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).
Blueprint for Continental Phantom double tapered valve springs.
| Identifier | ExFiles\Box 17\6\ Scan112 | |
| Date | 2nd July 1932 | |
| L.E.C. 3136 ROCKER COVER LIP. GAUGE OF WIRE, & SPRING LOADS WITH VALVE CLOSED, ARE SAME AS SPECIFIED FOR L.E.C. 2993. IF THESE SPRINGS ARE USED ON PRODUCTION CARS, THE CORE PLUG SHOULD BE MOVED AS SHOWN HERE. IN EX CONTINENTAL PHANTOM DOUBLE TAPERED VALVE SPRINGS REFER TO L.E.C. 2993 SCALE 1/1 L.E.C. 3136 ROLLS-ROYCE, LTD. PHOTO RECORD B JUL 32 DERBY. A.H.S.Stay 2/7/32 | ||