Comparison of wind tunnel data for a Park Ward Streamline Bentley and a Vanvooren Bentley.
| Identifier | ExFiles\Box 161\1\ scan0054 | |
| Date | 11th November 1937 guessed | |
| WIND TUNNEL DATA. CAR. Projected area in sq.ft. Wind Tunnel Drag in lb. at 70 ft. secs. Theoretical Drag full size in lbs. at 100 MPH Theoretical K. {Mr Kilner} Actual K. {Mr Kilner} from car Computed K. {Mr Kilner} Lap Speed Flying ½ mile Max Road Speed Max Road Wheel HP. Park Ward StreamlineExperimental Streamline Bentley B.23.A.E Bentley B.23.AE. 19.025 1.0810 305 .0016 .001825 - 95 100 105 92.5 Vanvooren Bentley. 21.600 .3735 164 .0076 - .000863 117 123 129 97.1 Results based on fact that B.23.AE. with 92.5 HP. at road wheels lapped at 95 MPH, did flying half mile at 100 MPH, and had a max. road speed of 105 MPH. | ||
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).