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).
Table detailing the weights of front chassis components for various models.
| Identifier | ExFiles\Box 173\1\ img153 | |
| Date | 31th January 1934 | |
| To Rm.{William Robotham - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Les.{Ivan A. Leslie} Hs{Lord Ernest Hives - Chair}/Les.15/KW.31.1.34. Weights of Front of Chassis. CHASSIS | AXLE WITH CONTROL | PAIR OF ROAD SPRINGS | PAIR OF WHEELS. 40/50 HP. | 233 lbs. wt. | Type 1150 lbs. 78 lbs. wt. Low Rating. | 162 lbs.wt. 20/25 HP. | 164.3 lbs.wt. | Type 750 lbs. 56.4 lbs. wt. Low Rating. | 131 lbs.wt. Bentley. | 128 lbs. wt. | Type 650 lbs. 38.2 lbs.wt. | 108 lbs.wt. | ||