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).
Friction and bore wear tests, including customer car data and future programme details.
| Identifier | ExFiles\Box 132\5\ scan0092 | |
| Date | 3rd May 1939 guessed | |
| -3- Other Experiments - Cont'd.{John DeLooze - Company Secretary} Friction tests. In October of last year we approached the Lab. for collaboration in producing some form of accelerated bore wear tests. At that time the idea did not seem to be sufficiently practical. It now seems that the I.A.E. have carried out similar tests, and we are trying to get the Lab. interested, therefore. Future programme. As the result of a visit to Leylands, we have been able to considerably simplify the proposed design for a dry linered Ripple. Two engines are accordingly being fitted up. General Position. From wear figures that come in from customers' cars we know that the rate of wear is as follows:- 25/30 .00015/1000 miles. Bentley .0002/1000 miles. For some reason, we cannot produce anything like this result on cars owned and maintained by the Company. For instance, it is agreed that high speed tests in France produce wear at the rate of something less than half that of the average customer. It is also necessary to cover at least 10,000 miles in customers' hands to produce a result which is comparative. Under normal conditions, our experimental cars in the Garage take about 12 months to cover this mileage and it would be unreasonable to expect experimental engines to remain in one piece, undisturbed, during that period. | ||