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).
From the Test Department detailing the average weights of the 40/50 'U' series and 20 HP chassis.
| Identifier | ExFiles\Box 107\4\ scan0061 | |
| Date | 24th February 1925 | |
| COPY. X4538 To Hs{Lord Ernest Hives - Chair}/ACL. from Test Dept. 24.2.25. RE. CHASSIS WEIGHTS. x9930 [struck through]x4538[/struck through] In reply to your telephone message :- 40/50 'U' series. 20 HP. Average weight - total 3800 lbs. 2490 lbs. Average front axle weight. 2018 lbs. 1177 lbs. Average rear axle weight. 1782 lbs. 1313 lbs. Above weights - full of water,oil, petrol, with tyres, battery also spares for 20 HP. (not 40/50). Test Dept. | ||