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).
Particulars and performance figures for a Vauxhall 25 HP car.
| Identifier | ExFiles\Box 127\4\ scan0042 | |
| Date | 31th May 1937 | |
| To E.{Mr Elliott - Chief Engineer} c. to Hs.{Lord Ernest Hives - Chair} c. to By.{R.W. Bailey - Chief Engineer} 1097 Rm{William Robotham - Chief Engineer}/PD.1/JH.31.5.37. Vauxhall 25 H.P. We give below particulars and performance figures for the above car :- H.P. R.A.C. rating 24.97. Bore 3.226 ins (81.94 m.m.). Stroke 4.00 ins (101.6 m.m.). Piston displacement 3,215 cc's. Compression ratio 6.1 to 1. Sparking Plugs A.C. GAP .038"/.040". Tyre size 6.25" x 16" Revs/mile = 732.4. Valve clearance Exhaust .013") set at normal O.H.V. type inlet .006") working temperature. Gearbox ratios :- 4.44 - 6.66 - 9.77 and 14.20 to 1. Turning circle 41 1/2 ft. left and right. Petrol consumption tested over 350 miles no high speed work 18.15 m.p.g. Acceleration figures 10.20 - 4.9 secs. 10.30 - 8.5 " 10.40 - 13.9 " 10.50 - 20.0 " 10.60 - 28.8 " 10.70 - 43.9 " Ticknall Hill. Time 61.6 secs. Speedometer was checked, found to be 4% fast up to 40 m.p.h. correct at 50 and 60 M.P.H. Car complete weight front t. c. q. lbs. Rear 14 0 7 Total 1 16 3 7 1 10 3 14 cont'd.{John DeLooze - Company Secretary} | ||