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).
Experimental parts fitted to chassis 7 C.A.
| Identifier | ExFiles\Box 19\2\ Scan062 | |
| Date | 13th June 1917 | |
| X.762 To Mr. Clark from FHC 13.6.17 RE CHASSIS 7 C.A. The above chassis has been fitted with the following expl. parts X.2963 Fitted with valves E.13154 Aero Valve Plugs in the End. ------------------------- X.2809 Pistons E.12386 with 4 Ring Grooves all stopped and .125 Extra on crown to Mr. Hives' instructions. ------------------------- X.2238 Electrical Speedometer fitted to Mr. Hives' instructions. ------------------------- X.762 Truffault's shock absorbers incorporating alteration 158 F.{Mr Friese} ------------------------- FHC. | ||