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).
Maximum speed test for the 19-EX model, including valve timing and performance data.
| Identifier | ExFiles\Box 11\4\ 04-page110 | |
| Date | 18th July 1932 | |
| 87941 To Hs{Lord Ernest Hives - Chair}/Fm. From G.W.H. Hotel de France, Chateauroux, FRANCE. 18.7.32. MAXIMUM SPEED TEST. 19-EX. Conditions same as previous test. During this run a heavy side wind was blowing. Previous figures taken with cut-out closed. Camshaft E.82448. Valve Timing. I.O. 5.58° P.T.D.C? As first I.C. 54.75° A.B.D.C? brought E.O. 11.16° F.T.D.C. out. E.C? 46.5° B.B.D.C. Carburetter Needle 90° Ignition. Magneto 7° B.T.D.C. Battery 12° B.T.D.C. One driver & passenger. Axle ratio 12 X 41. Wheels 19" Ballast in rear 110 lbs. Times for flying half mile:- IN. OUT. TOTAL AVERAGE. M.P.H. Cut-out closed 21.8 secs 21.8 secs 43.6 secs 82.56 " " 21.6 secs 21.8 secs 43.4 secs 82.94 Cut-out open 21.8 secs 21.4 secs 43.2 secs 83.33 " " 21.0 secs 21.2 secs 42.2 secs 85.31 " " 21.0 secs one way only......... 85.72 m.p.h. G.W.H. | ||