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).
List of experimental investigation work for the Bentley & 20/25 models.
| Identifier | ExFiles\Box 3\6\ 06-page235 | |
| Date | 2nd October 1934 | |
| x45T 3 2.10.34. EXPTL. INVESTIGATION WORK BENTLEY & 20/25. (1) Front End Chassis Movement. (a) Wing stiffening. (b) Cross member stiffening. (c) Bumper bar damping. (d) Damping with radiator. (e) Effect of shock damper load Whyman, Hardy. (2) Brakes Fading. Direct to 4 Wheels. (a) Stiffer drums (water exclusion). (b) M.Z. lining (servo also of this test). (c) Steel shoes. (d) Thermo couple tests. (e) Larger front drums. Grylls. (3) Engine Smoothness. (a) Rubber mounting front and rear. (b) Best position for damping. (c) Short link for clutch pedal to eliminate front links. (d) Try softer rubbers with damping. Whyman. (4) Axle Tramp. (a) Variation with damping. (b) " " " frame stiffness. (c) " " " lining. (d) " " " king pin, face(4° & 2°). (e) " " " longitudinal inclination. (f) Effect of bumper damping. (g) " " " tyre pressure & tread. (h) " " " tyre size. Grylls. (5) Improved Snap Opening Up. (a) Smaller Induction Pipe. (b) Air intake temp. (bring ex. heat to intake). (c) Smaller carbs. (d) Standard carbs. with damped pistons. (e) Varying carb. needles. Dodd, Salt | ||