Delorean Car Transmission: A Detailed Exploration
Introduction
The DeLorean DMC-12 is an iconic sports car known for its striking stainless steel body and starring role in the Back to the Future film trilogy. Beyond its cinematic fame, the DeLorean also features a unique transmission system that has garnered intrigue and discussion among car enthusiasts and automotive historians. This comprehensive post delves into the intricacies of the DeLorean car transmission, providing a thorough understanding of its design, operation, and impact on the vehicle’s performance.
Transmission Design and Development
The DeLorean’s transmission was a result of a collaboration between renowned automotive engineer John DeLorean and renowned transmission specialist ZF Friedrichshafen. The goal was to create a transmission that met the specific performance and handling requirements of the DeLorean DMC-12. The resulting transmission was a five-speed manual unit with a dogleg pattern, where first gear was located in the lower-left corner and fifth gear was directly above it. This non-traditional gear pattern was chosen to optimize gear changes during spirited driving.
Technical Specifications
The DeLorean’s five-speed manual transmission features the following technical specifications:
- Five forward gears and one reverse gear
- Dogleg gear pattern (first gear lower-left, fifth gear directly above)
- Straight-cut gears for improved durability and performance
- Hydraulic clutch for smooth and precise shifting
- High final drive ratio of 3.45:1 for optimal acceleration
Operation and Performance
The DeLorean’s transmission operates in a similar manner to other manual transmissions. The driver selects the desired gear by moving the gear lever into the corresponding position, and the hydraulic clutch is used to engage and disengage the transmission from the engine. The dogleg gear pattern encourages quick and precise gear changes, allowing the driver to optimize acceleration and handling. The straight-cut gears provide a positive and direct feel, enhancing driver engagement and control.
The high final drive ratio of 3.45:1 gives the DeLorean strong acceleration capabilities, enabling it to reach 60 mph (97 km/h) in approximately 8.5 seconds, despite its relatively low horsepower output. However, this setup also results in higher engine RPMs at higher speeds, potentially affecting fuel economy and cabin noise levels.
Unique Features
Beyond its standard five-speed manual configuration, the DeLorean transmission also offered a unique feature called the “overdrive” gear. This additional gear, located below fifth gear in the dogleg pattern, provided a higher gear ratio than fifth gear, reducing engine RPMs and consequently improving fuel economy and reducing cabin noise during highway cruising. The overdrive gear was engaged by lifting the gear lever slightly and pushing it to the right.
Maintenance and Reliability
As with any complex mechanical system, regular maintenance is essential to ensure optimal performance and longevity of the DeLorean transmission. Routine fluid changes, clutch adjustments, and inspection of gears and synchronizers are recommended to keep the transmission operating smoothly. The use of high-quality lubricants and genuine parts is highly encouraged to maintain the integrity and reliability of the transmission.
Conclusion
The DeLorean car transmission is an integral part of the vehicle’s iconic status and driving experience. Its unique design, dogleg gear pattern, and straight-cut gears contribute to the DeLorean’s distinctive performance and handling characteristics. While it may not be the most practical choice for all drivers, the DeLorean’s transmission is a testament to the innovative and performance-oriented engineering that went into the creation of this legendary sports car.
