The ShiftFX EST relies on an APTC+ auto-clutch for launching and anti-stall. An added benefit of the BDC Active Clutch is that it retains the standard clutch lever that has direct connection to the clutch slave cylinder. This technology has seen very limited use in automotive applications, and the BDC Active Clutch is the first commercial motorcycle application for shape-memory alloy. Using a high-tech shape-memory alloy, the BDC Active Clutch is an elegant and unique design that allows electrohydraulic control of the clutch in a unit weighing less than half a kilogram. The ShiftFX EST consists of three main components: A state-of-the-art Active Clutch with isolation valve, which retains the standard clutch lever for operation by the rider at any time a high-speed DC motor and fixed gear reducer that directly rotates the shift drum and a sophisticated transmission control unit (TCU) that can be programmed to provide practically any desired shifting characteristics in either semi-automatic or automatic mode. The components of the Electronic Shift Transmission and their placement on the motorcycle: The Transmission Control Unit (TCU), automatic clutch, rider interface, Active Clutch and gear controller. Applicable to almost any motorcycle, including electric bikes.Programmable for any desired load/speed characteristics.Communicates with ECU via CAN bus for rpm matching, engine braking and incorporation into OEM riding modes.Reduces engine, clutch and transmission wear and abuse.Retains manual clutch lever for emergency braking, aggressive launches or poor traction situations.Semi-automatic mode offers smooth, precise push-button shifting with average shift time of 50 milliseconds.Automatic mode ideal for new riders, with simple rider interface and no stalling.Gear changes are precisely sequenced with engine control and occur in less than 50 ms, with the power cut on upshifts limited to as little as 30 ms. ![]() In semi-automatic mode, the transmission is shifted by electronic controls and the rider need only push a button to initiate an upshift or downshift, in a manner similar to high-end sports cars that are operated using a paddle shifter. The automatic mode also offers convenience for all riders by reducing fatigue in heavy traffic, over long distances, or in adventure-type riding. ![]() In automatic mode, ShiftFX EST provides a much simpler interface that eases a new rider's introduction into motorcycling by eliminating the need to operate the clutch or manually shift the transmission. The system builds on existing gearbox design, adding a sleek, simple rider interface to provide push-button semi-automatic or fully automatic shifting. The BDC demonstrator model with ShiftFX Electronic Shift Transmission in actionįollowing several years of research and development, including the use of materials and technology new to the motorcycle industry, Biperformance Development Corporation (BDC) announces the completion of its state-of-the-art transmission control system for OEM motorcycle applications, the ShiftFX Electronic Shift Transmission (EST). ![]() Biperformance Development Corporation Introduces the ShiftFX Electronic Shift Transmission for OEM Applications
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