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 | WestWitteringFiles\N\July1925-September1925\ Scan220 | |
| Date | 12th June 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. C EXPERIMENTAL REPORT. -3- Expl. No. REF: Hs{Lord Ernest Hives - Chair}1/LCS.9.25. Engine :- Bore 3" Stroke 4.67" 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} | ||