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).
Endurance test specifications and procedures for the Phantom III No.6 engine unit.
| Identifier | ExFiles\Box 155\2\ scan0195 | |
| Date | 27th January 1938 | |
| -3- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/JH.27.1.38. Marking the fixed and free wheel of damper note relative movement by Rotorscope, the indicator arm being removed for this test. With the arm in position try stronger positioning springs. As a last resource we should try needle rollers as a bearing in place of BZ/PC bush. No.2 Bed. Phantom III No.6. Unit for endurance has following special features. (1) Packard type crank shaft. (2) Front centre and rear bearing, std. W/M.{Mr Moon / Mr Moore} Inters in centricast AC.6. (3) 3 Connecting rods with 11 H W/M on the blade rod faces and 3 in std. R.R. W/M.{Mr Moon / Mr Moore} Forked rod bushes in thin section centri cast AC. 6 material. (4) Rectangular section bottom tappets LEC.5667. 6 in 1/C with chilled face. 6 in S/ZN. with chromium plated face. (5) Latest production 4 port cylinder heads, A side having S/LV valve seat inserts (6) Up to date solid rocker gear. Following running in for new parts carry out power curves open exhaust, then examine bottom tappets. If tappets are O.K. refit and run endurance under following condition. Tappet clearance to be recorded throughout run. 25 hrs. duration at an oil inlet temp. of 100 °C caried to 125°C. Each hour as Bentley speed. | ||