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).
Test report on petrol delivery variation by different autovac units under various conditions.
| Identifier | ExFiles\Box 40\4\ Scan201 | |
| Date | 20th January 1927 guessed | |
| AUTOVAC TESTS. Tests demonstrating the variation in petrol delivery by different autovac units. (1) Petrol delivery by various autovac at 1500 r.p.m. full engine throttle. Induction pipe depression 1.9" Hg. Petrol lifted through 31 15/16". N.B. The engine demand under these conditions is 52 pts per hr. | No. of Autovac Unit. | Petrol delivery. | |---------------------------|-------------------------| | | Time for 1 pt. secs. | Flow pts/hr. | | Expl: Autovac (model) | 69.8 | 51.6 | | Autovac off 8-EX. | 77.1 | 46.7 | | Production autovac No.1. | 86.4 | 41.65 | | " " No.2. | 85.3 | 42.2 | | " " No.3. | 88.5 | 40.7 | (2) As (1) but induction pipe depression 4.25" Hg. | Expl: Autovac (model) | 45.2 | 79.65 | | Production autovac No.1. | 48.0 | 75.0 | | " " No.2. | 51.4 | 70.2 | | " " No.3. | 51.0 | 70.6 | (3) As (2) but induction pipe depression 7.5" Hg. | Expl: Autovac (model) | 39.5 | 91.1 | | Production autovac No.1. | 43.2 | 83.3 | | " " No.2. | 44.7 | 80.5 | | " " No.3. | 43.3 | 83.3 | contd :- | ||