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).
Analysing the 25 HP chassis weight in comparison to a Chrysler car, concluding not to add further weight.
| Identifier | ExFiles\Box 107\4\ scan0098 | |
| Date | 14th January 1931 | |
| To R.{Sir Henry Royce} From Hs.{Lord Ernest Hives - Chair} c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to Da.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} c. to Hy.{Tom Haldenby - Plant Engineer} 4538 Hs.{Lord Ernest Hives - Chair}2/MJ.14.1.31. 25 HP. CHASSIS WEIGHT. When we analysed the Chrysler car which we had at Derby we found that their chassis weight was very much lighter than ours. The weight of the Chrysler chassis less engine and gearbox was 1621 lbs. and the engine displacement 4397 cc's. equal to 370 lbs. of chassis weight/litre displacement. The weight of our present 25 HP. less engine and gearbox is 1913 lbs. If we increase the size of the engine to 4.5 litres the chassis weight will be 420 lbs. chassis weight/litre displacement. We consider, therefore, that we should not add any further weight to the chassis until it has been proved that it is necessary. Hs.{Lord Ernest Hives - Chair} | ||