Performance charts for a 20 HP model, showing acceleration and velocity under various configurations.
| Identifier | ExFiles\Box 113\2\ scan0118 | |
| Date | 19th November 1926 guessed | |
| 32 20 H.P. PERFORMANCE ACCELERATION ACCELERATION FT/SEC/SEC ROAD SPEED M.P.H. LEGEND (TOP GRAPH): 1 HIGH COMP 20 H.P. 2 HIGH COMP 20H.P. CUT OUT OPEN 3 STANDARD 20H.P. 4 20 H.P. SINGLE LORRAINE CARBURETTER STANDARD TOURING WINDOVER 4 SEATER, HOOD & CURTAINS UP. AXLE RATIO 11 x 50 CAR WT. EMPTY 1.56 TONS. VELOCITY M.P.H. TIME SECONDS. LEGEND (BOTTOM GRAPH): 1 HIGH COMP. 20.H.P. MOD. EX. MANIFOLD 2 DITTO . " . CUT OUT OPEN 3 STANDARD 20.H.P 4 AS 2. SINGLE LORRAINE CARB. | ||
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).