The performance of new type pistons and expanding gudgeon pins in chassis 48-TW after 4,000 miles.
| Identifier | ExFiles\Box 48\1\ Scan147 | |
| Date | 27th April 1921 | |
| X4190 Hs. {Lord Ernest Hives - Chair} from EP. {G. Eric Platford - Chief Quality Engineer} EP {G. Eric Platford - Chief Quality Engineer} 17/F27.4.21. A.T. RE. NEW TYPE PISTONS AND EXPANDING GUDGEON PIN. X4190 Bt {Capt. J. S. Burt - Engineer} reports on his chassis 48-TW as follows :- "48-TW has run 4,000 miles since the new pistons "were fitted and no trouble is experienced with "either elusive knock or piston knocks. On starting "up from cold there is a very slight piston tap "noticeable, but this is gone within a minute without "holding the extra oil valve down. Compressions are "good and there seems to be little trouble experienced "with "blowing past". The fumes from the engine are "scarcely every noticeable now, though before the "fitting of the new pistons they were exceedingly bad." EP. {G. Eric Platford - Chief Quality Engineer} | ||
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).