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).
Comparative analysis of petrol tank weights for various cars, showing pounds per gallon.
| Identifier | ExFiles\Box 125\1\ scan0227 | |
| Date | 25th March 1935 | |
| To E.{Mr Elliott - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to Sg.{Arthur F. Sidgreaves - MD} c. to Wor.{Arthur Wormald - General Works Manager} c. to By.{R.W. Bailey - Chief Engineer} c. to Bn.{W.O. Bentley / Mr Barrington} x1729 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}15/KW.25.3.35. Comparative Petrol Tank Weights showing lbs. per gallon. Herewith analysis of various car tank weights, which confirms that we are unnecessarily heavy. We are handing the Cadillac tank over to you for inspection. The new Bentley tank mentioned is one made up experimentally for this 10,000 miles test. Car Weight of Petrol Tank Capacity lbs. Weight per Gallon. SpectreCodename for Phantom III 57 lbs. 28 galls. 2.3 lbs. Bentley Std. 46 lbs. 18 galls. 2.55 lbs. Bentley New 37 lbs. 6 ozs. 18 galls. 2.075 lbs. Cadillac 35 lbs. 14 ozs. 25 galls. 1.44 lbs. HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||