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).
The Talbot 90 car, detailing its specifications and performance characteristics from the Olympia Motor Show.
| Identifier | ExFiles\Box 182\M19\ img258 | |
| Date | 26th October 1931 | |
| See Page 8 for comparison To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. A.{Mr Adams} Da.{Bernard Day - Chassis Design} Ry. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/AD26.10.31. x631 OLYMPIA MOTOR SHOW. We had the opportunity of trying three 18 HP. cars at the Motor Show. TALBOT 90. Engine displacement 2276 cc. Bore 69.5 mm./100 mm. Tax 17.9 HP. With a close coupled 4-door saloon body, and one spare wheel it is alleged to weigh 27 cwt. only. The top gear ratio was given as 4.6 : 1. Compression ratio 6 1/2 : 1 Wheelbase 10 ft. Track 4'7 1/2" Chassis weight 19 cwt. It is recommended that the car is run on benzol fuel. Sports Saloon price £635. Silence. The valve gear of this engine is very noisy when idling. There is a considerable amount of suction noise from the Zenith new type carburetter. The exhaust is not very noisy but at 2000 - 2500 r.p.m. there is a very pronounced induction pipe roar which completely spoils the feeling of refinement of the car. The exhaust does not appear to be unduly noisy. There was no detonations on ethyl fuel. Vibration. The engine is definitely rough on the pick up and at no speed is entirely free from vibration on the forward. We could not detect any crankshaft torsional periods. The engine seemed happier between 3000 - 4000 r.p.m. than at the lower speeds. The over-run appeared to be free from vibration. Road Performance. The engine has very little torque below 25 m.p.h. on top gear. Above this speed it is willing and lively. The peak of the torque curve would lie at about 2500 r.p.m. whilst the power output seemed to be well maintained up to 3500 r.p.m. There is a silent 3rd. gear but no very easy change. The brakes have very large diameter drums and were | ||