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).
Comparative chart of aerodynamic resistance data for various Rolls-Royce and Bentley car models.
| Identifier | ExFiles\Box 161\1\ scan0197 | |
| Date | 22th September 1938 | |
| AERODYNAMIC RESISTANCE. ROLLS-ROYCE & BENTLEY CARS. CAR:- CHASSIS NUMBER H.P. AT LAP SPEED. LAP SPEEDS M.P.H. FRONTAL AREA SQ. FT. WGT. TONS ACTUAL K ACTUAL Cx{Major Len W. Cox - Advertising Manager} 'K' TUNNEL FLAT PLATE 'K' TUNNEL REFLEXN REMARKS. BENTLEY STD. SALOON | 2.B.3 | 92.5 | 85.0 | 23.400 | 1.70 | .00204 | .813 | .001695 | .00193 BENTLEY "STREAMLINE" | B-23-AE | 92.5 | 95.0 | 19.025 | 1.60 | .001845 | .722 | .00160 | .001725 BENTLEY - E.R. HALL. | B.35.AE | 92.5 | 90.0 | 15.000 | 1.40 | .00283 | 1.105 | .00190 BENTLEY - B.3. | 7.B.5 | 90.0 | 87.0 | 24.060 | 1.84 | .00195 | .764 BENTLEY - "PAULIN" | | 90.0 | 97.0 | 21.600 | 1.70 | .00154 | .524 | .00073 WRAITH - C.T.L. | | 65.0 | 74.0 | 27.270 | 2.05 | .0020 | .782 PHANTOM 3 - C.T.L | | 127.5 | 91.0 | 28.80 | 2.70 | .00205 | .803 Stamp Top Left (upside down): ROLLS-ROYCE LTD. PRINT ROOM SEP 22 1938 DERBY. Stamp Bottom Right: ROLLS-ROYCE, LTD. PRINT ROOM SEP 22 1938 DERBY. | ||