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).
Comparison of weights for coachwork materials when manufactured in Aluminium and Steel.
| Identifier | ExFiles\Box 96\4\ scan0103 | |
| Date | 3rd October 1936 guessed | |
| 258 COMPARISON WEIGHTS OF COACHWORK MATERIAL WHEN MANUFACTURED IN ALUMINIUM AND STEEL. | | Aluminium | | | Steel | | | Difference | | |---|---|---|---|---|---|---|---|---| | | Thick ness. | Kgs. | lbs. | Thick ness. | Kgs. | lbs. | Kgs. | lbs. | |---|---|---|---|---|---|---|---|---| | Body & Luggage Locker | 15 | 16.130 | 35.486 | 10 | 31.280 | 68.816 | 15.150 | 33.330 | | 2 body mouldings | 10 | 0.890 | 1.958 | 10 | 2.590 | 5.698 | 1.700 | 3.740 | | Plate sheathing front & rear upright | 10 | 1.330 | 2.926 | 10 | 3.870 | 8.514 | 2.540 | 5.588 | | Gutter to rear luggage locker | 10 | 0.250 | .550 | 10 | 0.720 | 1.584 | 0.470 | 1.034 | | Under Scuttle | 20 | 1.290 | 2.838 | 10 | 1.875 | 4.125 | 0.585 | 1.287 | | Front doors & plate sheathing | 15) 10) | 6.880 | 15.136 | 10 | 13.380 | 29.436 | 6.500 | 14.300 | | Rear doors & Plate sheathing | 15) 10) | 4.800 | 10.560 | 10 | 9.300 | 20.460 | 4.500 | 9.900 | | Luggage Locker door. | 15 | 5.135 | 11.297 | 10 | 9.950 | 21.890 | 4.815 | 10.593 | | Front Wings | 20 | 17.100 | 37.620 | 10 | 24.860 | 54.692 | 7.760 | 17.072 | | Front wing protection plates. | 15 | 3.020 | 6.644 | 10 | 5.850 | 12.870 | 2.830 | 6.226 | | Rear Wings | 20 | 8.100 | 17.820 | 10 | 11.780 | 25.916 | 3.680 | 8.096 | | Rear wing protection plates | 10 | 0.710 | 1.562 | 10 | 2.060 | 4.532 | 1.350 | 2.970 | | 2 wheel arches | 15 | 3.020 | 6.644 | 10 | 5.850 | 12.870 | 2.830 | 6.226 | | Tool box - lower part of trunk. | 10 | 1.700 | 3.740 | 10 | 4.940 | 10.868 | 3.240 | 7.128 | | Foot wells & Asbestos | 20 | 8.720 | 19.184 | 10 | 12.680 | 27.896 | 3.960 | 8.712 | | Petrol Pipe Casing | 15 | 0.570 | 1.254 | 10 | 1.100 | 2.420 | 0.530 | 1.166 | | TOTALS: | | 79.645 | 175.219 | | 142.085 | 312.587 | 62.440 | 137.368 | = 1 cwt. 63.219 = 2 cwts. 88.587 = 1 cwt. 25.368. | ||