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 for a 40/50 HP chassis, listing parts not yet fitted to production.
| Identifier | ExFiles\Box 29\2\ Scan129 | |
| Date | 1st February 1927 | |
| X30GG. 1st February 1927. 40/50 HP. CHASSIS - STANDARDISATION SHEETS. PARTS NOT YET FITTED TO PRODUCTION CHASSIS. Date Issued | Title | Date Completed | Series where brought in | Chassis to Test --- | --- | --- | --- | --- 6.7.26. | Aluminium Induction Pipe and Bend in place of Cast Iron. (?) | 10.8.26. | C-2-B | 26.3.27 6.7.26. | Carburetter made in Alum. instead of bronze. (OK) | 10.8.26. | C-2-B | 26.3.27 22.9.26. | Servo Balance Links 25* (strikethrough) (?) | 29.10.26. | C-2-B | 26.3.27. 22.9.26. | Oil Relief Valve (OK) | 20.10.26. | D-2 | 4.6.27. 23.9.26. | Ignition Governor - Oil Relay Piston using Metal Packing Rings. (OK) | 20.10.26. | D-2 | 4.6.27. 23.9.26. | Fan with Duralumin Blades (OK) | 18.10.26. | D-2 | 4.6.27. 23.9.26. | Solid Key Type Bottom Tappet (OK) | 19.10.26. | C-2-B | 26.3.27. 22.9.26. | Thermometer with electrical contact (OK) | 22.12.26. | C-2-B | 26.3.27. 24.9.26. | Front Silencer (OK) | 19.10.26. | D-2. | 4.6.27. 1.10.26. | Gear Box to suit Plunger controlled Selectors - torsionally free 1st and 2nd pinions, and sliding wheels re-arranged to give definite end clearance. (O.K) | 27.10.26. | D-2 | 4.6.27. 24.9.26. | "D" type C.H.N.S. Keyed Type Change Gear Shaft - Modified bush and spring. (O.K) | 19.10.26. | D-2 | 4.6.27. 24.9.26. | Main Bearings with Steel Shells (O.K) | 27.10.26. | Not known. | 4.6.27. 1.10.26. | Rear Hydraulic Shock Dampers (OK) | 6.12.26. | D-2 | 4.6.27. | ||