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 vehicle parts with anticipated weight savings and associated remarks.
| Identifier | ExFiles\Box 82\3\ scan0170 | |
| Date | 1st February 1935 | |
| Part | Anticipated Wt. saving possible. | Remarks. --- | --- | --- Brake Linkage, Servo, etc. | 30 lbs. | Requires design work. Layout in hand by Girling. Road Springs | 20 lbs. | Experimental Dept. testing. Exhaust System | 20 lbs. | Exptl. Dept. are working on this. Battery | Probably nothing | Electrical Dept. to report. Radiator complete with water | 5 lbs. | Possibly more than this if Design can lighten shutters and bottom tank. Rear Axle | 10 lbs. | We think a lightened design should be bump tested. 4 lbs. out of hubs. Petrol Tank | 6 lbs. | Design required. Steering | 6 lbs. | Strengthened steering with lower ratio available for next 10,000 miles test. Shock Absorbers and control | 6 lbs. | Exptl. Dept. can produce and prove on bump. Front axle | 4 lbs. | This can be removed from the hubs. Design req'd.{John DeLooze - Company Secretary} Magnesium parts mentioned in Hs{Lord Ernest Hives - Chair}/Rs.{Sir Henry Royce's Secretary}18/TS.16.1.35. | 35 lbs. 13 ozs. | Up to Experimental Dept. Carried Forward | - 144 lbs. 13 ozs. | | ||