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).
Modifications to clutch cones for a 40/50 HP chassis flywheel and clutch.
| Identifier | ExFiles\Box 74\2\ scan0250 | |
| Date | 22th March 1919 | |
| March 22nd; 1919. BY/C3/GMK22.3.19. To. Mr. Mills from BY/C. To. Mr. c. to Mr. Swift. c. to Mr. Coverley. c. to E.F.C. c. to Mr. Insull. c. to Mr. Bowers. X.3439. 40/50 HP CHASSIS - FLYWHEEL & CLUTCH. Section 6000. Further to our memo BY/C1/GMK22.3.19 re modified Clutch Cones, will you please note that the Cones which are already machined should be drilled and tapped to dimensions given on sketch below, These tapped holes should be counterbored on one side as shown. In regard to those castings which have already been drilled to drawing - G.2192, please note that the new tapped holes should be spaced between the old ones. The new part number should be marked on the modified Cones. [Handwritten annotations on sketch] 6" dia centres 6 holes drill tapped .250 dia [crossed out] Counterbore .250 dia .200 deep BY/C. | ||