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).
Camshaft blueprints, supplier issues, and updated specifications for the M.40 engine.
| Identifier | ExFiles\Box 109\3\ scan0120 | |
| Date | 9th May 1941 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/HH. c. to Em. (struck through) c. to EV.{Ivan Evernden - coachwork} (struck through) c. to Rm{William Robotham - Chief Engineer}/GTS. c. to Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} myh (handwritten) 700 (handwritten) Rm{William Robotham - Chief Engineer}/HH. Please see me (handwritten) Am (handwritten signature) Rm{William Robotham - Chief Engineer}/HH.8/SW.9.5.41. OK Note 1616 (handwritten) M.40. Engine. Cam & Rocker Mechanism - Section 5090. PL.534/5 - Cam Forms. Please receive herewith blueprints of each of the following :- RE.1751 Cam Form - Inlet. (1 Off per set. - handwritten) RE.1752 Cam Form - Exhaust. (1 " " " - handwritten) RE.2422 Cam Shaft RE.2423 Cam Shaft The Camshafts are identical except that RE.2422 has 111 1/2° between the cams and RE.2423 has 114 1/2°. HPS{Horace Percy Smith - Experimental Factory Mgr}/Buckler has informed us that the (handwritten) "Monicrom" manufacturers have declined the order because they are busy and because their previous dealings with R.R. have failed to produce extensive business. Therefore, these camshafts are produced in S/ZN 2072 to B.S. Spec. S.67 and cancel Camshaft RE.1683 issued under memo Rm{William Robotham - Chief Engineer}/HH.10/SW.20.2.41. The L.O.P. RE.1682 has been altered accordingly under alteration No. 312/RE. Kindly instruct as required. Rm{William Robotham - Chief Engineer}/HH. | ||