Getrag F28/6 transmission

Last updated

The Getrag F28/6 manual transmission was built by Getrag and fitted to the C20LET 2.0L Turbo Opel Calibra.

Manual transmission type of transmission used in motor vehicle applications

A manual transmission, also known as a manual gearbox, a standard transmission or colloquially in some countries as a stick shift, is a type of transmission used in motor vehicle applications. It uses a driver-operated clutch, usually engaged and disengaged by a foot pedal or hand lever, for regulating torque transfer from the engine to the transmission; and a gear selector that can be operated by hand or foot.

Opel Calibra car model manufactured by Opel

The Opel Calibra is a coupé, engineered and produced by the German automaker Opel between 1989 and 1997. In the United Kingdom, where it remained on sale until 1999, it was marketed under the Vauxhall brand as the Vauxhall Calibra. It was also marketed as the Chevrolet Calibra in South America by Chevrolet, and the Holden Calibra in Australia and New Zealand by Holden.

Contents

Features

The F28/6 in the Calibra was designed to follow a transverse oriented C20LET engine feeding the front wheels with an outlet to facilitate a driveshaft to feed the rear wheels as well. If the four-wheel drive system is disengaged, the gearbox will feed only the front wheels. Conversion kits are readily available from aftermarket suppliers to convert the 6 speed transmission to suit a front-wheel drive vehicle, [1] and this is not an uncommon upgrade (from the 5 speed F20 transmission) amongst owners of the C20XE and X20XEV Calibras.

Four-wheel drive type of drivetrain with four driven wheels

Four-wheel drive, also called 4×4 or 4WD, refers to a two-axled vehicle drivetrain capable of providing torque to all of its wheels simultaneously. It may be full-time or on-demand, and is typically linked via a transfer case providing an additional output drive-shaft and, in many instances, additional gear ranges.

Front-wheel drive

Front-wheel drive (FWD) is a form of engine and transmission layout used in motor vehicles, where the engine drives the front wheels only. Most modern front-wheel-drive vehicles feature a transverse engine, rather than the conventional longitudinal engine arrangement generally found in rear-wheel-drive and four-wheel drive vehicles.

Configuration

It was a 6 speed transmission with the following configuration:

Clutch diameter: 9.0 inches
1st gear ratio: 3.57:1
2nd gear ratio: 2.16:1
3rd gear ratio: 1.45:1
4th gear ratio: 1.10:1
5th gear ratio: 0.89:1
6th gear ratio: 0.74:1
Reverse gear ratio: 3.23:1
Final drive ratio: 3.72:1 (front), 3.70:1 (rear)

Designation

There have been many references to the numbering designation that Opel elected to utilise for gearboxes, one of the more common arguments is that it refers to the ft·lbf torque capacity of the gearbox, in this case being a 380 newton metre s (280  lbf⋅ft ) torque limit. Other arguments include that it is simply related to the engine size (the F28 gearbox was fitted to a 2.0L turbo engine, with the 1.4 multiplier applied for turbocharged vehicles).

Torque tendency of a force to rotate an object

Torque, moment, or moment of force is the rotational equivalent of linear force. The concept originated with the studies of Archimedes on the usage of levers. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. The symbol for torque is typically , the lowercase Greek letter tau. When being referred to as moment of force, it is commonly denoted by M.

Newton metre SI-derived unit for torque

The newton metre is a unit of torque in the SI system. One newton metre is equal to the torque resulting from a force of one newton applied perpendicularly to the end of a moment arm that is one metre long.

A pound-foot (lbf⋅ft) is a unit of torque. One pound-foot is the torque created by one pound of force acting at a perpendicular distance of one foot from a pivot point. Conversely one pound-foot is the moment about an axis that applies one pound-force at a radius of one foot.

The GM transmissions are usually numerically designated in Newton Metres. For example: The 6-speed M32 gearbox is fitted to the Opel/Vauxhall Astra VXR (pre-J model) and has a torque rating of 320 N⋅m (240 lb⋅ft) (hence '32' designation). By no small coincidence the maximum torque output of the Astra VXR engine (Z20LEH) is limited to 320 N⋅m (240 lb⋅ft).

The nomenclature of the Opel transmissions is as follows:

The letter F stands for "F"ront-wheel-drive. Although the F28 is only used in 4WD applications, the base transmission still remains a common FWD gearbox. The number 28 stands for the maximum torque capacity in Nm/10. 28 means that, the transmission is capable to transfer 280 N⋅m (210 lb⋅ft) nominal torque on the input shaft.

Compare: Actual transmission in Opel Signum: F40 means: FWD transmission with torque capacity of 400 N⋅m (300 lb⋅ft).

Related Research Articles

Opel Astra family car manufactured by Opel

The Opel Astra is a compact car/small family car engineered and manufactured by the German automaker Opel since 1991.

