until we get lighter Phantom engine and chassis, EAC. 7. or 9., when I shall hope to have a new body, perhaps of a different type. R. {Sir Henry Royce} | ||
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).