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).
Instructions detailing specifications for a Delage engine cylinder block, valves, and pistons.
| Identifier | ExFiles\Box 21\4\ Scan027 | |
| Date | 12th February 1919 | |
| R.R. 20 10M Bks.) (SR 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Mr Hives Order No. Customer's No. X3500 12/2/1919 Delage Engine cylinder block. Dia of Water outlet 1 1/16" Dia of Inlet & Exhaust ports 1 5/32" Valves Dia of head 1 1/2" stem 7/16" length overall 6.450, angle of seat 35° Valve spring length 2 9/16" 10 coils compressed to 2 1/8" when in position 63 3/4 lbs fully compressed 22 lbs when compressed 1/2" Dia of wire 13/64" Weight of Valve 3 1/4 ozs spring 1 1/4 ozs Piston Weight without gudgeon pin or rings 14.5 ozs Weight of gudgeon pin 2.5 ozs Signed This Sheet must be filed on completion of the work. | ||