Laboratory report detailing a comparison of specific gravity and evaporation rates for various petrol substitutes.
| Identifier | ExFiles\Box 77\2\ scan0130 | |
| Date | 20th October 1916 | |
| RR. 864b. ROLLS-ROYCE, LIMITED. L 303 LABORATORY REPORT. To: Mr Nadin Date: 20th Oct 1916 Re: Petrol substitute from Test Dept Dept laboratory on: 18th Oct received by Pratts Vakony (Light .680) | Mex Spirit | Stanton Substitute | Hall Substitute S. Gravity: 0.678 | 0.715 | 0.794 | 0.489 Evaporation test 4 hours in air at 18°C %age loss: 40.0% | 24.3% | 19.0% | 4.1% 10 mins at 30°C (%age loss): 8.0% | 4.0% | 3.0% | 2.4% 10 " " 40°C: 10.0 | 7.2 | 6.6 | 3.0 10 " " 50°C: 15.7 | 7.6 | 6.7 | 4.7 10 " " 60°C: 26.0 | 7.8 | 6.9 | 5.5 10 " " 70°C: traces | 24.7 | 19.9 | 8.7 Residue: nil | 24.4% | 37.9% | 41.6% From above it appears that the substitute are not so volatile as petrol. they appear to be mixture containing paraffin, gassoline, some benzol & also wood spirit. HCSdn Signature | ||
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).