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).
Programme of test bed work for Ph.III. No.10 Unit, detailing new parts and test procedures.
| Identifier | ExFiles\Box 155\2\ scan0087 | |
| Date | 19th April 1937 | |
| To Rm{William Robotham - Chief Engineer}, from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c.c. Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} c.c. Rm{William Robotham - Chief Engineer}/OTS. 1315 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}10/AP.19.4.37 PROGRAMME OF TEST BED WORK. Further to Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}6/AP.9.4.37 No.5.Test Bed. Ph.III. No.10 Unit Test to be preparatory to fitting into 33.EX. Special parts included are new liners:- Hepworth & Grandage. British Piston Ring Co. Standard. New standard pistons but with L. section 2nd. compression rings and high press. scrapers. 4 port deturbulated heads with std. compressi on ratio 6.1 Test as follows:- 1. Running in and power curve. 2. 1.000 starts on the starter motor. 3. Check ignition curves with exhaust silencer and on Ethyl as follows - (a) Line to give max. power. (b) " " be clear of detonations. (c) actual curve given by governor with the hand control fixed the ignitions being set std. that is 13° A.side 15° B.side. 4. Leaks etc. to be cured on the bed. Check for piston knocks starting cold. 5. Run one hour oil consumption. 6. Observe if engine gears are O.K. to go into car without attention. continued | ||