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 part modifications with corresponding chassis models and dates sent to the cost department.
| Identifier | ExFiles\Box 154a\3\ scan0057 | |
| Date | 11th September 1932 | |
| -2- 10 Hs.{Lord Ernest Hives - Chair}2/MJ.11.9.32. Cont'd.{John DeLooze - Company Secretary} X.No. Description. Chassis. Date sent to Cost. X.7310. Synchro-mesh Gearbox. Phan.2. 2.9.32. ✓ X.7250. Spring fitted to thermostat of radiator shutters. Phan.2. 13.9.32. ✓ X.3499. X.7360. Stronger Spring under aux. Shoe of rear Brakes. Phan.2. 2.9.32. ✓ X.7350. Rear Axle 12 x 41 Ratio. Phan.2. 2.9.32. ✓ X.7810. 19" Road Wheels with Two rows of spokes. Phan.2. 2.9.32. ✓ X.6080. Sequence Start Switch with relay portion deleted. Phan.2. 15.9.32. X.4469. Nitro-hardened Crankshaft. Phan.2. 15.9.32. X.7010. X.5600. Concealed Support for Side Spare Wheel Carrier. 25 HP. 15.9.32. X.4050. New Type Tyre Tread. 25 HP. & Phan.2. 20.9.32. ✓ X.5060. Valve Spring E.58525 & Cotter S.58524. 25 HP. 20.9.32. X.7090. 114° Camshaft Long Duration in conjunction with stronger tappet springs. Phan.2. 20.9.32. X.5310. Reverse Gear to GL.{G. Linnett}599. 25 HP. 20.9.32. X.7230. Improved Exhaust Valves made in S/SLV. Phan.2. 20.9.32. | ||