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 fit lengthened exhaust valve guides to cylinders 2 & 5 of a 25/30 HP unit for a test on valve temperatures.
| Identifier | ExFiles\Box 103\4\ scan0172 | |
| Date | 7th May 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} x519 Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}10/KW.7.5.36. 25/30 HP. Units. Will you please make and fit lengthened exhaust valve guides Rm.{William Robotham - Chief Engineer}127 to the cylinder head which will be supplied for the job by HS{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation} These to be fitted only to Nos. 2 & 5 cylinder exhaust valves. This is for a test on exhaust valve temperatures and the effect of shielding the valve. The reason for fitting to Nos. 2 & 5 cylinders is that they are the only ones visible for recording the temperature by an optical instrument. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||