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 listing the weights of various chassis components and a comparative note.
| Identifier | WestWitteringFiles\U\January1930-April1930\ Scan066 | |
| Date | 24th January 1930 guessed | |
| -2- + 30.75 | Radiator. | 61.6 | 92.35 + 8.5 | Water in Radiator. | 21.5 | 30 + 19.25 | Shock dampers (4) with connecting links etc. | 18.5 | 37.75 + 28.5 | Battery. | 52.5 | 81 + 30 | Spare wheel and tyre and rear wheel carrier | 54 | 84 + 8 | Side spare wheel carrier. | Nil. | 8 + 21 | Luggage grid. | Nil. | 21 + 32 | Mechanical Brake operating gear not included elsewhere. | Nil. | 32 + 2 | Undershields and engine side strays. | 9 | 11 + 2.25 <s>KaXXa</s> | Exhaust system. | 29 | 31.25 + 10.75 | Centralised Lubrication pipes, drip plugs etc. | Nil. | 10.75 | Petrol. | 98 | 98 - 6.5 | Bonnet. | 35 | 28.5 + 35 | All remaining chassis parts not weighed separately which include frame, steering column and box, petrol tank, petrol pipes, wiring and conduits spring shackles etc. | 461 | 496 +180 | Total of above chassis parts. | 2416 | 2596 The following 25 HP. R.R. weights are not separately classified above as the equivalent Chrysler weights are not available, these of course are included in the remaining chassis parts figure of 496 lbs. | ||