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).
Diagram for a Peregrine camshaft modification showing valve timing angles.
| Identifier | ExFiles\Box 169\4\ img233 | |
| Date | 21th December 1932 | |
| PEREGRINE CAMSHAFT. MOD TO E100863 HS{Lord Ernest Hives - Chair} 802 4 EX 1 IN 2 EX 4 IN 6 EX 2 IN 3 EX 6 IN 5 EX 3 IN 1 EX 5 IN DIRECTION OF ROTATION C OF CAM C OF KEYWAY 107.5° (+1°) 60° 2° ROLLS-ROYCE, LTD. PRINT ROOM DEC 21 1932 DERBY. 21/12/32 | ||