057 Alvis Speed 20SB DHC (1934) AEH 551 by Robert Knight Via Flickr: Alvis Speed 20SB (1934) Engine 2511cc S6 OHV Registration Number AEH 551 (Stoke on Trent) ALVIS SET www.flickr.com/photos/45676495@N05/sets/72157623759790764... The Alvis Speed 20 was launched as a luxury touring car, originally as the Speed 20SA in 1931 going through four variants coded SA to SD until 1936. The Speed 20SA was launched in 1932 powered by a heavily modified engine of the outgoing Silver Eagle, with triple HV4 type SU carburettors and an output of 87hp, driving through a four speed gearbox. As before the engine and clutch unit sat on flexible conical rubber mountings in a system used by Alvis from 1925. The chassis was new and lowered by making it a double drop type. where the side rails go over the front and rear axles. A centralised lubrication system was fitted allowing oil lubricate suspension points through a maze of pipework. Brakes were mechanically operated to the 14 inch drums. The car could be fitted with a variety of coachwork. Standard bodies were a four-door sports saloon from coachbuilders Charlesworth, a four-seater sports coupé or four-door tourer by Cross & Ellis, but some cars were supplied in chassis form and carried bodies by coachbuilders such as Vanden Plas. Approx 400 SA were built before replacement by the SB The SB was unveiled at the 1933 London Motorshow, With a new cruciform braced chassis, slightly longer at 124 in. independent front suspension using a single transverse leaf spring with a long solid anchorage in the centre, the steering and suspension were redesigned. The engine remained the same but the new all-silent gearbox, the first of its type, had synchromesh on all gears and was mounted separately from the engine As with the SA, a wide range of bodies were fitted to the cars. Large Lucas 12 in (305 mm) P100 headlamps became standard, adding to the sporting appearance of the car For 1935, the engine grew to 2762 cc by increasing the stroke with twin electric fuel pumps and the range designation became SC. Modifications were also made to the complex steering gear, and the front damping was improved and the rear stiffened. The final SD version for 1936 was similar to the SC but had a larger fuel tank and slightly wider bodywork. A 130 in (3,302 mm) wheelbase version became an option. Diolch am 95,808,343 o olygfeydd anhygoel, mae pob un yn cael ei werthfawrogi'n fawr. Thanks for 95,808,343 amazing views, every one is greatly appreciated. Shot 07.08.2022, at the VSCC Prescott Speed Hill Climb, Prescott, Gloucestershire REF 162-057
