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 34\2\ Scan039 | |
| Date | 13th June 1917 | |
| X.2238 To Mr. Clark from RHC{R. H. Coverley - Production Engineer} 13.6.17 RE CHASSIS 7 C.A. X.682 ✓ X.180Y The above chassis has been fitted with the following expl. parts. X. 2983 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. on YCA. X. 762 Truffault shock absorbers incorporating alteration 158 F.{Mr Friese} RHC.{R. H. Coverley - Production Engineer} | ||