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).
The 9-PK mock-up chassis and its original gearbox.
| Identifier | ExFiles\Box 66\4\ scan0187 | |
| Date | 8th June 1925 | |
| R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. 48310 REF Hs {Lord Ernest Hives - Chair} 1/LG8.6.25. To AJS. from Hs. {Lord Ernest Hives - Chair} c. to BY. {R.W. Bailey - Chief Engineer} 9-PK - 'W' SERIES, WITH SUBFRAME. 49770 9-PK car was rushed together as a mock-up chassis to be used by coachbuilders as a carrier for subframe bodies. It was never intended to be used as a complete car. The gearbox in that car is the original type. The change speed levers and brake levers were made by welded bosses. At the time we got the car ready we were told it did not matter if the car could not be run at all. We expect to have an improved gearbox of this type running in a week or 10 days. This is on the new WAC. chassis we are preparing for R. {Sir Henry Royce} Wewill make sure on that car that the change speed gear mechanism works correctly. Hs. {Lord Ernest Hives - Chair} | ||