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).
Cancellation of experiment X.2369A for a chassis 7 ringed piston without a skirt.
| Identifier | ExFiles\Box 181\M11\ img054 | |
| Date | 5th July 1917 | |
| EFC/AT5.7.17. X.2369A - CHASSIS 7 RINGED PISTON WITHOUT SKIRT. This Experiment can now be cancelled being considered as superceeded by X.2369B.- Chassis 7 Ringed Piston with skirt. E.F.C. EFC. | ||