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).
Tappets fouling the camshaft journals on B.60 & B.80 units, with a suggested modification.
| Identifier | ExFiles\Box 123\5\ scan0348 | |
| Date | 27th February 1939 | |
| 1044 To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. By/CS. c. Da{Bernard Day - Chassis Design}/McS. c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}3/WH.27.2.39. B.60 & B.80 CAMSHAFTS. B.80 No.1 unit has been dismantled and we find that in several cases the bottom edge of the tappets have been fouling the radius of the camshaft journals. One tappet has been fouling so badly that the metal has broken away off the edges. We note that an alteration has been put through to 20259 whereby the radius in the cam journal E is reduced from .100 to .050, however, on inspecting the job we do not think that this would give adequate safe clearance. In view of this we suggest that the front face of the cam journals be taken back by .075 or thereabout, in which case a fine radius will not be necessary. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||