Driven by Jacques Laffite, the car won the first two races of the 1979 season and scored consistently.[2] The Ligiers stayed in contention throughout the season, with Patrick Depailler winning a further race in Spain. The team eventually finished third behind Ferrari and Williams in the constructors' championship. Depailler was injured halfway through the season in a hang-gliding accident and was replaced by Jacky Ickx, but he struggled to keep pace with the car and his teammate and left at the end of the season, having scored only a handful of points.
However, the car soon proved to have problems, starting at the fourth race of the season at Long Beach in the United States. The car was in fact so efficient at producing downforce that the aluminium chassis simply could not handle the amount of downforce it was producing. As a result, the chassis began to flex and the skirts would then be lifted off the ground, ruining the ground effect suction. This was an issue that hampered the team throughout the season, and it could not be solved in time for Laffite to properly challenge the Ferraris of Jody Scheckter and Gilles Villeneuve, and later the all-dominant Williams of Alan Jones.
For 1980, the JS11 was updated with improved aerodynamics and better ground effects. The team took on Didier Pironi in place of Depailler. Again the car was fast and competitive, but the Brabham BT49 and the Williams FW07 proved to be the cars to beat, with Alan Jones taking the world championship. Even so, the team still scored two wins, and would surely have taken more but for several suspension and tyre failures in the mid season. Although the chassis flexing issues had been solved, the car was still producing so much downforce that the suspension and wheelhubs were coming under direct loading and therefore stress fractures developed. This was due to the immense pressure exerted on the suspension arms and the wheels by the ground effect, causing them to fail under hard braking. This effectively cost Ligier the chance to fight with Williams and Brabham for both titles.
The team finished second in the constructors' championship in 1980 ahead of Brabham, and the JS11 evolved into the JS17 for 1981. The JS11 was used as a primary test car for Michelin to experiment with their tyres.
In all the JS11 took five wins, seven pole positions and scored 127 points in its career.
Clapetedit
To solve the issues with the increased downforce, Gérard Ducarouge came up with a solution, dubbed the "clapet" (French for "valve"), where in a series of flaps within the venturi tunnels would open up at after a certain amount of pressure. As the solution constituted a movable aerodynamic device, the team did its best to keep the existence of the system a secret. The existence of the system was eventually discovered by F1 technical illustrator Giorgio Piola during the final race of the 1980 season at Watkins Glen. Piola was able to take photographs of the system after one of the two cars entered by Ligier was being repaired after a shunt.[3]
Mediaedit
The JS11 appeared in the toy line and cartoon Transformers as the AutobotMirage. To escape possible royalties and most likely dodge regulations in various countries regarding tobacco livery on toys, the "Gitanes" logo on Laffite's JS11 was changed to "Citanes". In Italy, the logo was changed furthermore to "Ligier", which was also the character's Japanese name.
Referencesedit
Wikimedia Commons has media related to Ligier JS11.
^Mark Hughes (January 2004). "The Invisible Advantage". Motor Sport Magazine. Haymarket Magazines Ltd. p. 62-68. Retrieved November 25, 2019.
