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 crankshaft for a new 14 HP six-cylinder engine, seeking feedback on the similar Marmon crankshaft design.
| Identifier | ExFiles\Box 180\M1\9\ img013 | |
| Date | 29th August 1921 | |
| To HS.{Lord Ernest Hives - Chair} from R.{Sir Henry Royce} Copy to CJ. 'SWALLOW' & Crankshafts ORIGINAL R4/G29/8/21. X1692 X4405 RE CRANKSHAFT FOR NEW 14 H.P. SIX-CYLINDER ENGINE. Will you kindly let us know whether you consider the crankshaft on the Marmon really satisfactory. We are proposing a somewhat similar crankshaft for the new 14 H.P. six-cylinder. In the case of our smaller engine we hope it will be capable of running at 4,000 revs., but as the Marmon is a much bigger engine, wethought that if it could do, say, 2700, our smaller one would do 4,000 easily with a crankshaft of about the same proportions. We send you a sketch of our proposals for this crankshaft, and shall be glad if you will send us the design and dimensions of the Marmon crankshaft. R.{Sir Henry Royce} YRR RECEIVED FC AUG 31 1921 H.R. 29.7.1921. 1 M-3-21 W.& S.Ltd Gp 20/21. 165 | ||