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{{More citations needed|date=June 2018}}{{Infobox racing car
The '''Leyton House CG901''' is a Formula One racing car designed by [[Adrian Newey]] for the {{F1|1990}} [[Formula One]] World Championship. Five chassis were built and were powered by the [[Judd (engine)|Judd]] EV 3.5 litre V8 engine. Chassis 001 was subsequently modified mid-season to accommodate the [[Ilmor]] 2175A engine the team used in 1991. The drivers for 1990 were the highly rated [[Ivan Capelli]] and [[Mauricio Gugelmin]].
| Image = [[File:Leyton House CG901 Formula One, 1990 - Collings Foundation - Massachusetts - DSC07049.jpg|220px|Leyton House CG901]]
| Category = [[Formula One]]
| Car_name = Leyton House CG901
| Constructor = [[Leyton House Racing]]
| Team = [[Leyton House Racing]]
| Designer = [[Adrian Newey]]
| Predecessor = [[March CG891]]
| Successor = [[Leyton House CG911]]
| Drivers = 15. {{flagicon|BRA}} [[Maurício Gugelmin]]<br>16. {{flagicon|ITA}} [[Ivan Capelli]]
| Technical ref =<ref>{{cite web|url=http://www.ultimatecarpage.com/car/4211/Leyton-House-CG901-Judd.html |title=1990 Leyton House CG901 Judd - Images, Specifications and Information |publisher=Ultimatecarpage.com |date=2009-10-05 |accessdate=2010-08-23}}</ref>
| Chassis = [[Carbon fiber|Carbon fibre]] [[monocoque]]
| Front suspension = Double wishbones, push-rod and rocker actuated coil springs over dampers, anti-roll bar
| Rear suspension = Double wishbones, push-rod and rocker actuated coil springs over dampers, anti-roll bar
| Engine position = [[mid-engine]], [[longitudinal engine|longitudinally mounted]]
| Engine name = [[Judd (engine)#EV|Judd EV]],
| Capacity = {{convert|3496|cc|cuin|1|abbr=on}},
| Turbo/NA = [[Naturally-aspirated engine|NA]]
| Configuration = 76° [[V8 engine|V8]],
| Gearbox name = [[March Engineering|March]]
| Gears = 6 speed
| Type = [[Manual transmission|manual]]
| Differential =
| Tyres = [[Goodyear Tire and Rubber Company|Goodyear]]
| Fuel = [[BP]]
| Debut = [[1990 San Marino Grand Prix]]
| Races = 14
| Cons_champ = 0
| Drivers_champ = 0
| Wins = 0
| Poles = 0
| Fastest_laps = 0
}}


The '''Leyton House CG901''' was a Formula One racing car designed by [[Adrian Newey]] for the {{F1|1990}} [[Formula One]] World Championship. Five chassis were built and were powered by the [[Judd (engine)|Judd]] EV 3.5 litre V8 engine. Chassis 001 was subsequently modified mid-season to accommodate the [[Ilmor]] 2175A engine the team used in 1991. The drivers for 1990 were the highly rated [[Ivan Capelli]] and [[Maurício Gugelmin]]. The CG in the name stood for Cesare Gariboldi, a March Leyton team manager who was killed in a road accident in 1989.<ref name=smith>{{cite journal|last1=Smith|first1=Damien|title=Hand of the Creator|journal=[[Road & Track]]|date=February–March 2013|volume=64|issue=6|pages=64–69}}</ref>
The CG901 appeared in two distinct specifications, the early season A spec and the mid to late season B spec. The change was largely an aerodynamic update to correct design errors incurred as a result of erroneous data from the team's wind tunnel. The basis for the car was an evolution of the CG891 of 1989 but with even less compromise from an aerodynamic stand point. This approach caused the car to be extremely sensitive to pitch and roll necessitating a very stiff set-up.


== Design ==
The "tub" is a monocoque type of carbon fibre construction encapsulating the driver, front suspension dampers and fuel cell. The cockpit area was reputed to be very small and cramped, in fact on the lower portion of the tub two external blisters are visible to allow the driver's heels to fit into the narrow space. The dampers were located in front of the driver's feet and were of 2 way adjustable Koni type. The dampers were actuated via rockers by pushrods from the front uprights. The detachable nose section incorporates the front wing which was bolted from the underside and sat proud of the nose itself.
The CG901 appeared in two distinct specifications, the early season A spec and the mid to late season B spec. The change was largely an aerodynamic update to correct design errors incurred as a result of erroneous data from the team's wind tunnel.<ref>{{Cite web |last=Wilkins |first=Adam |date=August 21, 2019 |title=The Leyton House CG901 Formula 1 car catapulted Adrian Newey's career |url=https://www.goodwood.com/grr/race/historic/2019/8/the-leyton-house-cg901-formula-1-car-catapulted-adrian-neweys-career/ |access-date=2022-05-04 |website=www.goodwood.com}}</ref> The basis for the car was an evolution of the CG891 of 1989 but with even less compromise from an aerodynamic stand point. This approach caused the car to be extremely sensitive to pitch and roll necessitating a very stiff set-up.


The "tub" is a monocoque type of carbon fibre construction encapsulating the driver, front suspension dampers and fuel cell. The cockpit area was reputed to be very small and cramped,<ref>{{Cite web |last=Smith |first=Damien |date=2012 |title=Adrian Newey drives his own F1 creations — on track in a Leyton House and Red Bull |url=https://www.motorsportmagazine.com/archive/article/december-2012/49/driven-by-design |access-date=2022-05-04 |website=Motor Sport Magazine |language=en-GB}}</ref> in fact on the lower portion of the tub two external blisters are visible to allow the driver's heels to fit into the narrow space. The dampers were located in front of the driver's feet and were of 2 way adjustable Koni type. The dampers were actuated via rockers by pushrods from the front uprights. The detachable nose section incorporates the front wing which was bolted from the underside and sat proud of the nose itself.
The engine is attached to the tub via studs and nuts and acted as a fully stressed member. The cooling system was configured in a similar manner to that of the Indycars Newey had designed prior to his involvement with Formula One. The water system comprised of two large coolers that fed through a water oil heat exchanger located in the right hand sidepod.

The engine is attached to the tub via studs and nuts and acted as a fully stressed member. The cooling system was configured in a similar manner to that of the Indycars Newey had designed prior to his involvement with Formula One. The water system is composed of two large coolers that fed through a water oil heat exchanger in the right hand sidepod.


The gearbox was attached to the engine through a bell housing that formed the lower part of the engine oil tank, the upper part being a sculpted carbon fibre affair. Of six speed longitudinal configuration the gearbox differed to most conventional layouts in that the selector mechanism was located at the front of the assembly. The rear suspension like the front utilised pushrods compressing the horizontally mounted Koni dampers via rockers.
The gearbox was attached to the engine through a bell housing that formed the lower part of the engine oil tank, the upper part being a sculpted carbon fibre affair. Of six speed longitudinal configuration the gearbox differed to most conventional layouts in that the selector mechanism was located at the front of the assembly. The rear suspension like the front utilised pushrods compressing the horizontally mounted Koni dampers via rockers.


The most striking feature of the CG901 was its aerodynamics, it was if nothing else a very beautiful car. The B specification update included a new design of floor building on the established practice of an exhaust fed diffuser. The engine cover was extremely small and very narrow following the curves of the tub.
The most striking feature of the CG901 was its aerodynamics, it was if nothing else a very beautiful car. The B specification update included a new design of floor building on the established practice of an exhaust fed diffuser. The engine cover was extremely small and very narrow following the curves of the tub.


The electronics package was principally supplied by Zytec Engineering however the car did utilize a Marelli ignition package for at least part of the season.
The electronics package was principally supplied by [[Zytek]] Engineering however the car did utilize a Marelli ignition package for at least part of the season.


== Racing history ==
The performance of the CG901 was very poor before the introduction of the B specification car at the [[1990 French Grand Prix|French Grand Prix]] of 1990. In both France and [[1990 British Grand Prix|Britain]] both Capelli and Gugelmin showed dominant form bewildering their much better-funded rivals. For the remainder of the season performance remained patchy and was plagued with reliability problems.
The performance of the CG901 was very poor before the introduction of the B specification car at the [[1990 French Grand Prix|French Grand Prix]] of 1990. In both France and [[1990 British Grand Prix|Britain]] both Capelli and Gugelmin showed dominant form bewildering their much better-funded rivals. For the remainder of the season performance remained patchy and was plagued with reliability problems.
{{Clear}}


