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 technical specifications and updates for various car components including brakes, suspension, engine, and instrument panel.
| Identifier | ExFiles\Box 182\M18\ img004 | |
| Date | 22th April 1932 | |
| -2- Br.{T. E. Bellringer - Repair Manager}/20H.P./22.4.32. Cont'd.{John DeLooze - Company Secretary} B.S.M.A. per set fitted. The price we paid for the four fasteners on ly-sx. was 6/4d. per set. It is not proposed to standardise these fasteners, the object is to gain some experience with them. (11) Flexible Spring Shackle. This is to R.Sch.3033. (12) Brakes. Cast iron brake drums front and rear, Lake and Elliot material. Anti-squeak brake shoes front and rear. (13) Rear Axles. 12/41 ratio instead of std. 11/41. (14) Road Wheels. 19" rims in place of 20" rims, with two rows of spokes (cheaper construction). (15) Gearbox. Synchromesh. 10° angle cones. Larger dia. crank. 2.3 dia. journals. 2.37 pins. Crankshaft balanced C/S scheme. Std. crankcase bored out. Pistons standard. Connecting rods. Std. except to suit larger crankpins. Cylinder head. Modified to give a compression ratio of 5.25/1 Valve Springs. Double type. Camshaft. Long duration high lift. 114° between cams. Carburetter. R.R. semi-expanding. Petrol Pump to LoC.2961 A separate report has been sent on this. Instrument Patch. The instrument patch fitted to 19-EX. has been made from pressings instead of aluminium die-castings. The chief object of this is to reduce the cost. The instruments except the rev. counter and ammeter have been supplied by Messrs. Smiths. It is proposed to adopt these instruments on the 25 H.P. and so far nothing has been decided about Phantom II. The saving with the sheet metal patch and Smiths instruments is approx. £1d per car. | ||