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).
Fan belt fouling against the starting handle bearing carrier on Phantom III and Wraith III engines.
| Identifier | ExFiles\Box 94\5\ scan0029 | |
| Date | 22th March 1937 | |
| 324 To E.{Mr Elliott - Chief Engineer} from HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} O.{Mr Oldham} to Hy{Tom Haldenby - Plant Engineer}/De. (struck through) c. to Rm.{William Robotham - Chief Engineer} (struck through) C to By (struck through) Noted Rm{William Robotham - Chief Engineer}/smy HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}1/VS.{J. Vickers}22.3.37. STD PHANTOM III. BEARING CARRIER FOR STARTING HANDLE. A foul is experienced on Phantom III engine unit between the fan belt and bearing carrier E.85888 when the engine is running at high speeds. The fan belt assumes a shape as shown on Ex.1.144. The shape a fan belt will assume at high speeds will depend upon the initial slackness, and a belt which is adjusted with minimum slack will clear. As slackness develops, however, the small clearance disappears and fouling occurs when the required speed is attained. Suggest that more clearance be given at this point by increasing the distance between the arms of the bearing carrier. The above also applies to Wraith III (EW.482) where a similar condition exists. R.{Sir Henry Royce} Hollingworth. | ||