Formula TT

{{see also|Isle of Man TT#TT racing (1960 on)}}

From 1949 to 1976 the Isle of Man TT was part of the Motorcycle Grand Prix World Championship and was the home of the British Grand Prix. The event came under increasing scrutiny due to safety concerns despite efforts by the ACU to retain its world championship status.{{Citation |first1=Dennis | last1=Noyes |year=1999 |first2= Michael |last2=Scott |title=Motocourse: 50 Years Of Moto Grand Prix |publisher =Hazleton Publishing Ltd |isbn=1-874557-83-7 }} When Italian rider Gilberto Parlotti was killed during the 1972 TT, his close friend and the reigning world champion Giacomo Agostini, announced that he would never again race on the Isle of Man. More riders joined Agostini's boycott and by the 1976 season, only a handful of serious Grand Prix riders were among the entrants. Shortly after the 1976 TT, the FIM made the long-anticipated announcement that the TT, once the most prestigious race on the Grand Prix calendar, was stripped of its world championship status. The Grand Prix action was moved to the UK with the 1977 British Grand Prix being held at Silverstone.

The race authorities of the Isle of Man TT worked with Auto Cycle Union to set up a new formula that would include racing on the Isle of Man. This series was the result of that collaboration.[http://www.iomtt.com/TT-Database/Events.aspx?meet_code=TT77%20%20&era=4 TT-Database: Meetings: Meetings 1971 - 1990TT 1977], [http://www.iomtt.com/TT-Database.aspx The official Isle of Man TT 2008 website], accessed 4 June 2004

For the first two years all three formula were run as part of the Isle of Man TT:

• 1977 One event: Tourist Trophy, Isle of Man
• 1978 One event: Tourist Trophy, Isle of Man

In 1979 a second race was added:

• 1979 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (Northern Ireland)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201979.htm Championnat du Monde - TT Formula 1979]
• 1980 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (Northern Ireland)
• 1981 Two events: Tourist Trophy, Isle of Man; Ulster Grand Prix, Dundrod (Northern Ireland)

For the start of the 1982 season Formula III was dropped and the number of circuits was increased:

• 1982 Three events: Tourist Trophy, Isle of Man, Vila Real, Portugal; Ulster Grand Prix, Dundrod (Northern Ireland)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201982.htm Championnat du Monde - TT Formula 1982]
• 1983 Four events: Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands); Ulster Grand Prix, Dundrod (Northern Ireland); and TTF2, Assen (second meeting at the circuit)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201983.htm Championnat du Monde - TT Formula 1983]
• 1984 Six events: TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands), TTF1-TTF2, Vila Real (Portugal); TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland); TTF2, Brno (Czechoslovakia);TTF1, Zolder (Belgium),[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201984.htm Championnat du Monde - TT Formula 1984]
• 1985 Six events: TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands); TTF1-TTF2, Vila Real (Portugal); TTF1-TTF2, Montjuich (Spain); TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland); TTF1, Hockenheim (Germany)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201985.htm Championnat du Monde - TT Formula 1985]
• 1986, Eight events: TTF1, San Marino motorcycle Grand Prix, Misano (Italy); TTF1, Hockenheim (Germany); TTF1-TTF2, Tourist Trophy, Isle of Man; TTF1, Dutch TT - Assen (Netherlands); TTF1-TTF2, Jerez (Spain); TTF1, Vila Real (Portugal); (TTF1) Imatra (Finland); and TTF1-TTF2, Ulster GP, Dundrod (Northern Ireland)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201986.htm Championnat du Monde - TT Formula 1986]

For the remaining four seasons only Formula I races were run:

• 1987 Seven events: Misano (Italy); Hungaroring (Hungary); Tourist Trophy; Isle of Man, Dutch TT - Assen (Netherlands); Sugo (Japan); Hockenheim (Germany); and Donington Park (England).[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201987.htm Championnat du Monde - TT Formula 1987]
• 1988, Eight events: Sugo (Japan); Tourist Trophy, Isle of Man; Dutch TT - Assen (Netherlands); Vila Real (Portugal); Kouvola (Finland); Dundrod (Northern Ireland); Pergusa (Italy); and Donington Park (England)[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201988.htm Championnat du Monde - TT Formula 1988]
• 1989, six events: Sugo (Japan); Tourist Trophy, Isle of Man; Dutch TT - Assen (Netherlands); Vila Real (Portugal); Kouvola (Finland); and Dundrod (Northern Ireland).[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201989.htm Championnat du Monde - TT Formula 1989]
• 1990, five events: Sugo (Japan); Tourist Trophy, Isle of Man; Vila Real (Portugal); Kouvola (Finland); and Dundrod (Northern Ireland).[http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%201990.htm Championnat du Monde - TT Formula 1990]

In 1988 a rival series called the Superbike World Championship started and as it proved popular and commercially successful, it was decided to end the Formula TT at the end of the 1990 season.

The TT Formula was divided into three categories:

• Formula I - four-stroke from 600 to 1000 cc (reduced to 750 cc since 1984) and two-stroke 350 to 500 cc
• Formula II - four-stroke from 400 to 600 cc and two-stroke 250 to 350 cc
• Formula III - four-stroke from 200 to 400 cc and two-stroke 125 to 250 cc

{{reflist}}

{{Commons category|Formula TT}}

• [http://www.touristtrophy.imm/ Unofficial website of the Tourist Trophy & Road Race Portal Road Race Supporters]{{Dead link|date=December 2019 |bot=InternetArchiveBot |fix-attempted=yes }}
• [http://www.iomtt.com/ Official website of the Tourist Trophy]
• [http://racingmemo.free.fr/M%20TT%20FORMULA/TT%20FORMULA%200.htm Championnat du Monde - TT Formula] (French)

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Formula TT

Formula TT

Formula TT