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).
Performance of a cross web piston with 4 pinned rings for a 20HP engine.
| Identifier | WestWitteringFiles\T\2July1928-December1928\ Scan108 | |
| Date | 19th September 1928 | |
| HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} O.{Mr Oldham} to B.I. [struck through] " WOR.{Arthur Wormald - General Works Manager} [struck through] " BY.{R.W. Bailey - Chief Engineer} [struck through] 20HP. ETC PISTONS - G.4. ORIGINAL R4/M19.9.28. X5040 X5230 X741 X5050 Although we have no further interest in the cross web piston tried on the above car, one should not conclude that 4 pinned rings will not hold gastight. We are very anxious to hear of new head and exhaust for this. R.{Sir Henry Royce} | ||