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 test report of a Feuerheerd pump against a Daimler type gear pump, carried out by Daimler.
| Identifier | ExFiles\Box 149\2\ scan0016 | |
| Date | 26th October 1927 | |
| COPY OF TEST CARRIED OUT BY THE DAIMLER COMPANY LIMITED AT THEIR WORKS AT COVENTRY. -------------------- 26/10/27. COMPARISON OF FEUERHEERD PUMP SUPPLIED BY GENERAL HOLDEN WITH M.{Mr Moon / Mr Moore} Q. & V.{VIENNA} 20 DAIMLER TYPE GEAR PUMP. FEUERHEERD PUMP. DAIMLER PUMP. Revs. Pressure Time per ½ gall. Revs. Pressure Time per ½ gall. per Min. per Min. 200 10 lbs. 1 min. 12 secs. 200 10 lbs. 1 min. 50 secs. 200 40 " 1 " 13 " 200 40 " 2 " 58 " 200 60 " 1 " 15 " 200 60 " 5 " 56 " 200 100 " 200 100 " 328 10 " 44 " 328 10 " 1 " 1 " 328 40 " 45 " 328 40 " 1 " 16 " 328 60 " 46 " 328 60 " 1 " 32 " 328 100 " 328 100 " 3 " 54 " 412 10 " 35 " 412 10 " 48 " 412 40 " 36 " 412 40 " 58 " 412 60 " 36 " 412 60 " 1 " 8 " 412 100 " 412 100 " 1 " 50 " [Handwritten in red: 500] 592 10 " 25 " 592 10 " 31 " 592 40 " 25 " 592 40 " 35 " 592 60 " 25 " 592 60 " 38 " 592 100 " 592 100 " 47 " 640 10 " 22 " 640 10 " 28 " 640 40 " 22 " 640 40 " 31 " 640 60 " 22 " 640 60 " 35 " 640 100 " 23 " 640 100 " 43 " 728 10 " 20 " 728 10 " 25 " 728 40 " 20 " 728 40 " 28 " 728 60 " 20 " 728 60 " 31 " 728 100 " 21 " 728 100 " 35 " 1000 10 " 15 " 1000 10 " 19 " 1000 40 " 15 " 1000 40 " 20 " 1000 60 " 15 " 1000 60 " 21 " + 976 100 " 15 " + 960 100 " 22 " 1460 10 " 12 " 1460 10 " 12 " 1460 40 " 11 " 1440 40 " 12 " 1460 60 " 11 " 1440 60 " 13 " 1440 100 " 11 " 1440 100 " 14 " 2240 10 " 11 " 2240 10 " 8 " 2212 40 " 14 " 2220 40 " 8 " - 60 " 2220 60 " 9 " 2158 100 " 14 " 2220 100 " 9 " + Speed reduced when pressure 100 lbs. - Pressure not steady enough. Test with Machine Oil. Daimler Pump noisier than other. | ||