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).
Secret memo discussing modifications to oil grooves in Spectre strap-type connecting rods, referencing blueprint LeC.4624.
| Identifier | ExFiles\Box 93\1\ scan0112 | |
| Date | 3rd August 1935 | |
| 2314 To BY.{R.W. Bailey - Chief Engineer} from E/JNR.{Charles L. Jenner} E/JNR.{Charles L. Jenner}1/HP.3.8.35. c. RHC.{R. H. Coverley - Production Engineer} c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} SECRET. SpectreCodename for Phantom III - Strap Type Connecting Rods. On the next set of rods we should like to modify the oil grooves in the big-end. We send you herewith:- LeC.4624 showing the circular oil groove added to improve the lubrication of the blade rod, the two transfer grooves are only carried to one side of the centre line. This grooving can apply to either the white metal or lead bronze linings. LeC.4624 attached. (BY) Blueprint to RHC.{R. H. Coverley - Production Engineer} E/JNR.{Charles L. Jenner} | ||