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).
Performance tests conducted on three cars at Brooklands race track.
| Identifier | ExFiles\Box 19\1\ Scan226 | |
| Date | 21th September 1932 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. SS.{S. Smith} Wor.{Arthur Wormald - General Works Manager} c. E.{Mr Elliott - Chief Engineer} De. c. Hdy.{William Hardy} W. X7120 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}5/CT.21.9.32. X788 X4027 BROOKLANDS TESTS. On Wednesday the 14th inst, some tests were carried out on various expl. cars on Brooklands track. The conditions were almost ideal for speed. (1) 36-GN. This car was fitted up to represent the proposed new continental model Phantom, except that it had the standard axle ratio, and 21" wheels. It was fitted with the R.R. semi-expanding carburetter, resonance type exhaust system, standard valve springs, stronger tappet springs, heavier exhaust valves, 5.20:1 C.R., and W.W. 114° camshaft. -i.e. as 19-EX. The car lapped at 87 m.p.h., and covered the half-mile at 90 m.p.h. (2) Peregrine. This car was run equipped with two S.U. carbs, its original exhaust system, and the new type damper to R.Sch.5497. It was also fitted with a 3.00" propeller shaft which had been very carefully balanced. The pivot lock of the steering had been increased to 4½° and the friction in the system adjusted. With four passengers the car held the track remarkable well. The steering was improved for selectivity and transmitted few road shocks. The high speed smoothness was better than previously, but there were still signs of the propeller shaft and engine periods at the higher speeds. The unit with the new crank is now on the test bed. The car lapped at 73.25 m.p.h. (3) 19-G-IV. The only modification to this car since running in France was, lowering the compression ratio and altering the ignition advance characteristics to eliminate detonation. The car lapped at 81 m.p.h. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||