Rolls Royce 20 hp ( 1922 - 1929)
 

Rolls-Royce 20 H.P., 1927, Bertelli Sports Tourer Code-named "Goshawk" several experimental chassis had shown most promising results when severe tests of the first 'baby' Rolls-Royce had been executed. The Rolls-Royce 20 hp is easily recognizable by its horizontally arranged radiator shutters (only the last series sported vertical shutters). With a shorter wheelbase and a more economical engine it proved an ideal addition to Rolls-Royce's range as a second model alongside the Silver Ghost. Its lighter weight and a reduced turning circle gave the 20 hp fine handling. large number were provided with formal coachwork and heavy bodies didn't enhance performance. 2885 Rolls-Royce 20 H.P. were built. Wheelbase 3277 mm 129 in   Track front 1422 mm 56 in   rear 1422 mm 56 in   Length 4521 mm 178 in   Kerb weight 1930 kg 4255 lb   engine Manufacturer Rolls-Royce Type S-6 SV 12 valves total 2 valves per cylinder Main bearings 7 Bore × stroke 76.20mm × 114.30mm 3 in × 4.5 in Bore/Stroke ratio 0.67 Displacement 3127 cc (190.821 cu in) Unitary capacity 521.17 cc/cylinder Compression ratio 4.80:1 Fuel system 1 Rolls-Royce carb Aspiration Normal Max. output 50.7 PS (50.0 bhp) (37.3 kW) @3000 rpm Coolant Water Specific output 16 bhp/litre 0.26 bhp/cu in Top speed 105 km/h Power-to-weight 25.91 bhp/ton chassis Engine location Front Engine alignment Longitudinal Suspension Front LA.SE. Rear LA.SE. Tyres F 32 x 4.5 Tyres R 32 x 4.5 Brakes F/R -/Dr Transmission 3M Drive RWD