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).
Performance graphs showing acceleration and velocity for a 20 HP car under various configurations.
| Identifier | ExFiles\Box 5a\5\ 05-page007 | |
| Date | 30th March 1927 guessed | |
| 20 H.P. PERFORMANCE ACCELERATION Y-AXIS: ACCELERATION FT/SEC/SEC X-AXIS: ROAD SPEED M.P.H. LEGEND (ACCELERATION GRAPH): 1. HIGH COMP 20 H.P. 2. HIGH COMP 20 H.P. CUT OUT OPEN 3. STANDARD 20 H.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 Y-AXIS: VELOCITY M.P.H. X-AXIS: TIME SECONDS LEGEND (VELOCITY 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 | ||