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 investigation and resolution of a developed piston knock on chassis 1-TW.
| Identifier | ExFiles\Box 48\1\ Scan116 | |
| Date | 13th February 1920 | |
| Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer} X4190 EP{G. Eric Platford - Chief Quality Engineer}3/F13.2.20. RE. DEVELOPED PISTON KNOCK ON CHASSIS 1-TW. With reference to the above new chassis delivered to London, which has developed a piston knock and which we heard when running at Conduit Street last Thursday, Mr. Archer now reports as follows :- "We have now dismantled this engine, and find that number 3 piston to all appearances was in quite good order. With the piston in the cylinder we could get in .008 round the skirt. Mr. Holgate opened out the skirt of this piston, re-erected the engine, and he has to-day given this chassis a good test, and it is now O.K.". We have written to Mr. Archer asking him whether he can account for this extra clearance, and whether the piston appears to be particularly weak, and to have collapsed. EP.{G. Eric Platford - Chief Quality Engineer} | ||