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).
Comparison of different engine timing schemes depicted in circular diagrams.
| Identifier | ExFiles\Box 33\4\ Scan088 | |
| Date | 1st August 1927 | |
| -2- PRESENT RR.F. TIMING SCH. 888. 20 16 48 60 12 8 40 52 .010 clearance. Heavy acceleration only. RR.F. TIMING. HS{Lord Ernest Hives - Chair}/VH1/LG10.8.27. 1 8 39 39 Clearance unknown. We cannot understand this. E.{Mr Elliott - Chief Engineer} | ||