Experimental disc crank for a Goshawk engine, referencing the Hispano crankshaft and outlining proposed tests for new models.
| Identifier | ExFiles\Box 74\3\ scan0286 | |
| Date | 1st January 1924 | |
| X4221 R. {Sir Henry Royce} (at le Canadel(Henry Royce's French residence)) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} BJ. C. PJ. C. Her. C. Hs. {Lord Ernest Hives - Chair} G. {Mr Griffiths - Chief Accountant / Mr Gnapp} WH. Rgd/W15. 1. 24 DISC CRANKS. X4221 The experimental disc crank which we put in hand for a Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) Engine is now completed, and we shall soon have results. I enclose herewith a print of the Hispano Crankshaft, which is of the disc type, and useful information. Following up this matter, I have just issued to RHC. {R. H. Coverley - Production Engineer} DES. 36 (attached), showing three model cranks for test. The principal test I think for these models when we get them made will be to mount the crank in journal bearings, and rotate the crankshaft through an angle of say 60° by a lever bolted to one flange, and to bolt a fly wheel on to the other flange, producing a somewhat similar test to that which Hs. {Lord Ernest Hives - Chair} sometimes uses for steering levers. Rg. {Mr Rowledge} 2 encsi- Print of Hispano Crankshaft DES.36. | ||
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).