You can even shift the NM4 yourself with the paddle-style buttons.Parallel-Twin EngineThe 670cc liquid-cooled parallel-twin engine has the torque and power to get around town or wherever your adventure takes you.Low Seat HeightThe NM4 s mega comfortable seat is a super-low 25.6 inches so you always feel in control.Utility Box With 12-Volt SocketYou never know what the future may bring. The NM4 s LED user-friendly display with your choice of 25 background colors is designed to speak to you.Six-Speed Automatic Dual-Clutch TransmissionThe NM4 s Automatic DCT is the transmission of the future. Styling All Its OwnWith looks designed to blow minds, the NM4 wields a stylish, massive front end, and its fluid lines meld into a low, sculpted tail with dual 16-liter integrated storage compartments.25-Color LED DisplayAll displays give you information. With a twist of the throttle, the 670cc fuel-injected engine engages. And imagination with inspired engineering make every moment feel like a cinematic adventure. The near future where fantasy is reality. ENTER THE NM4 Welcome to the world of the Honda NM4. We think that’s still got a decent speed advantage,” says Marcus Waite, chief engineer of the McLaren Senna.īut for just about every other vehicle, though, it's hard to argue that anything can do the job better than the ZF eight-speed.2015 Honda NM4, 2015 Honda® NM4 EXIT THE NORM. “For our kind of product, it’s about a really fast shift, which the pre-engagement element of a dual-clutch gearbox helps us with. And engineers maintain that a good dual-clutch ’box does shift quicker. The added length of a torque converter can be prohibitive in a mid-engine architecture, and precise launch-control programs provide an advantage in acceleration.
Now it is starting to look like the transmission of the past,” he tells us.
“Ten years ago, still looked like the transmission of the future. That’s also the opinion of Andy Palmer, CEO of Aston Martin, who claims ZF’s 8HP is lighter, cheaper, and quicker than a dual-clutch transmission. Has the dual-clutch transmission met its match, then? You might think that’s the case, given the recent defections by the Audi RS5 and the BMW M5, which switched from dual-clutch transmissions to ZF’s 8HP torque-converter automatics. “We keep the same power flow through all of those applications, so we can carry over the calibrations, the software, all of those tools that keep that transmission shifting smoothly,” says Eric Burnett, chief engineer for eight-speed, rear-wheel-drive transmissions at Fiat Chrysler. And the commonalities among all 8HP gearboxes allow companies to share core elements between vehicles as different as the Dodge Demon and the Ram 1500, minimizing development costs. The ability to swap the torque converter for an electric motor, as BMW has done, allows automakers to develop hybrid variants with minimal changes to the drivetrain. It is compatible with a variety of all- and four-wheel-drive systems, such as an integrated center differential or a two-speed transfer case. It can accommodate a maximum torque output from as low as 162 pound-feet up to 770. Beyond performance, the eight-speed’s appeal is rooted in its versatile modular design. In 2017, some 3.5 million 8HP transmissions were built for a laundry list of manufacturers that includes Aston Martin, BMW, Fiat Chrysler, Jaguar Land Rover, and the Volkswagen Group. The 8HP transmission comes only in longitudinal form for rear- or all-wheel-drive vehicles, and we prefer it immensely to ZF's transverse alternative, a nine-speed. The 8HP also executes certain multigear shifts in this manner witness the leaps from sixth gear to third and even eighth to second. All one-gear and two-gear shifts use just two shifting elements: one opens, another closes. They’re also a product of a fundamental design that determines how the four planetary gearsets, three clutches, and two brakes in every 8HP gearbox are parsed into eight forward ratios. The 8HP transmission from German supplier ZF is quick enough to serve sports cars and graceful enough for large luxury sedans, and it combines those elements of speed and smoothness whether it’s installed in an Aston Martin, a Rolls-Royce, or a Jeep.Īlbert Dick, vice president of car powertrain technology at ZF, says the 8HP’s deeply satisfying shifts are rooted in factors ranging from the quality of the solenoids to the manufacturing methods to the control software.
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