The QBE81G stands as a compact and high-performance 7-speed transaxle gearbox, developed in collaboration with Radical's Engine department (RPE), specifically designed for mid and rear-engined sportscars. With a power rating of up to 450bhp, the QBE81G boasts an ultra-short footprint, strategically placing the mass between the engine and differential to minimize the vehicle's rear polar moment of inertia.
Notable technical features of the QBE81G include 85mm shaft centres, an integral oil pump, and the option of equipping it with Quaife's renowned ATB limited-slip differential (an optional plate-type LSD is also available). This gearbox is optimized to work seamlessly with Quaife's preferred Geartronics semi-automatic pneumatic paddleshift system (not included), with the necessary air cylinder conveniently bolted to the QBE81G's main case.
The QBE81G offers a range of configuration options, including a choice between straight-cut (spur) or helical gear ratios, as well as a selection of compatible bellhousings. It is compatible with various engines, such as the RPE V8 and the four-cylinder Ford Ecoboost engine, providing versatility for different sportscar applications. Additionally, the QBE81G has the potential to be reengineered as a five or six-speed unit with increased torque capability, based on specific interests and requirements.
In summary, the QBE81G by Quaife represents a compact and high-performance transaxle gearbox engineered in collaboration with Radical's Engine department. With its advanced features, including an ultra-short footprint, integral oil pump, and compatibility with Quaife's Geartronics paddleshift system, this gearbox delivers exceptional performance and versatility for mid and rear-engined sportscars. Whether on the track or the road, the QBE81G provides precise gear shifts, optimized power transfer, and enhanced handling characteristics, meeting the demands of discerning sportscar enthusiasts.
Key technical features of the QBE81G seven-speed compact transaxle gearbox include: