March CG891 is a race car developed under the leadership of Adrian Newey in March Engineering to compete in the 1989 Formula 1 Championship . The car was an evolution of the previous team car - March 881 . The riders of the Leyton House March Racing Team in 1989 were Italian Ivan Capelli and Brazilian Mauricio Guzhelmin .
| March CG891 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
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| Category | Formula 1 | ||||||||
| Developer | Adrian newey | ||||||||
| Constructor | March Engineering | ||||||||
| Predecessor | March 881 | ||||||||
| Successor | Leyton House CG901 | ||||||||
| Specifications | |||||||||
| Chassis | carbon monocoque | ||||||||
| Suspension (front) | |||||||||
| Suspension (rear) | like front | ||||||||
| Engine | Judd EV 3,500 cm³ V8 , 72 ° atmospheric mid-engine layout , located longitudinally | ||||||||
| Transmission | 6 speed manual | ||||||||
| Fuel | BP | ||||||||
| Tires | Goodyear | ||||||||
| Performance history | |||||||||
| Teams | Leyton House March Racing Team | ||||||||
| Pilots | fifteen.  Mauricio Guzhelmin16.  Ivan Capelli | ||||||||
| Debut | Monaco 1989 | ||||||||
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| Constructors Cup | 12th (4 points) | ||||||||
Content
- 1 Design
- Season 2, 1989
- 3 Performance
- 4 notes
- 5 Literature
Design
The development of the machine for the next year began during the 1988 season [1] . One of the challenges in creating the March CG891 for Adrian Newey was to shift the center of gravity of the car, which would allow better cornering. In addition, compared to 881, the chassis has become even narrower and more V-shaped. The pilots of the team were asked to make the cockpit longer, since in 881 they had to bend their knees strongly. After purging the model of the car in a wind tunnel, the downforce indicator improved compared to last year’s car [2] .
The team was pleased with the design of the CG891, however, the machine had problems with reliability. Due to the shift of the gearbox to the front axle for access to the gears, it was necessary to divide the transmission case into two parts: front and rear. It became clear that this decision was wrong - cracks appeared around the crankcase. Also, the new Judd EV engine was not as powerful as expected. The installation of the fuel pump on the rear baffle of the engine was also an erroneous constructive solution, due to which the baffle was deformed and pressed on the pump under load from the motor mount. Due to problems and shortcomings, the team did not have time to prepare a new car for the beginning of the 1989 season and was forced to use last year's March 881 in the first two stages [3] .
1989 Season
The debut of March CG891 took place in Monaco . Guzhelmin came down due to engine problems, and Capelli came 11th. In Mexico, Capelli was well qualified and started from 4 places on the starting grid [4] . According to Newey, this showed the potential of the car [3] . However, the race for the team was a failure. To improve aerodynamics, the team brought the brake drive through the wishbone, but the weld inside the suspension arm damaged the drive, causing brake fluid to leak [3] . The CG891 was unstable and difficult to control, while riders complained about the balance of the car [3] . The team tried to identify the cause of the difficulties, however, after conducting deflation and torsion tests, it did not reveal the problem. The geometry of the CG891 suspension was similar to that used on the 881 and on the track it behaved like in a wind tunnel. The weight distribution was the same as in the calculations [5] .
In the USA, both cars left the race due to breakdowns; in Canada, the March pilots again failed to get to the finish line, and failure continued in France . In the UK, technology again fails pilots and they will not finish, the German stage is also a failure, in Hungary, failures continue. Finally, in Belgium, Guzhelmin manages to get to the finish line, moreover, right behind the spectacle zone, to 7th place; Capelli is the 12th.
By the end of the season, the team managed to get at least some reliability from the car, but it was still not clear why it remained uncompetitive [5] . In the last third of the season Guzhelmin finished racing in Portugal , Japan and Australia , but could not fight for points. With Capelli, things were even worse: in none of the remaining races, he could not finish.
To work on the machine next year, Newey wanted to figure out the reasons for the failures of the CG891 [6] . Based on the assumption that the team built the car too sensitive to changes in ride height , it was concluded that if you reduce the sensitivity of the car, the team will have more chances to get the chassis behavior on the track, as well as according to the results of tests in the wind tunnel. According to the test results, it was clear that the problem remained and Leyton House CG901 suffers from the same diseases as March CG891 [7] .
The cause of the design errors of the CG891 and then the CG901 was covered in a wind tunnel in Southampton . By 1990, only Leyton House Racing had used this pipe to purge its models. Due to the deformation of the elements of the wind tunnel, she unloaded the diffuser and led the team to erroneous calculations and the development of a more aggressive form that did not work on the tracks. Such an aggressive approach was due to the movement of the gearbox, in 881, located on the rear axle, and on the CG891 and CG901 - on the front [8] .
Performance Results
| Legend to the table | ||||||||||||||||||||||||||||||||||||||||||||||||
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The table lists the results of all Formula 1 Grand Prix in which the pilot participated. The rows of the table are the seasons, the columns are the stages of the Grand Prix. In each cell, the abbreviated name of the stage and the result of the rider, additionally indicated in color, are indicated. Decoding of symbols and colors is presented in the table below.
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| Year | Team | Motor | Tires | Pilot | one | 2 | 3 | four | 5 | 6 | 7 | 8 | 9 | 10 | eleven | 12 | 13 | fourteen | fifteen | 16 | Glasses | QC | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1989 | Leyton House March Racing Team | Judd EV 3.5 V8 | G | Bra | SMR | MON | Mex | USA | CAN | Fra | GBR | Ger | Hun | Bel | ITA | Por | Esp | Jpn | Aus | 4 * | 12th | ||
| Guzhelmin | Gathering | NKV | DSC | Gathering | NKL | Gathering | Gathering | Gathering | 7 | Gathering | 10 | Gathering | 7 | 7 | |||||||||
| Capelli | eleven | Gathering | Gathering | Gathering | Gathering | Gathering | Gathering | Gathering | 12 | Gathering | Gathering | Gathering | Gathering | Gathering | |||||||||
Source: [9] | |||||||||||||||||||||||
* All 4 points of the 1989 season were won at March 881.
Notes
- ↑ Newey, 2019 , p. 114.
- ↑ Newey, 2019 , p. 116.
- ↑ 1 2 3 4 Newey, 2019 , p. 118.
- ↑ Mexican Grand Prix - STARTING GRID . Formula One World Championship Limited . Circulation date May 19, 2019.
- ↑ 1 2 Newey, 2019 , p. 119.
- ↑ Newey, 2019 , p. 120.
- ↑ Newey, 2019 , p. 121.
- ↑ Newey, 2019 , p. 122–123.
- ↑ Small, Steve. The Guinness Complete Grand Prix Who's Who. - Guinness, 1994 .-- P. 93, 169. - ISBN 0851127029 .
Literature
- Adrian Newey . How to build 881 // How to build a car. - Moscow: Eksmo, 2019 .-- S. 99–126. - 352 p. - ISBN 978-5-04-093735-6 .