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).
The testing of the latest type of split aluminium pistons and the investigation of elusive knocks.
| Identifier | ExFiles\Box 77\3\ scan0120 | |
| Date | 18th February 1920 | |
| x3751 Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer} EP{G. Eric Platford - Chief Quality Engineer}5/F18.2.20. RE. LATEST TYPE SPLIT ALUMINIUM PISTON TESTS. We have now carried out the changeover as proposed in our last report EP{G. Eric Platford - Chief Quality Engineer}1/F16.2.20, i.e., the cylinders and pistons offchassis 53-CW, which had run 6197 miles, and which were then bad as regards elusive knocks, (as per our last report referred to) have been sent to you to continue the test and investigation on your test bed. We have fixed up on this chassis the cylinders and pistons off 16-LW chassis, which were the second set of the latest type split aluminium pistons, and which on this chassis had run 1776 miles, but which, before dismantling, were finally tested and there were decided elusive knocks, one of which could be eliminated by shorting No. 1 cylinder. These cylinders and pistons have now been run on 53-CW car, for 316 miles, and elusive knocks are similar as on 16-LW chassis, as above reported. As arranged with you this morning, we are continuing to run this car in order to complete the tests on other fittings. The total mileage to date for the car is 6513 miles. Mileage of second set of pistons } on 16-LW - 1776. " on 53-CW - 316. ------- 2092 EP.{G. Eric Platford - Chief Quality Engineer} | ||