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).
Page 2 of a report comparing the performance and weight of an RR pump versus a Feuerheerd pump.
| Identifier | ExFiles\Box 149\2\ scan0021 | |
| Date | 22th December 1927 guessed | |
| contd :- -2- light loads but more noisy under high pressures at high speeds. Feuerheerd delivery less regular and sets up vibrations in the pipes. The delivery is rather spasmodic under high pressures. Wt. of RR. pump............ 3 lbs. 7 1/4 ozs. " " Feuerheerd pump......... 3 lbs. 1 oz. Feuerheerd pump leaks at the face joint under high pressures. Hs{Lord Ernest Hives - Chair}/W.A. Robotham. | ||