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).
Request to prepare two S/M rings for testing the 20/25 and 3 1/2 litre clutch.
| Identifier | ExFiles\Box 85\2\ scan0340 | |
| Date | 6th December 1937 | |
| HPS.{Horace Percy Smith - Experimental Factory Mgr} 212 Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}16/JH.6.12.37. re 20/25 and 3 1/2 litre clutch. Please prepare two rings of S/M 10.500 outside dia. 8.400 inside dia. by .093 thick. +20 -20 These are required as packings for metallic clutch facings for testing on dynamometer, and need not be machined on faces. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||