Shadow DN9

The Shadow DN9 was a Formula One car used by the Shadow team during the 1978 and 1979 Formula One seasons. It is most famous for having been copied by the new Arrows team for their FA1. Arrows, formed by a disgruntled group of Shadow's staffers, were in the end prohibited from using the design.^[2]

Shadow DN9

Category	Formula One
Constructor	Shadow Racing Cars
Designer(s)	Tony Southgate John Baldwin
Predecessor	DN8
Successor	DN11
Technical specifications[1]
Chassis	Aluminium monocoque
Axle track	Front: 1,631 mm (64.2 in) Rear: 1,641 mm (64.6 in)
Wheelbase	2,642 mm (104.0 in)
Engine	Cosworth DFV NA
Transmission	Hewland FGA 400 5-speed manual
Weight	605 kg (1,334 lb)
Fuel	Fina/Valvoline
Tyres	Goodyear
Competition history
Notable entrants	Shadow Racing Cars
Notable drivers	Elio de Angelis Clay Regazzoni Hans-Joachim Stuck
Debut	1978 United States Grand Prix West
Races Wins Poles F/Laps 26 0 0 0
Constructors' Championships	0
Drivers' Championships	0

Development

The Shadow DN9 was developed by Tony Southgate, returning to Shadow from Team Lotus. After racing the last three-quarters of the 1978 season, it returned for 1979. A new sponsor (Holland's Samson shag tobacco) necessitated a new paintjob and a series of wind tunnel tests and subsequent aerodynamic improvements were carried out. New side skirts were introduced, helping to lower drag while doubling downforce.^[3]

Racing history

The DN9 in 1978 trim, as raced by Clay Regazzoni

The Shadow DN9 was introduced at the 1978 Long Beach Grand Prix for first driver Hans-Joachim Stuck's use, although he did not start the race. Second driver Clay Regazzoni got the new car for the race after (Monaco).^[4] Hawaiian driver Danny Ongais was also entered twice, by Interscope Racing, but failed pre-qualifying on both occasions.^[1] Ongais also tested at Silverstone, where he went faster than Lammers who was to become Shadow's second driver in 1979.^[5]

A disappointing 1978 meant using drivers of a lower caliber for 1979, with rookie drivers Elio de Angelis and Jan Lammers scoring only once, with de Angelis' surprise fourth place in the car's last race at the rainy 1979 United States Grand Prix. Interscope Racing, the privateer who had twice entered a DN9 in 1978, was the team fielding de Angelis, Shadow's de facto first driver.^[1] The choice of Dutchman Lammers was tied to the Shadows team's main sponsor, the Dutch Samson shag tobacco company.

Complete Formula One World Championship results

(key) (Results in bold indicate pole position; results in italics indicate fastest lap.)

Year	Entrant(s)	Engine(s)	Tyres	Drivers	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	Points	WCC
1978	Shadow Racing Cars	Ford V8	G		ARG	BRA	RSA	USW	MON	BEL	ESP	SWE	FRA	GBR	GER	AUT	NED	ITA	USA	CAN	6*	11th
				Hans-Joachim Stuck				DNS	Ret	Ret	Ret	11	11	5	Ret	Ret	Ret	Ret	Ret	Ret
				Clay Regazzoni					DNQ	Ret	15	5	Ret	Ret	DNQ	NC	DNQ	NC	14	DNQ
	Interscope Racing			Danny Ongais				DNPQ									DNPQ
1979	Shadow Racing Cars	Ford V8	G		ARG	BRA	RSA	USW	ESP	BEL	MON	FRA	GBR	GER	AUT	NED	ITA	CAN	USA		3	10th
				Jan Lammers	Ret	14	Ret	Ret	12	10	DNQ	18	11	10	Ret	Ret	DNQ	9	DNQ
	Interscope Shadow Racing			Elio de Angelis	7	12	Ret	7	Ret	Ret	DNQ	16	12	11	Ret	Ret	Ret	Ret	4

* 2 points scored in 1978 was with the DN8

Notes

1. Stats F1. "Shadow DN9". Retrieved 2 December 2015.{{cite web}}: CS1 maint: numeric names: authors list (link)
2. "CONSTRUCTORS: ARROWS GRAND PRIX". GrandPrix.com. Retrieved 2 December 2015.
3. Lammers, Jan (24 March 1979). "Lammers' Visie". Autovisie (in Dutch). 24 (6). Amersfoort, Netherlands: Arnold van der Wees: 61.
4. Hodges, 2001, p. 210
5. "Danny Ongais Biography". F1 Rejects. Archived from the original on 21 March 2013.

References

• Nye, Doug (1985). Autocourse History of the Grand Prix Car 1966 – 1985. Richmond, Surrey, United Kingdom: Hazelton Publishing. ISBN 0905138376.
• Hodges, David (2001). A – Z of Grand Prix Cars. Ramsbury, Marlborough, Wiltshire: Crowood Press. ISBN 1861263392.