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).
Outlining a suggested programme for testing bore wear on development cars using various experimental materials.
| Identifier | ExFiles\Box 132\5\ scan0043 | |
| Date | 20th February 1939 | |
| Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} Rm{William Robotham - Chief Engineer}/CTS{C. Trot Salt - Carburation}2/R.20.2.39. BORE WEAR. Attached is our suggested programme for fitting up the Company's development cars, with experimental material, in order to obtain a lead for future production. 10,000 miles' chassis we regard as a mechanical test to prove the short insert, not for bore wear figures. In the case of the cast iron engine, apart from repeating the same material (as allocated) for the B.V. unit, we have included a piston comparison to get experience with both types of piston, and bearing in mind that this particular car will attempt to pile up high mileage. In the case of experimental and transport cars, we have purposely lined up our latest R.R. and Aerolite pistons so that we get wear figures repeated on both types of piston running in conjunction with the various combinations of cylinder materials. It will be noticed that one car will be doing mileage without inserts, and that no car is allocated for testing Chrome plated bores. The latter treatment is too far away at the moment, it being necessary to design special tackle. In the case of the car without inserts, the idea is, that we should be testing something other than the insert in case the idea is found to be unsuitable mechanically for our type of engine. All the required pieces have been instructed prior to this, and as completed they should be labelled according to the car allotted in the programme. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||