The testing of cross web pistons and the gas-tightness of pinned rings.
| Identifier | ExFiles\Box 6\7\ 07-page039 | |
| Date | 9th September 1928 | |
| Hs. {Lord Ernest Hives - Chair} from H. {Arthur M. Hanbury - Head Complaints} c. to BJ. Wor. {Arthur Wormald - General Works Manager} BY. {R.W. Bailey - Chief Engineer} Y5230 R4/M9.9.28. 20 HP. ETC. PISTONS. G.4. X.5040 X.5230 X.741 X.5050 Although we have no further interest in the cross web pistons tried on the above car, one should not conclude that 4 pinned rings will not hold gas-tight. We are anxious to hear of new heawd and exhaust for this. H. {Arthur M. Hanbury - Head Complaints} | ||
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).