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).
Performance graph comparing low-speed power outputs for different engine configurations and timings.
| Identifier | ExFiles\Box 179b\2\ img117 | |
| Date | 4th October 1932 guessed | |
| LOW SPEED POWER. RM.{William Robotham - Chief Engineer}PR.34 TOED CAMS SHAFT DED. CAMS. 108 1/2° SHAFT 1.125 INLET VALVES LONG REACH PLUGS FLEXIBLE SKIRT PISTONS 1.2 INLETS SHORT REACH PLUGS 110° SHAFT B.M.E.P. LBS./□' INDUCTION DEPN. INS. Hg T.D.C. 13 108 1/2° Ex 45 .020 IN 38° B A 110 100 90 80 70 60 3 2 1 3500 4000 4500 5000 | ||