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).
Secret memo detailing engine design considerations from a meeting at Le Canadel.
| Identifier | ExFiles\Box 72\1\ scan0203 | |
| Date | 1st March 1924 | |
| 49070 To E.{Mr Elliott - Chief Engineer} & DA.{Bernard Day - Chassis Design} FROM R.{Sir Henry Royce} c. to CJ. BJ. RG.{Mr Rowledge} WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer} HS.{Lord Ernest Hives - Chair} PN.{Mr Northey} S E C R E T. R4/M22:3.24. E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. ENGINE - X.9770 MEETING AT LE CANADELHenry Royce's French residence - (RC.{R. Childs} HS.{Lord Ernest Hives - Chair} & R.{Sir Henry Royce}) CAM & VALVE TIMING. X.9090. It was considered and agreed that it would be worth while to make cams which match Hispano at say 1/8" opening, assuming the foot and also lap does very little. INDUCTION & CARBURETTER. X.9080 X.9070. The suggestion to have 2 carburetters and throttles connected to a common air inlet was considered but not recommended for reasons given by HS.{Lord Ernest Hives - Chair} Induction pipes probably quite good for the present. HS.{Lord Ernest Hives - Chair} is going to retest RR. single throat carburetter. EXHAUST. X.9230 HS.{Lord Ernest Hives - Chair} finds this as originally designed wasting power. An alternative is larger like G.11. or double 3s. to front small silencing box, or big pipe. E.{Mr Elliott - Chief Engineer} to find what can best be made. DETONATIONS. Mr. Rowledge thinks we may get benefit from an aluminum head. E.{Mr Elliott - Chief Engineer} should try for plugs between push rods, automatic advance, double battery ignition, and standby magneto with 2 sets of plugs, one between push rods, possibly induction pipe cast in head, on other side. Plugs in head of cyl. block, horizontally at each side. SEE ORIGINAL FOR SKETCH. R.{Sir Henry Royce} | ||