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).
Proposal for a Vee 8 C.I. 2-stroke tank engine, detailing crankshaft characteristics and performance.
| Identifier | ExFiles\Box 132\2\ scan0196 | |
| Date | 27th January 1941 | |
| Swinton - A proposed tank C.I. engine To - Rm.{William Robotham - Chief Engineer} from Wd.{Mr Wood/Mr Whitehead} Wd.{Mr Wood/Mr Whitehead}8/RS.{Sir Henry Royce's Secretary}27.1.41. To follow on "Merlin" Crankshaft General file. PROPOSED VEE 8 C.I. 2-STROKE ENGINE. With reference to the above proposal I am attaching herewith Mr. Bower's examination of the Torsional Characteristics of the Crankshaft from which it will be seen that a comparatively small spring controlled vibration absorber is fitted. The engine will be very satisfactory as regards the T.V. With regard to R.P.M. and torque, the following would be a useful basis :- For 500 HP., 8 cylinders, the b.m.e.p. at 2250 r.p.m. is 83.3 x 2 lbs/sq.in. ------------ Att: ½ Wd.{Mr Wood/Mr Whitehead} [signature] | ||