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 test results and engine specifications for a vehicle.
| Identifier | ExFiles\Box 124\3\ scan0269 | |
| Date | 20th December 1934 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}4/KW.20.12.34. Performance Tests. Ticknall Hill. Start 1st Gate Finish Time 10 m.p.h. 37 m.p.h. 67 m.p.h. 54.4 secs. Acceleration tests on Shardlow Road - Average of 6 runs (3 in and 3 out) Time 1st gear 10 m.p.h. to 25 m.p.h. - 2.9 secs. 2nd gear 10 " to 30 " - 4.8 " 10 " to 40 " - 7.9 " 10 " to 50 " - 12.8 " Top gear 10 " to 20 " - 4.2 " 10 " to 30 " - 7.7 " 10 " to 40 " - 11.9 " 10 " to 50 " - 15.8 " 10 " to 60 " - 21.0 " 10 " to 70 " - 28.4 " Top speed attained on speedometer 81 m.p.h. in outward direction 80 m.p.h. in inward direction. Engine. Valve timing - I.O. - 4¹⁰ B.T.D.C. I.C. - 54⁰ A.B.D.C. E.O. - 58⁰ B.B.D.C. E.C. - 30⁰ A.T.D.C. Ignition timing T.D.C. Sparking plug gaps set at .025". Tappets checked over hot had the following clearances - No.1 .011" No.2 .013" No.3 .013" No.4 .014" No.5 .014" No.6 .014" No.7 .015" No.8 .012" No.9 .012" No.10 .014" No.11 .013" No.12 .012" No.13 .013" No.14 .014" No.15 .011" No.16 .014" | ||