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).
Engine liner wear results from a series of three different tests.
| Identifier | ExFiles\Box 103\2\ scan0038 | |
| Date | 11th March 1939 | |
| -9- Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}3/EH.11.3.39. (B) Cont'd.{John DeLooze - Company Secretary} TEST No.2. Parts under test: Liners as test 1. Method of test. Start up and run 30 mins. at 1500 r.p.m. Shut down and allow to cool from 80°C to 50°C. Result: wear - .0002 (total = .0006) TEST NO. 3. Engine removed to cold chamber. Parts under test: As Test No.1 (same liners). Method of test. 1 cycle. (Start up, run at 1500 r.p.m. till water temp. reaches 80°C. shut down and allow to cool to 0°C. (1 hr. 15 mins. stop). 50 cycles completed. Result: Wear - nil. (total wear = .0006"). TEST No. 4. Parts under test: As Test No.1 (same liners). Method of Test. Engine returned to test bed. 1 cycle. ( Start up and run immediately at 2000 r.p.m. full throttle until water reaches 80°C. (7 minutes run). ( Shut down, drain water and allow to cool slowly. (20 mins. stop). 50 cycles completed. Result: Wear - nil (total wear = .0006"). | ||