Triumph T140W TSS — Wikipedia, the free encyclopedia

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Triumph TSX

Triumph T140W TSS

Development Edit

Designed to appeal to the US the TSS had an eight valve Weslake cylinder head developed by Brian Jones from a design originally commissioned Nourish Racing of Rutland [ 1 ] 1960s designs for the 650cc by the Rickman Brothers .

The crank was a machined single forging increased big end diameter making it stiffer and better-balanced and producing one of the running motorcycles in the Triumph [ 2 ] The head had smaller valves set at a angle. Recesses in the pistons a 10:1 compression ratio.

UK had a pair of 34 mm Amal carburetors while the export had Bing constant velocity Other changes from the T140E included offset rods. steel-linered alloy [ 3 ] [ clarification needed ] a strengthened arm, and a high output alternator .

A modified TSS raced by Jon Minonno for Jack Wilson ‘s Big D dealership achieved outstanding in the Battle Of The Twins races for [ 4 ]

According to the Triumph build held by the Vintage Motor Club. the first TSS was built on 27 1981 for the North American

Specification Edit

1982 specification Triumph TSS at the London Museum sporting the Morris wheel option but also with some non-standard parts: Girling rear absorbers, handlebar levers and a with parcel carrier

Launched in 1982 with an starter as standard, the all-new top end of the featured Cooper rings the 8-valve cylinder head to the American Morris alloy were an option with Automotive Products Lockheed brakes upfront as standard. The of the black painted engine polished although, like the TR65 Thunderbird. many cycle parts that had in the been bright–polished or chromed now painted satin black.

were stainless steel as the Italian Radaelli rims for the wheel option. The high air-oil ‘Strada’ rear units were supplied by firm Marzocchi. Like the petrol tank, other OEM were now from mainland French Veglia clocks, Paioli petrol taps and Bumm mirrors, Magura lever and ULO direction indicators. [ 5 ] [ 6 ]

Triumph TSX

Unlike most Triumph no USA style with high and two-gallon tank was produced, all coming with the Italian tank and low handlebars as well as the introduced alloy ‘dog clutch and front brake [ 7 ] The actual version exported to the USA a black paint scheme gold-lined red ‘wings’ along newly shaped megaphone and German Bing carburettors. [ 8 ] A variant in line with the Bonneville T140EX Executive was for a London dealer, albeit in gold-lined black, but with the standard Brearley-Smith ‘Sabre’ and luggage by Sigma. [ 9 ] All TSS were with Avon Roadrunner

Only 112 TSS bikes were exported by Triumph, as on 26 August the factory at Meriden went voluntary liquidation. It is calculated 438 TSS units were made in [ 10 ]

The engine was generally well by the press [ 11 ] [ 12 ] [ 13 ] [ 14 ] [ 15 ] [ 16 ] although a long test by Motor Cycle revealed early cylinder to be porous and wet weather braking [ 17 ] In an interview in US magazine, Motorcyclist . Director of Engineering, Brian revealed that the epoxy on the initial cylinder heads by Weslake disguised the porosity from their factory [ 18 ]


Fitting an engine in an anti-vibration frame was mooted by the factory at the 1981 Court motorcycle show on the super-tourer, TS8-1. Now displayed at the Motorcycle Museum. the TS8-1 had bodywork by Ian Dyson of contracted Plastic Fantastic. [ 19 ] [ 20 ]

For the unrealised 1983–1984 range, the TSS was to had Meriden’s ‘Enforcer’ anti-vibration as standard where the engine was in a special anti-vibration frame. changes included the adoption of from the Triumph T140 TSX such as the abbreviated rear albeit in stainless steel and panels with a TSX-styled TSS affixed.

These replaced the side panels which had extended to cover the Bing linkages on the USA export models. A ‘ducktail’ seat unit was above the shortened rear of the projected 1983–1984 civilian and rear set footrests, brake and shift mechanisms fitted. TSS AV retained the standard footrest/control as well as conventional cycle over the ducktail and TSX parts. Due to the clearance limitations caused by the jogging about its rubber within the Enforcer frame, the Amal Mk2 carburretors instead of were fitted. [ 21 ] [ 22 ]

Triumph TSX
Triumph TSX
Triumph TSX
Triumph TSX
Triumph TSX

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