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).
Reports on Jaguar and Bentley exhaust systems, crankshaft oscillations, and engine timing adjustments.
| Identifier | ExFiles\Box 155\2\ scan0214 | |
| Date | 27th April 1938 | |
| -5- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}27.4.38. GENERAL. (1) Report on Jaguar exhaust systems compared with our own 2 Bentley systems, but with same manifolds. (2) Report on crankshaft torsional oscillations including comparative photographs of Wraith and Bentley diagrams. NO.5 TEST HOUSE. B.III No.3. Further to our previous memo Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} has now found 1/2 tooth late gives best power result, therefore when engine has been timed accordingly carry out items 1, 2, 4, 5, and 6. The rear end bearing seal has been modified and it should be noted if there is any oil leak into the clutch pit. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||