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 an investigation into the optimal firing order for a straight-eight engine to reduce crankshaft vibrations.
Identifier | ExFiles\Box 132\1\ scan0051 | |
Date | 17th June 1938 | |
11/6 To E/Bn.{W.O. Bentley / Mr Barrington} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}10/MH.{M. Huckerby}17.6.38. Bearing in mind the work you have recently done on the Vulture crankshaft vibrations and the success of altering the firing order, we are wondering whether, when time permits, one of your people could ivestigate the best firing order for the straight eight with 242 crank arrangement in order to have the least amplitude with the 8 5½ and 4 per rev. crank vibrations. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||