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).
Standardisation sheet listing modifications for the 40/50 HP chassis from late 1926 to early 1927.
| Identifier | ExFiles\Box 29\2\ Scan130 | |
| Date | 1st February 1927 guessed | |
| - 2 - 40/50 HP. CHASSIS - STANDARDISATION SHEETS. Date Issued | Title | Date Completed | Series where brought in | Chassis to Test --- | --- | --- | --- | --- 18.11.26. | Jubilee Clips for Rubber Connections OK | 17.12.26. | D-2 | 4.6.27. 20.11.26. | Modified Angle to Butterfly Throttle and Modified control to clear bonnet. OK | 13.12.26. | C-2-B. | 26.3.27. 26.11.26. | Incorporation of B. Type Lever on chassis with "C" steering. OK | 2.12.26. | D-2 | 4.6.27. 9.12.26. | Alteration to Lever to reduce percentage of front braking. OK | 25.1.27. | 51st.C-2-A | 19.2.27. 15.12.26. | Single Arm Throttle Governor Control Lever with larger diameter roller. ✓ OK | 20.1.27. | C-2-B | 26.3.27. 24.12.26. | Flexibility in Servo Shaft YEX. ✓ ? | 17.1.27. | D-2 | 4.6.27. ------------------- | ||