Test data table for various body configurations of a Model I Rolls-Bentley car, measuring aerodynamic drag.
| Identifier | ExFiles\Box 160\2\ scan0141 | |
| Date | 1st January 1908 | |
| RKB/23871 M.S. 1/8 -2- ROLLS-BENTLEY CAR ------------------- MODEL I TEST. FRONT WINGS REAR WINGS SCREEN TAIL REAR SPARE WHEEL PLATFORM STEPS DRAG FULL SIZE 90 M.P.H. lbs. 1 Nil Nil 17º Short Recess Nil 250.0 2 Nil Std. 17º Short Recess Nil 248.5 3 Std. (No outside Val) Std. 17º Short Recess Yes 285.0 4 Std. (With outside Val) Std. 17º Short Recess Yes 282.5 5 Std. (No outside Val) Std. 17º Short Outside Yes 286.5 6 Flared (without Lip) Std. 17º Short Recess Yes 280.5 7 Flared (with lip) Std. 17º Short Recess Yes 286.5 8 Birdwing Std. 17º Short Recess No 299.0 9 Panhard Std. 17º Short Recess Yes 280.0 10 Cycle Type Std. 17º Short Recess No - 11 Slipper Type Std. 17º Short Recess No - 12 Std. (No outside Val) Std. 25º Short Recess Yes 285.5 13 Std. (No outside Val) Std. 35º Short Recess Yes 283.5 13A Std. (No outside Val) Std. 45º Short Recess Yes 284.5 14 Best Wing Std. 25º Short Recess ? - 15 Best Wing Std. 35º Short Recess ? - 16A Panhard Std. 17º Long Recess Yes 288.5 16B Panhard Std. 25º Long Recess Yes 287.5 16C Panhard Std. 35º Long Recess Yes 286.0 16D Panhard Std. 45º Long Recess Yes 285.0 17 Panhard Std. 35º Short Recess Yes 278.0 18 Best Wing Std. Best Long Outside ? - 19 Nil Model Reversed Std. 17º Long Recess Yes 206.0 20 Panhard (Faired Rad) Std. 35º Long Recess Yes 252.5 21 Panhard (Faired Rad) Std. 17º Short Recess Yes 273.0 N.B: Tests Nos. 10, 11, 14, 15 and 18 were omitted owing to wings being unavailable. | ||
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).