Audi urquattro Rally Car Transmission
Introduction
The Audi urquattro was a rally car that was produced by Audi from 1980 to 1986. It was the first four-wheel drive rally car to win a World Rally Championship event, and it won a total of 23 WRC events. The urquattro was powered by a turbocharged 2.1-liter inline-5 engine, and it had a five-speed manual transmission.
Transmission
The transmission in the Audi urquattro was a five-speed manual transmission with a dog-leg first gear. This type of transmission is often used in rally cars because it allows for quick and precise gear changes. The dog-leg first gear is positioned to the left and down from the second gear, which makes it easier to find and engage when the driver is shifting quickly.
The transmission in the urquattro was also equipped with a limited-slip differential, which helped to improve traction on slippery surfaces and off-road courses. The differential allowed the wheels on the same axle to rotate at different speeds, which prevented them from spinning and losing traction.
Gear Ratios
The gear ratios in the Audi urquattro transmission were as follows:
* 1st gear: 3.667:1
* 2nd gear: 2.267:1
* 3rd gear: 1.667:1
* 4th gear: 1.267:1
* 5th gear: 0.944:1
The first gear was very low, which allowed the car to accelerate quickly from a standing start. The second and third gears were also relatively low, which allowed the car to climb hills and negotiate rough terrain. The fourth and fifth gears were taller, which allowed the car to reach higher speeds on the straightaways.
Shifting
The Audi urquattro had a short-throw shifter, which allowed the driver to shift gears quickly and easily. The shifter was also located close to the steering wheel, which made it easy for the driver to reach.
The driver would typically shift gears by using the clutch pedal and the gear lever. However, the urquattro was also equipped with a “lift-off” overboost system, which allowed the driver to shift gears without using the clutch. This system would automatically disengage the clutch when the driver lifted off the gas pedal, and it would re-engage the clutch when the driver shifted gears.
Maintenance
The Audi urquattro transmission required regular maintenance to keep it in good working order. This maintenance included:
* Checking the fluid level and condition
* Changing the fluid every 30,000 miles
* Replacing the clutch every 60,000 miles
* Replacing the differential fluid every 50,000 miles
By following these maintenance guidelines, the driver could help to ensure that the transmission in their Audi urquattro would last for many years to come.
Conclusion
The Audi urquattro was a legendary rally car, and its transmission was a key part of its success. The transmission was strong, reliable, and easy to use, and it helped the urquattro to win numerous WRC events. Today, the urquattro is still considered to be one of the greatest rally cars ever built.
