Coloni C4

**Coloni C4**
	Coloni C4
Constructor:	Coloni
Designer:	Christian Vanderpleyn
Predecessor:	Coloni C3C
Technical specifications
Chassis:	plastic
Wheelbase:	2850 mm
Weight:	530 kg
Tires:	Goodyear
statistics
Driver:	Pedro Chaves Naoki Hattori;
World Cup points:	-
Podiums:	-
Leadership laps:	- over 0 km

The Coloni C4 in a non-original paint job during private test drives in 2001

The Coloni C4 was a Formula 1 racing car from the Italian Coloni team , which was entered for 15 Grand Prix in 1991 . It was the most unsuccessful vehicle of the year as it did not take part in any races due to regular non-qualifications. In 1992 , the Andrea Moda Formula team reported him under the name Coloni C4B for two races; but this year too, no participation in the race could be achieved.

The technology

The Coloni C4 was a further development of the Coloni C3 designed by Christian Vanderpleyn in 1989 . It was based on the C3C model, which was temporarily used in 1990, and took over its chassis and suspension components. The body of the vehicle was very similar to that of the C3C; However, individual details such as the shape of the side pods and the air inlet above the driver's head had been slightly revised. Since Coloni no longer had its own development department for financial reasons, this work was carried out by students at the University of Perugia who had dealt with the modification of the Coloni as part of a study project. It was powered by a Cosworth DFR engine, which was prepared by Langford & Peck by the fourth race of the season and then by Hart Racing Engines .

Coloni only made one copy of the C4. In the second half of the 1991 season, the team only had a single engine.

The races

Formula 1 world championship

Coloni reported the C4 to 15 grand prizes in the 1991 season. The driver was initially Pedro Matos Chaves ; for the last two races of the year he was replaced by Naoki Hattori . Both drivers had no experience in Formula 1. The team was subject to pre-qualification throughout the season. Chaves and Hattori regularly failed in the pre-qualification, so that not a single race participation could be achieved. At the Portuguese Grand Prix - the Chaves' home race - the team could not even take part in the pre-qualification because the only engine suffered a defect while warming up in the pits.

Bologna Sprint

After the last race of the season, the Coloni C4 appeared in December 1991 at the Bologna Sprint , a competition held as part of the Bologna Motor Show. Here six drivers competed against each other in mostly Italian cars in short sprint races. The C4 was registered by the Coloni-Andrea Moda Formula team and, apart from the now black paint, was unchanged. The driver of the C4 was Antonio Tamburini . Tamburini prevailed in the first sprint against Gianni Morbidelli in the Minardi M191 , but failed in the semifinals to Johnny Herbert , who fielded a Lotus 102 with a Judd engine.

The Coloni C4B

At the end of 1991, Italian shoe manufacturer Andrea Sassetti took over parts of the Coloni team, including the technical material and the Coloni C4. In the 1992 season he ran his own Formula 1 team under the name Andrea Moda Formula. For the first race of the year he registered the Coloni C4B, a version of the C4 that was heavily modified in the area of the rear of the vehicle, which was to be driven by Enrico Bertaggia and Alex Caffi . However, the team was excluded from participating in the first Grand Prix of 1992, so that the C4B did not even take part in the pre-qualification. At the Brazilian Grand Prix , Andrea Moda replaced the Coloni C4B with the new Andrea Moda S921 designed by Simtek .

In the 1990s the car was converted back to the Cosworth engine. It changed hands several times; occasionally it was used for private test drives.

Race results

driver	No.	1	2	3	4th	5	6th	7th	8th	9	10	11	12	13	15th	16	Points	rank
1991 Formula 1 season																	0	-
Portugal P. Chaves	31	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ	DNPQ
Japan N. Hattori	31														DNPQ	DNPQ

Legend
colour	abbreviation	meaning
gold	-	victory
silver	-	2nd place
bronze	-	3rd place
green	-	Placement in the points
blue	-	Classified outside the point ranks
violet	DNF	Race not finished (did not finish)
violet	NC	not classified
red	DNQ	did not qualify
red	DNPQ	failed in pre-qualification (did not pre-qualify)
black	DSQ	disqualified
White	DNS	not at the start (did not start)
White	WD	withdrawn
Light Blue	PO	only participated in the training (practiced only)
Light Blue	TD	Friday test driver
without	DNP	did not participate in the training (did not practice)
	INJ	injured or sick
	EX	excluded
	DNA	did not arrive
	C.	Race canceled
		no participation in the World Cup
other	^P / bold	Pole position
	_SR / italic	Fastest race lap
	*	not at the finish, but counted due to the distance covered
	()	Streak results
	underlined	Leader in the overall standings

literature

Patrice Burchkalter, Jean-Francois Galeron: Tout sur la Formule 1 1991 , Surrèsnes 1991, ISBN 2-87636-067-5
Buchkalter, Patrice and Galeron, Jean Francois: Formula 1 - a complete guide to 1992 , Surrèsnes (Taillandrier) 1992, ISBN 2-87636-107-8
Adriano Cimarosti: The Century of Racing , Stuttgart 1997, ISBN 3-613-01848-9
Henry, Alan: Autocourse 1992/93 , London 1992 (Hazleton Securities Ltd.), ISBN 0-905138-96-1 .
David Hodges: A – Z of Grand Prix Cars 1906–2001 , 2001 (Crowood Press), ISBN 1-86126-339-2 (English)
David Hodges: Racing Cars from A – Z after 1945 , Stuttgart 1993, ISBN 3-613-01477-7
Pierre Ménard: La Grande Encyclopédie de la Formule 1 , 2nd edition, St. Sulpice, 2000, ISBN 2-940125-45-7 (French)

Individual evidence

↑ Two chassis were about 30 kg lighter each.
^ Hodges: Racing Cars from A – Z after 1945 , p. 58.
^ Hodges: A – Z of Grand Prix Cars 1906–2001 , p. 69.
↑ Burchkalter, Galoron: Tout sur la Formule 1 , 1991, p. 114 ff.
^ History of the Cosworth Formula 1 engine on the website www.research-racing.de (accessed on February 15, 2011).
↑ Motorsport aktuell, issue 35/1992.
↑ Results of the Bologna Sprint 1991 on the website www.silhouet.com (accessed on May 28, 2014).

[1] Two chassis were about 30 kg lighter each.

[2] Hodges: Racing Cars from A – Z after 1945 , p. 58.

[3] Hodges: A – Z of Grand Prix Cars 1906–2001 , p. 69.

[4] Burchkalter, Galoron: Tout sur la Formule 1 , 1991, p. 114 ff.

[5] History of the Cosworth Formula 1 engine on the website www.research-racing.de (accessed on February 15, 2011).

[6] Motorsport aktuell, issue 35/1992.

[7] Results of the Bologna Sprint 1991 on the website www.silhouet.com (accessed on May 28, 2014).