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).
Letter from The Midland Motor Cylinder Co. Ltd. regarding tappet materials suitable for use with Monikrom camshafts.
| Identifier | ExFiles\Box 93\5\ scan0072 | |
| Date | 20th January 1938 | |
| 307. SWDL{Len H. Swindell} Miles The MIDLAND MOTOR CYLINDER Co LTD. Telegrams RAFWORK, SMETHWICK Telephone 1151-2-3 SMETHWICK Our Ref:- TECH. DEPT. ECT/HA. MIDCYL Birmid Works, Smethwick Near Birmingham Your Ref:- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}5/MH.{M. Huckerby} Messrs. Rolls-Royce Limited, DERBY. 20th. January. 1938. Dear Sirs, Monikrom Camshafts. We have your letter of the 17th January for which we thank you. In regard to material for tappets, our own tests have been most extensively carried out with case hardened steel, and experience has shown that these give remarkably good results. We have several customers, however, who use chilled cast iron tappets in conjunction with Monikrom camshafts, and they are perfectly satisfied with them. In general, we find that a manufacturer does not make any change of tappet material when replacing case hardened steel camshafts with Monikrom, and we know of no case in which a changeover has been found necessary. Yours faithfully, THE MIDLAND MOTOR CYLINDER CO.LTD. (E.C. Tophill) TECHNICAL DEPARTMENT. | ||