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).
Engine and vehicle specifications.
| Identifier | ExFiles\Box 29\1\ Scan028 | |
| Date | 1st September 1925 | |
| R.R. 495a (50 H) (D.D. 31. 12-6-25) J.H.D. -3- Expl. No. REF. Hsl/LGS. 9.25. EXPERIMENTAL REPORT. Engine :- Bore 3" Stroke 4.8" Capacity 2.12 litres. Wheel base 10 ft 4½" Track 4 ft 5½" Direct drive 4.17 - 1. Tyres 765 X 105 Claimed H.P. 50, at 3000 r.p.m. Max. road speed About 65 m.p.h. Turning circle 36 ft. dia. centre of tyre tread. ----------------------- Hs.{Lord Ernest Hives - Chair} | ||