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).
Problem of cylinder bore wear and proposing investigations into new materials for liners or integral block castings.
| Identifier | ExFiles\Box 132\4\ scan0159 | |
| Date | 10th August 1938 | |
| 1124 R G / Vs.{J. Vickers} from Hm.{Capt. W. Hallam - Head Repairs} c. Hs.{Lord Ernest Hives - Chair} c. Ey. c. HUC. c. Ds. c. RFS. c. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rml/W.10.8.38. CYLINDER BORE WEAR. With the improvement in the bearing situation brought about by overdrive gearboxes and increased crankshaft diameters, cylinder bore wear is now the worst feature of our engines. We have instituted a series of tests on rig engines whereby we can accelerate bore wear by means of repeated cold starts, etc. We are, therefore, anxious to try various samples of material which can be produced in our own Foundry with a view to improving our production products. There appear to us to be two lines of attack:- (1) The best material which can be produced in liner form. (2) The best material which can be produced as an integral block casting. As we are committed to blocks without liners on the Wraith and at the present moment the cast iron B.30 Series of engine has been designed without liners, the materials which can be used for casting a block complete are perhaps of the most interest to start on. We should be glad if the Foundry could let us have their recommendations as soon as possible having regard to the work which has already been done by other Companies on this subject. Hm.{Capt. W. Hallam - Head Repairs} | ||