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 induction pipe depressions for E.A.C. and 40/50 HP engines at various speeds.
| Identifier | ExFiles\Box 66a\2\ scan0111 | |
| Date | 1st May 1925 | |
| V5070 To BY/C. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} V2758 V5070 Hs{Lord Ernest Hives - Chair}/Rml/LG26. 5. 25. Herewith is a list of the induction pipe depressions of the EAC. and 40/50 HP. taken under full throttle conditions at each speed. It will be observed that at the higher speeds the difference between these two engines is rather marked. RELATIVE INDUCTION PIPE DEPRESSIONS. E.A.C. AND 40/50. R.P.M. Induction pipe depression ins. H20 E.A.C. 40/50. 650 13.55" 14.25" 750 15.25" 16.6" 1000 19.00" 21.9" 1250 21.40" 29.6" 1500 26.40" 37.3" 1750 31.90" 46.1" 2000 38.4" 60.0" Full throttle - depression measured ins. of water. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||