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).
Heavy and light flywheels for the B.60 engine, including modifications to the lighter flywheel.
| Identifier | ExFiles\Box 124\2\ scan0040 | |
| Date | 12th February 1940 | |
| File 10HH To Rm.{William Robotham - Chief Engineer} c. to EV{Ivan Evernden - coachwork}/HH. Ev.{Ivan Evernden - coachwork}6/JH.12.2.40. Flywheels for B.60 Engine - Lucas Starter Motor. We attach herewith two prints of PL.109 showing the heavy and light flywheels for the B.60 engine equiped with the Lucas starter motor. inertia The figures were given to us by NRC.{N. R. Chandler} and also the flywheel rim dimensions. In the case of the heavy flywheel we agree with NRC{N. R. Chandler}'s. calculations, but in the case of the lighter flywheel we have had to modify the dimensions to attain the inertia which he calls for. The lighter of these flywheels will be required for the Ripplet 2.R.2. Enclosed 4 copies of memo. Two prints of PL.109 EV.{Ivan Evernden - coachwork} | ||