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).
Testing plain cast iron cylinder liners for the Phantom III engine to address distortion issues.
| Identifier | ExFiles\Box 93\4\ scan0064 | |
| Date | 21th September 1936 | |
| RHC{R. H. Coverley - Production Engineer} c. Sp.{Mr Spinney} Wor{Arthur Wormald - General Works Manager}- Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} Sft.{Mr Swift} +319 Rm{William Robotham - Chief Engineer} Swoll- E.3/HP.21.9.36. Phantom III Cylinder Liners. With further reference to E/Lid.{A. J. Lidsey}1/HP.18.9.36, which shows that we can save £8/2/- per engine by using cast iron liners made in these works instead of the centrifugally cast Sheepbridge Stokes variety, some of the early Phantom engines were fitted with liners made here. At that time we were in a certain amount of trouble with liner distortion due to the lower gland, but as we were still in the same difficulty with the first centrifugally cast liners it seemed clear that the trouble was limited to getting proportions of the gland right, and was not associated in any way with the material differences of the liners. We should not anticipate much difference between the rigidity of the Sheepbridge and plain cast liners, and although the former may provide a more lasting wearing surface the latter should be as good as we are manufacturing on the Bentley and the 25/30 chassis, or even better, on account of its simple form compared with a cylinder block casting. Will you, therefore, please put in hand some sets of plain cast iron liners for test. [Handwritten note at the bottom] For our continental P.III we might- leave a ring round the liner close to the gland to prevent distortion & instruct in R.R. cast iron | ||