Triumph's four-valve racer took its name from Harry Ricardo, whose London firm's address appears on the drawings. Recent research credits much of the design work in 1920-21 to Major Frank Halford, who worked with Ricardo and later raced the machine himself.

For 1922 the engine had four overhead valves, a bore of 85mm and stroke of 88mm, a light-alloy piston and dry-sump lubrication fed by its own pump, unlike the hand-pumped total-loss system on Triumph's road machines. It was said to give 18 bhp at 5,000 rpm, around 80 mph. A three-speed gearbox replaced the previous year's two-speed. The brakes were older thinking: a vee-block working on a dummy rim at the back, and a rope-on-pulley brake at the front.

Triumph sent four works riders to the 1922 Senior. Walter Brandish, aged 21, led for a time before losing second gear after the third lap and finished second to Alec Bennett's Sunbeam. Fred Edmonds dropped his machine at Union Mills on the second lap while lying fourth and broke a handlebar; Reuben Harveyson retired at Crosby a lap later with a stuck valve; Halford finished thirteenth.

Brandish's name stayed on the course. After he crashed and broke a leg at the bend between Creg-ny-Baa and Hillberry in 1923, it became Brandish Corner, the first on the course named after a rider.

Facts: Race: 1922 Senior TT, 6 laps, 226½ miles; Result: 2 Walter Brandish (Triumph), 56.52 mph; 13 Frank Halford (Triumph); Engine: four-valve single, 85 x 88mm, dry sump, 18 bhp at 5,000 rpm; three-speed gearbox; Triumph reportedly built 24 dry-sump racing Ricardos; none sold to the public

The video shows a rotating render of a 3D model built for Manx Road Racer, a game set on the Isle of Man's historic courses. It is a reconstruction made from period photographs and drawings, not a scan of a surviving machine.