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 results for an A.C. Petrol Pump Model 'G' detailing initial pumping times with different diameter suction pipes.
| Identifier | ExFiles\Box 17\5\ Scan174 | |
| Date | 23th August 1932 | |
| A.C. PETROL PUMP - LARGE TYPE - MODEL 'G' Tested as supplied. .250" stroke. Centres of fabric retaining holes 3.437" The following initial pumping times were recorded, the pump being run dry after each test. Both 5/16" and 1/4" diameter suction pipe lines were tested. 5/16" Dia. Suction Pipe. Initial Pumping Time At 20 r.p.m. 42 secs " 50 r.p.m. 16 secs " 75 r.p.m. 10 secs 1/4" Dia. Suction Pipe. Initial Pumping Time At 20 r.p.m. 25 secs " 50 r.p.m. 13 secs " 75 r.p.m. 8 secs. -------------- | ||