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).
Report with two tables showing representative steering gear preloads and the effects of blows on preload.
| Identifier | ExFiles\Box 95\1\ scan0328 | |
| Date | 17th August 1936 guessed | |
| TABLE No.1. Representative Steering Gear Preloads as Assembled by Production. All preloads measured at Steering Wheel Rims. Ph. III. Gear No. | Total Preload. | Cam Preload. 1 | 2 | 1 1/2 2 | 2 1/2 | 2 3 | 1 1/2 | 1 1/2 4 | 1 1/2 | 1 5 | 2 1/2 | 1 1/2 6 | 2 | 1 1/2 25/30. Gear No. | Total Preload. | Cam Preload. 1 | 2 1/2 | 3/4 2 | 3 1/4 | 1 1/2 3 | 2 | 1/2 4 | 2 1/2 | 1 1/2 5 | 3 | 2 6 | 2 | 1 7 | 2 1/2 | 1 1/2 8 | 2 1/2 | 1 1/2 TABLE No.2. Effect on Preload of Blows on Pendulum Lever and Rockershaft 25/30. Gear No. | Before - Total | Before - Cam Alone. | After - Total | After - Cam Alone. 1 | 2 | 1 | 1 1/2 | 1 2 | 2 1/2 | 1 1/2 | 3 1/2 | 1 1/2 3 | 2 1/2 | 1 1/2 | 1 1/2 | 1 4 | 3 1/2 | 1 1/2 | 2 1/2 | 1 | ||