==Complete Formula One results==
==Complete Formula One results==
([[:Template:F1 driver results legend 2|key]])
([[:Template:F1 driver results legend 2|key]])
{| class="wikitable" style="text-align:center; font-size:95%"
{| class="wikitable" style="text-align:center; font-size:95%"
|-
! Year
! Year
! Team
! Team
Line 39: Line 77:
! 15
! 15
! 16
! 16
! Points
! Pts.
! WCC
! WCC
|-
|-
| rowspan="3"| '''[[1990 Formula One season|1990]]'''
| rowspan="3"| {{f1|1990}}
| rowspan="3"| [[Leyton House Racing|Leyton House]]
| rowspan="3"| [[Leyton House Racing]]
| rowspan="3"| [[Judd (engine)|Judd]] EV [[V8 engine|V8]]
| rowspan="3"| [[Judd (engine)#EV|Judd EV]]<br>[[V8 engine|V8]]
| rowspan="3"| {{Goodyear}}
| rowspan="3"| {{Goodyear}}
|
|
|| [[1990 United States Grand Prix|USA]]
| [[1990 United States Grand Prix|USA]]
|| [[1990 Brazilian Grand Prix|BRA]]
| [[1990 Brazilian Grand Prix|BRA]]
|| [[1990 San Marino Grand Prix|SMR]]
| [[1990 San Marino Grand Prix|SMR]]
|| [[1990 Monaco Grand Prix|MON]]
| [[1990 Monaco Grand Prix|MON]]
|| [[1990 Canadian Grand Prix|CAN]]
| [[1990 Canadian Grand Prix|CAN]]
|| [[1990 Mexican Grand Prix|MEX]]
| [[1990 Mexican Grand Prix|MEX]]
|| [[1990 French Grand Prix|FRA]]
| [[1990 French Grand Prix|FRA]]
|| [[1990 British Grand Prix|GBR]]
| [[1990 British Grand Prix|GBR]]
|| [[1990 German Grand Prix|GER]]
| [[1990 German Grand Prix|GER]]
|| [[1990 Hungarian Grand Prix|HUN]]
| [[1990 Hungarian Grand Prix|HUN]]
|| [[1990 Belgian Grand Prix|BEL]]
| [[1990 Belgian Grand Prix|BEL]]
|| [[1990 Italian Grand Prix|ITA]]
| [[1990 Italian Grand Prix|ITA]]
|| [[1990 Portuguese Grand Prix|POR]]
| [[1990 Portuguese Grand Prix|POR]]
|| [[1990 Spanish Grand Prix|ESP]]
| [[1990 Spanish Grand Prix|ESP]]
|| [[1990 Japanese Grand Prix|JPN]]
| [[1990 Japanese Grand Prix|JPN]]
|| [[1990 Australian Grand Prix|AUS]]
| [[1990 Australian Grand Prix|AUS]]
|rowspan="3"|'''7'''
|rowspan="3"|'''7'''
|rowspan="3"|'''7th'''
|rowspan="3"|'''7th'''
|-
|-
| [[Mauricio Gugelmin]]
|align="left"| [[Maurício Gugelmin]]
|style="background:#cfcfff;"| 14
|bgcolor="#CFCFFF" align="center"| <small>14</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#ffffff;"| DNS
|bgcolor="white" align="center"| <small>DNS</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#cfcfff;"| 8
|bgcolor="#CFCFFF" align="center"| <small>8</small>
|style="background:#dfffdf;"| 6
|bgcolor="#DFFFDF" align="center"| <small>6</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#cfcfff;"| 12
|bgcolor="#CFCFFF" align="center"| <small>12</small>
|style="background:#cfcfff;"| 8
|bgcolor="#CFCFFF" align="center"| <small>8</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|-
|-
| [[Ivan Capelli]]
|align="left"| [[Ivan Capelli]]
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#cfcfff;"| 10
|bgcolor="#CFCFFF" align="center"| <small>10</small>
|style="background:#ffcfcf;"| DNQ
|bgcolor="#FFCFCF" align="center"| <small>DNQ</small>
|style="background:#dfdfdf;"| 2
|bgcolor="#DFDFDF" align="center"| <small>2</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#cfcfff;"| 7
|bgcolor="#CFCFFF" align="center"| <small>7</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#cfcfff;"| 7
|bgcolor="#CFCFFF" align="center"| <small>7</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|style="background:#efcfff;"| Ret
|bgcolor="#EFCFFF" align="center"| <small>Ret</small>
|}
|}
{{Clear}}


==References==
{{Navbox
{{Reflist}}
|name = Sauber
|title = {{flagicon|UK}} [[Leyton House Racing]]
|titlestyle = background:turquoise
|list1 =

'''[[Formula One]] cars:''' [[Leyton House CG901|CG901]] [[Leyton House CG911|CG911]] }}


