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 sheet detailing the specifications for Buick overhead valves.
| Identifier | ExFiles\Box 124\3\ scan0036 | |
| Date | 20th June 1917 | |
| X3317 R.R. 26 10M Bks.) (SE 591 13-3-18). M.P. 189358 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Hives Date: 20.6/17 1917 Order No. Customer's No. Buick overhead Valves Dia of valve stem .300" " " " Head 1.400" Width of valve seating .150" angle " " 45° Outside dia of spring 1.150" No of Coils 8 S W G 11 length of spring free 2.200" " " " valve closed 1.700" 46 1/2 lbs " " " valve open 1.450" 66 lbs length of valve 4.700" Weight of valve 2 ozs 10 drms " " spring 2 ozs " " Pocket 10 ozs " " locknut 2 ozs 8 drs " " spring washers 12 drs " " cotter & Brass washer 4 drs complete 1 lb 2 ozs Signed [Signature] This Sheet must be filed on completion of the work. | ||