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).
Ignition timing setting for the turbulent head.
| Identifier | ExFiles\Box 17\6\ Scan044 | |
| Date | 31th May 1928 | |
| To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG31.5.28. [Handwritten, crossed out: X7060] TURBULENT HEAD. [Handwritten: X7050 / X7060 (crossed out)] The ignition setting on the turbulent head is 10° later than on the cast iron head. The flywheel marking for the timing with the hand control in the fully advanced position is therefore 10° B.T.D.C. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||