{{Leyton House}}
{{F1 cars 1990}}
{{F1 cars 1990}}


Latest revision as of 19:30, 26 March 2023

Leyton House CG901
Leyton House CG901
CategoryFormula One
ConstructorLeyton House Racing
Designer(s)Adrian Newey
PredecessorMarch CG891
SuccessorLeyton House CG911
Technical specifications[1]
ChassisCarbon fibre monocoque
Suspension (front)Double wishbones, push-rod and rocker actuated coil springs over dampers, anti-roll bar
Suspension (rear)Double wishbones, push-rod and rocker actuated coil springs over dampers, anti-roll bar
EngineJudd EV, 3,496 cc (213.3 cu in), 76° V8, NA mid-engine, longitudinally mounted
TransmissionMarch 6 speed manual
FuelBP
TyresGoodyear
Competition history
Notable entrantsLeyton House Racing
Notable drivers15. Brazil Maurício Gugelmin
16. Italy Ivan Capelli
Debut1990 San Marino Grand Prix
RacesWinsPolesF/Laps
14000
Constructors' Championships0
Drivers' Championships0

The Leyton House CG901 was a Formula One racing car designed by Adrian Newey for the 1990 Formula One World Championship. Five chassis were built and were powered by the Judd EV 3.5 litre V8 engine. Chassis 001 was subsequently modified mid-season to accommodate the Ilmor 2175A engine the team used in 1991. The drivers for 1990 were the highly rated Ivan Capelli and Maurício Gugelmin. The CG in the name stood for Cesare Gariboldi, a March Leyton team manager who was killed in a road accident in 1989.[2]

Design

[edit]

The CG901 appeared in two distinct specifications, the early season A spec and the mid to late season B spec. The change was largely an aerodynamic update to correct design errors incurred as a result of erroneous data from the team's wind tunnel.[3] The basis for the car was an evolution of the CG891 of 1989 but with even less compromise from an aerodynamic stand point. This approach caused the car to be extremely sensitive to pitch and roll necessitating a very stiff set-up.

The "tub" is a monocoque type of carbon fibre construction encapsulating the driver, front suspension dampers and fuel cell. The cockpit area was reputed to be very small and cramped,[4] in fact on the lower portion of the tub two external blisters are visible to allow the driver's heels to fit into the narrow space. The dampers were located in front of the driver's feet and were of 2 way adjustable Koni type. The dampers were actuated via rockers by pushrods from the front uprights. The detachable nose section incorporates the front wing which was bolted from the underside and sat proud of the nose itself.

The engine is attached to the tub via studs and nuts and acted as a fully stressed member. The cooling system was configured in a similar manner to that of the Indycars Newey had designed prior to his involvement with Formula One. The water system is composed of two large coolers that fed through a water oil heat exchanger in the right hand sidepod.

The gearbox was attached to the engine through a bell housing that formed the lower part of the engine oil tank, the upper part being a sculpted carbon fibre affair. Of six speed longitudinal configuration the gearbox differed to most conventional layouts in that the selector mechanism was located at the front of the assembly. The rear suspension like the front utilised pushrods compressing the horizontally mounted Koni dampers via rockers.

The most striking feature of the CG901 was its aerodynamics, it was if nothing else a very beautiful car. The B specification update included a new design of floor building on the established practice of an exhaust fed diffuser. The engine cover was extremely small and very narrow following the curves of the tub.

The electronics package was principally supplied by Zytek Engineering however the car did utilize a Marelli ignition package for at least part of the season.

Racing history

[edit]

The performance of the CG901 was very poor before the introduction of the B specification car at the French Grand Prix of 1990. In both France and Britain both Capelli and Gugelmin showed dominant form bewildering their much better-funded rivals. For the remainder of the season performance remained patchy and was plagued with reliability problems.

Complete Formula One results

[edit]

(key)

Year Team Engine Tyres Drivers 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pts. WCC
1990 Leyton House Racing Judd EV
V8 		G USA BRA SMR MON CAN MEX FRA GBR GER HUN BEL ITA POR ESP JPN AUS 7 7th
Maurício Gugelmin 14 DNQ Ret DNQ DNQ DNQ Ret DNS Ret 8 6 Ret 12 8 Ret Ret
Ivan Capelli Ret DNQ Ret Ret 10 DNQ 2 Ret 7 Ret 7 Ret Ret Ret Ret Ret

References

[edit]
  1. ^ "1990 Leyton House CG901 Judd - Images, Specifications and Information". Ultimatecarpage.com. 2009-10-05. Retrieved 2010-08-23.
  2. ^ Smith, Damien (February–March 2013). "Hand of the Creator". Road & Track. 64 (6): 64–69.
  3. ^ Wilkins, Adam (August 21, 2019). "The Leyton House CG901 Formula 1 car catapulted Adrian Newey's career". www.goodwood.com. Retrieved 2022-05-04.
  4. ^ Smith, Damien (2012). "Adrian Newey drives his own F1 creations — on track in a Leyton House and Red Bull". Motor Sport Magazine. Retrieved 2022-05-04.
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