Holden Astra automobile

The Holden Astra is a compact car marketed by Holden. Spanning six generations, the original, Australia-only Astra of 1984 was a derivative of the locally produced Nissan Pulsar, as was the 1987 Astra. It was succeeded by the Holden Nova in 1989—another unique-to-Australia model line.

Transmission (mechanics) machine in a power transmission system for controlled application of the power;gearbox,uses gears/gear trains to provide speed,torque conversions from a rotating power source to another device;reduces the higher engine speed to the slower wheel speed

A transmission is a machine in a power transmission system, which provides controlled application of the power. Often the term transmission refers simply to the gearbox that uses gears and gear trains to provide speed and torque conversions from a rotating power source to another device.

Magna PT, known until 2018 as GETRAG, is the world's largest supplier of transmission systems for passenger cars and commercial vehicles. The company was founded on 1 May 1935, in Ludwigsburg, Germany, by Hermann Hagenmeyer; as the Getriebe und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG.

Honda Pilot Honda pilot

The Honda Pilot is a mid-size crossover SUV manufactured by Honda and introduced in 2002.

Direct-shift gearbox electronically controlled dual-clutch multiple-shaft manual gearbox in a transaxle design with full automatic or semi-manual control

A direct-shift gearbox, commonly abbreviated to DSG, is an electronically controlled dual-clutch multiple-shaft gearbox in a transaxle design, with automatic clutch operation and with fully automatic or semi-manual gear selection. The first actual dual-clutch transmissions were derived from Porsche in-house development for their Model 962 racing cars in the 1980s.

Drive wheel

A drive wheel is a wheel of a motor vehicle that transmits force, transforming torque into tractive force from the tires to the road, causing the vehicle to move. The powertrain delivers enough torque to the wheel to overcome stationary forces, resulting in the vehicle moving forwards or backwards.

VXR

VXR was the branding for the high performance trim specification, used since 2004 for models in many of Vauxhall's car range in the United Kingdom. Holden also has used the VXR badge for some of its high-performance cars such as the Astra VXR and Insignia VXR, and currently for the Commodore VXR.

ATTESA is a four-wheel drive system used in some automobiles produced by the Japanese automaker Nissan, including some models under its luxury marque Infiniti.

Getrag 282 transmission

The Getrag 282 transmission was a 5-speed manual transaxle designed by Getrag for Chevrolet. It is sometimes referred to as the Muncie 282 or the Muncie Getrag 282, as the transmission was manufactured by the Muncie, Indiana manual transmission plant. It has been used in various front-wheel drive transverse engine applications including the Chevrolet Cavalier, Pontiac Sunbird, Pontiac Grand Am, Chevrolet Beretta and the Oldsmobile Achieva. It was also used in the mid-engined rear-wheel drive Pontiac Fiero. In its later years, the Getrag 282 was manufactured by New Venture Gear and renamed the NVG T550.

The Getrag F20 5-speed manual transmission was fitted to many vehicles in the European General Motors production line up including for the UK the Vauxhall Astra DOHC 2.0i GTE 16 valve, Vauxhall Cavalier GSi 2000 16 valve DOHC and Vauxhall Calibra 2.0i 16 valve DOHC. Everywhere else under the Opel brand name the Calibra, Vectra A, Astra F & Kadett E. It was a 5 speed transmission with the following specifications:

The Getrag F25 manual transmission was fitted to many vehicles in the European Opel production line-up including the Opel Calibra. It is a five-speed transmission with the following configuration:

The Aisin AW TF-8# SC series is a 6-speed automatic transmission designed for use in transverse engine applications and produced by Aisin Seiki. It is designed to handle a maximum of 440 N⋅m (324.5 ft⋅lbf) of torque. It is built in Anjō, Japan. It is also called the TF-80SC and TF-81SC (AF21).

The F35 is a Saab-designed five-speed manual transmission built in Saab’s Gothenburg, Sweden, powertrain plant. This extensively tested manual transmission was originally introduced in the 1984 Saab 9000, and today it is used in the Saab 9-3 and 9-5, Saturn Ion Redline, Chevrolet Cobalt SS, Chevrolet HHR SS and various GM/Opel transverse engine front-wheel drive applications.

Dual-clutch transmission type of automatic transmission or automated automotive transmission

A dual-clutch transmission (DCT) is an automated automotive transmission, closely related to a manual transmission. It uses two separate clutches for odd and even gear sets. It can fundamentally be described as two separate manual transmissions with their respective clutches contained within one housing, and working as one unit. Although usually operated in a fully automatic mode, many also have the ability to allow the driver to manually shift gears in semi-automatic mode, albeit still using the transmission's electrohydraulics.

Drivetrain Group of components that deliver power to the driving wheels

The drivetrain of a motor vehicle is the group of components that deliver power to the driving wheels. This excludes the engine or motor that generates the power. In contrast, the powertrain is considered to include both the engine or motor and the drivetrain.

References

  1. Courtenay Sport, "Transplants", See Heading F28 to 2WD. Accessed 9 Dec 2006