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).
Specification sheet detailing vehicle performance, engine, suspension, and steering characteristics.
| Identifier | ExFiles\Box 22\2\ Scan002 | |
| Date | 19th July 1917 | |
| -2- Distance to pull up etc, contd. 40 M.P.H. Foot brake 221 ft. Side brake 477 ft. Engine Valve Timing. I.O. 12º P.T.D.C. } I.C. 47º P.B.D.C. } .002" clearance. E.O. 40º B.B.D.C. } E.C. 17º P.T.D.C. } Bore of cylinder. - 3.25" - Stroke 5.5". Valve Lift - Inlet .3" Exhaust .3" Compression. 1/3 : 61/63 Cu.Capacity 14.25 cu.ins. Vacuum in Induction Pipe - ¾" mercury. Springing. - No shock absorbers rear - elliptic springs under-slung. Length 50¾" centres - Front springs - axle bolted front of centre. Length 36" centres - Front springs bad. Rear springs - wheels hold road fairly well - Springing too hard. Ignition. Attwater Kent. Distributor at rear of cylinder block - drive vertical from rear end of camshaft - Coil only. Timing - Full retard 34º P.T.D.C. Full advance 34º B.T.D.C. - no automatic advance. Order of firing 1, 2, 4, 3. Steering. Irreversible - no wobbles. Road shocks felt badly on wheel. Dia. of circle to turn car - Right hand 40 ft. Left hand 40 ft 3¼" Lean of pivots - O.S. 5/16" N.S. 5/16". Taken between centres 9 5/8". Length of from centre of front universal joint to centre of rear axle - 64¾". Westinghouse Starter & Generator - separate units - Earthed electrical system. Contd. R.R. 199 (50x10 19-7-17) (1m) 661 'R' M | ||