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).
Priming tests for a Bentley helical gear oil pump, noting the positive effect of a B.W.P. type filter.
| Identifier | ExFiles\Box 149\2\ scan0116 | |
| Date | 21th September 1935 | |
| To E.{Mr Elliott - Chief Engineer} X 1265 Hs{Lord Ernest Hives - Chair}/WB.{Mr Brazier/Mr Bell}3/KW.21.9.35. LeC.4288 Bentley Oil Pumps. Priming Tests - Helical Gear Pump. Further to previous report 16.9.35. Considering the "B.W.P." type of filter in connection with the above, it was observed that it was possible for oil to enter the suction pipe, and expel the air therein, whilst filling up the sump, due to the inclination of the hinged section of the pipe. This is a favourable feature in respect to the priming problem, and, since B-4-A unit - in 1-B-IV chassis - was fitted with this type of filter, the sump was drained and refilled on three occasions, and each time the pump self-primed without difficulty. Hs{Lord Ernest Hives - Chair}/W.Bell: | ||