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 the performance of fabric pumps against a metal piston type pump.
| Identifier | ExFiles\Box 17\5\ Scan155 | |
| Date | 15th June 1932 guessed | |
| -2- Contd. Both the RR and the AMAL fabric pumps gave better results than the AMAL metal piston type. The AMAL fabric pump was provided with a very strong plunger spring (approx 75 lb/in rating) and it was observed during the above tests that the plunger followed the cam profile fairly closely, the max loss of stroke being approximately .050" compared with previous observed losses of .125". HS{Lord Ernest Hives - Chair}/W.Bell. | ||