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).
Requesting the fitting of a strengthened and tested combustion chamber head to unit No.9.
| Identifier | ExFiles\Box 108\3\ scan0072 | |
| Date | 20th October 1938 | |
| γ 600 To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}20.10.38. 29.G.VI (NO.9 UNIT.) Will you please fit the strengthened combustion chamber head (latest production) on to the above unit whilst the car is in the shop. This head has been run on the test bed on tests for cracking the seats and has been crack tested and found O.K. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||