April 26, 2024
ligier, js11, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, june, 2018, l. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Ligier JS11 news newspapers books scholar JSTOR June 2018 Learn how and when to remove this template message The Ligier JS11 was a ground effect Formula One car designed by Gerard Ducarouge It was powered by the Ford Cosworth DFV married to a Ligier in house built gearbox It competed in the 1979 and 1980 World Championships and proved to be very competitive Ligier JS11 Ligier JS11 15Jacques Laffite s Ligier JS11 15 in exhibition CategoryFormula OneConstructorLigierDesigner s Gerard Ducarouge Technical Director Michel Beaujon Chief Designer Robert Choulet Head of Aerodynamics PredecessorJS9SuccessorJS17Technical specifications 1 ChassisAluminium monocoqueAxle trackFront 1 738 mm 68 4 in Rear 1 600 mm 63 in Wheelbase2 794 mm 110 0 in EngineFord Cosworth DFV 2 993 cc 182 6 cu in 60 V8 NA mid engine longitudinally mountedTransmissionHewland FGA 400 6 speed manualWeight580 kg 1 280 lb FuelShellTyresGoodyearCompetition historyNotable entrantsLigier GitanesNotable driversJacques Laffite 1979 80 Patrick Depailler 1979 Jacky Ickx 1979 Didier Pironi 1980 Debut1979 Argentine Grand PrixFirst win1979 Argentine Grand PrixLast win1980 German Grand PrixLast event1980 United States Grand PrixRacesWinsPolesF Laps29566Constructors Championships0Drivers Championships0 Driven by Jacques Laffite the car won the first two races of the 1979 season and scored consistently 2 The Ligiers stayed in contention throughout the season with Patrick Depailler winning a further race in Spain The team eventually finished third behind Ferrari and Williams in the constructors championship Depailler was injured halfway through the season in a hang gliding accident and was replaced by Jacky Ickx but he struggled to keep pace with the car and his teammate and left at the end of the season having scored only a handful of points However the car soon proved to have problems starting at the fourth race of the season at Long Beach in the United States The car was in fact so efficient at producing downforce that the aluminium chassis simply could not handle the amount of downforce it was producing As a result the chassis began to flex and the skirts would then be lifted off the ground ruining the ground effect suction This was an issue that hampered the team throughout the season and it could not be solved in time for Laffite to properly challenge the Ferraris of Jody Scheckter and Gilles Villeneuve and later the all dominant Williams of Alan Jones Contents 1 JS11 15 2 Clapet 3 Media 4 ReferencesJS11 15 editFor 1980 the JS11 was updated with improved aerodynamics and better ground effects The team took on Didier Pironi in place of Depailler Again the car was fast and competitive but the Brabham BT49 and the Williams FW07 proved to be the cars to beat with Alan Jones taking the world championship Even so the team still scored two wins and would surely have taken more but for several suspension and tyre failures in the mid season Although the chassis flexing issues had been solved the car was still producing so much downforce that the suspension and wheelhubs were coming under direct loading and therefore stress fractures developed This was due to the immense pressure exerted on the suspension arms and the wheels by the ground effect causing them to fail under hard braking This effectively cost Ligier the chance to fight with Williams and Brabham for both titles The team finished second in the constructors championship in 1980 ahead of Brabham and the JS11 evolved into the JS17 for 1981 The JS11 was used as a primary test car for Michelin to experiment with their tyres In all the JS11 took five wins seven pole positions and scored 127 points in its career Clapet editTo solve the issues with the increased downforce Gerard Ducarouge came up with a solution dubbed the clapet French for valve where in a series of flaps within the venturi tunnels would open up at after a certain amount of pressure As the solution constituted a movable aerodynamic device the team did its best to keep the existence of the system a secret The existence of the system was eventually discovered by F1 technical illustrator Giorgio Piola during the final race of the 1980 season at Watkins Glen Piola was able to take photographs of the system after one of the two cars entered by Ligier was being repaired after a shunt 3 Media editThe JS11 appeared in the toy line and cartoon Transformers as the Autobot Mirage To escape possible royalties and most likely dodge regulations in various countries regarding tobacco livery on toys the Gitanes logo on Laffite s JS11 was changed to Citanes In Italy the logo was changed furthermore to Ligier which was also the character s Japanese name References edit nbsp Wikimedia Commons has media related to Ligier JS11 Ligier JS11 StatsF1 The Observer page 32 Sunday 4 February 1979 Mark Hughes January 2004 The Invisible Advantage Motor Sport Magazine Haymarket Magazines Ltd p 62 68 Retrieved November 25 2019 Retrieved from https en wikipedia org w index php title Ligier JS11 amp oldid 1191664149, wikipedia, wiki, book, books, library,
