Rolls-Royce Archives
         « Prev  Box Series  Next »        

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).
Revival of the flat 12-cylinder engine and proposing a study of its characteristics.

Identifier  ExFiles\Box 159\5\  scan0001
Date  25th October 1939
  
COPY.

To Ev.{Ivan Evernden - coachwork} from Rm.{William Robotham - Chief Engineer}

Rm.{William Robotham - Chief Engineer}9/MH.{M. Huckerby}25.10.39.

CYLINDER ARRANGEMENT OF MULTI-CYLINDER ENGINE.

There is a general revival of the flat 12 cylinder engine having 2 banks of 6 cyls. Leyland's are making one, also Meadows. It has various applications in commercial vehicles and particularly rail-cars.

I should like Swinden to co-operate with Bower and get out the general character of this unit with regard to bearing loads and crankshaft torsionals. For quantities we suggest he assumes two 4¼-litre B.Vs{J. Vickers} with Phantom III size and type big end bearings.

Stepney Acres wrote a paper on Inertia Torque which was published in the "Automobile Engineer" in about 1923.

Rm.{William Robotham - Chief Engineer}
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