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.jpg) The A9 at the 2012Goodwood Festival of Speed | |||||||||
| Category | Formula One | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Arrows | ||||||||
| Designer | Dave Wass | ||||||||
| Predecessor | A8 | ||||||||
| Successor | A10 | ||||||||
| Technical specifications | |||||||||
| Chassis | Carbon fibremonocoque | ||||||||
| Axle track | Front: 1,854 mm (73.0 in) Rear: 1,676 mm (66.0 in) | ||||||||
| Wheelbase | 2,921 mm (115.0 in) | ||||||||
| Engine | BMW M12/13, 1,500 cc (91.5 cu in),inline-four,turbocharged,mid-engine,longitudinally mounted | ||||||||
| Transmission | Arrows /Hewland 6-speedmanual | ||||||||
| Weight | 540 kg (1,190 lb) | ||||||||
| Fuel | Castrol | ||||||||
| Tyres | Goodyear | ||||||||
| Competition history | |||||||||
| Notable entrants | BarclayArrowsBMW | ||||||||
| Notable drivers | 17. Christian Danner18.  Thierry Boutsen | ||||||||
| Debut | 1986 German Grand Prix | ||||||||
| Last event | 1986 Austrian Grand Prix | ||||||||
| |||||||||
| Constructors' Championships | 0 | ||||||||
| Drivers' Championships | 0 | ||||||||
TheArrows A9 was aFormula One car which theArrows team used to compete in the1986 Formula One season. It was powered by the massively-powerfulBMW M12/13 turbochargedinline-four engine. Unlike the BMWs used by theBrabham andBenetton teams whose engines were maintained and updated regularly byBMW, the Arrows engines were maintained by Swiss engine guru Heini Mader and were rated as the least powerful of the BMW runners.
The A9 was supposed to replace the ageingA8 car, but it turned out to be worse than its predecessor. The new car was the team's first carbon composite chassis, built byBritish Aerospace but delays in manufacture caused the car to be late. Its lack of performance caused Dave Wass to quit Arrows.[1]
Because of this, the team stuck with the A8 fromthe previous season. As a result, the A9 only saw action at three races, at theGerman andAustrian Grands Prix, in the hands ofThierry Boutsen, in both of these races the car failed to finish after its turbocharger failed.
At theHungarian Grand Prix teammateChristian Danner raced the A9 but retired after 7 laps with rear suspension failure.
The Arrows team found that the rear end was the major problem with the A9 and for a couple of races it was run with its new front end joined to the rear end of the A8. While this actually improved the performance of the new car, Arrows soon returned to running the older A8 for the balance of the season.[2]
Arrows finished the season in 10th place, with a single point, earned by Boutsen's teammateChristian Danner in Austria while driving the A8.
(key)
| Year | Entrant | Engine | Tyres | Drivers | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | Points | WCC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1986 | BarclayArrowsBMW | BMW M12S4 (t/c) | G | BRA | ESP | SMR | MON | BEL | CAN | DET | FRA | GBR | GER | HUN | AUT | ITA | POR | MEX | AUS | 1* | 10th | |
| Thierry Boutsen | Ret | Ret | ||||||||||||||||||||
| Christian Danner | Ret |
* scored with theArrows A8
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