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 design modifications and their completion status for the Wraith II model.
| Identifier | ExFiles\Box 161a\4\ scan0185 | |
| Date | 5th February 1937 guessed | |
| ITEM. (2) DESIGN POSITION. WRAITH II (CONTINUED) Modified brackets for brake pedal cross shaft to reduce deflection. In hand. Reduced helix angle - gear box gears. In hand. Modified pivot forging - I.F.W.S. Completed 6.1.37. Reverse shaft with 1.00" dia. rear bearing - to reduce cost. Completed 11.1.37. Split aluminium rear jack brackets. Completed 19.1.37. Modified lubrication of steering pivot - to reduce cost. Completed 13.1.37. Mods. to change gear bracket to increase clearances and reduce cost. Completed 15.1.37. Mods. to brake operation - front brakes - to reduce cost. Completed 18.1.37. Oil pipes to pedal shaft, clutch and brake damper cylinder Completed 19.1.37. Oilway through gearbox central diaphragm. Completed 19.1.37. Lubricating coil pipe - upper triangle, inner end - front suspension. Completed 22.1.37. Mods. to rear brake linkage to reduce cost. Completed 22.1.37. Mods. to first speed selector lever to reduce cost. Completed 21.1.37. Mods. to forged housing and end cover to clear main lever, front suspension. Completed 26.1.37. Rear hub - to suit final Wraith rear axle. Completed 1.2.37. Mod. to fulcrum pin in yoke - to reduce cost. Completed 3.2.37. Mod. to lower triangle - front suspension - to clear foul. Completed 1.2.37. | ||