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 to test an alternative single start shallow oil retaining thread on a future crankshaft.
| Identifier | ExFiles\Box 132\1\ scan0085 | |
| Date | 27th October 1938 | |
| - 2 - DA.{Bernard Day - Chassis Design}4/G.27.10.38. Also on this design we show in Fig.111 an alternative type of single start shallow oil retaining thread at the rear end of crankshaft, which we think will be more efficient than the standard oil thread. This should be tried out on some future crankshaft for comparative effectiveness. Standard type oil plugs in bores of pins and journals are to be used except in the rear journal. Will you please instruct experimentally as stated above. DA.{Bernard Day - Chassis Design} | ||