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 parts not yet fitted to production 20/25 HP and 40/50 HP chassis.
| Identifier | ExFiles\Box 154a\3\ scan0022 | |
| Date | 2nd September 1931 | |
| X3066 BY/Mn8/N.2.9.31. PARTS NOT YET FITTED TO PRODUCTION CHASSIS. 20/25 HP. & 40/50 HP. CHASSIS - STANDARDISATION SHEET. Date Issued | Stn.Sht. No. | Title | Date completed | Series where brought in | Chassis To Test. 20/25 HP. Chassis. 14.1.31 | X.4037 | Enots Petrol Filter. | 6.3.31 | Not decided. 15.1.31 | X.5480 | Automatic oiling of Clutch Spigot from Gearbox. | 16.4.31 | 101 in 'T'. 14.1.31 | X.5930 | Brake Shoes, front and rear .375" thick. | 16.4.31 | Not decided. 2.12.30 | X.5520 | Spring loaded tubular connecting links for 25HP. hydraulics. | 6.5.31 | Not decided. 29.4.31 | X.5000 | Increasing oil Capacity in engine sump to 1.25 gallons with a possible 1.5 gallons. | 14.7.31 | 101 in 'T'. 40/50 HP. Chassis. 6.5.31 | X.7040 | Longer skirt piston. | 6.5.31 | 141 in 'N'. | ||