Yamaha Niken

The Yamaha Niken is a 845 cc tilting three-wheeler motorcycle, manufactured since 2018 by Yamaha Motor and sold worldwide.

Niken at the 2018 Mondial de l'Automobile exhibition in Paris.

Overview

The Niken is a commercial version of the concept bike "MWT-9" announced by Yamaha in 2015. In the line of what the manufacturer calls LMW - Leaning Multi Wheel - the Tricity with 125cc already appeared in 2014. The basic concept are the two front wheels moving in conjunction with each other when the vehicle body is tilted, while the body can be moved like a normal motorcycle.

The name Niken is a coined word meaning "two swords", referring to the dynamic movement of the front two wheels like a sword master's two blades.
The development concept was called "New Type of Agility & Controllability".

The model was released as a reference exhibit at the 2017 Tokyo Motor Show. It was announced for release in Japan on September 13, 2018, and order reception started on the same day. According to the Japanese Road Traffic Law, as with Tricity, the Niken falls under the requirements for three-wheeled vehicles specified in the notification by the Prime Minister and is classified as a specific motorcycle, more precisely a specific large motorcycle. This type requires a large motorcycle driving license.
The application of the Road Traffic Act and the Road Act is equivalent to that of motorcycles, and the legal maximum speed is 60 km / h on general roads and 100 km / h on national highways. According to the Road Transport Vehicles Act, it is treated as a "motorcycle with sidecars" and is classified as a two-wheeled small car because of its displacement of 400cc or more. Therefore, it is subject to the automobile inspection registration system (vehicle inspection).

Technology
Suspension details of the Niken.

The bike is equipped with a water-cooled in-line three-cylinder engine, mechanically identical to the sports naked Yamaha MT-09 and Tracer 900, while the gear ratio and the ECU setup were changed.

The bike is equipped with ABS (anti-lock brake system) as standard. Each of the three wheels has its own rotation sensor and brake control device and is individually controlled.
The bike is also equipped with cruise control, assist slipper clutch, quick shift system, traction control system (TCS), and driving mode switching function.

The Niken arranges the front fork outside, in order to allow a bank angle of 45 degrees, and thus higher corner speeds compared to the Tricity - the first LMW bike - which has the front fork inside. The spacing of the front wheels is 410 mm. The newly developed steering mechanism achieves operability and steering very close to a normal motorcycle.
The front suspension uses parallel quadrilateral arms to support the cantilevered suspension. It is mounted outside the wheels to allow maximum lean and comprises two upside-down fork legs per side – a 43mm rear leg with adjustable preload and damping, and a 41mm front leg that just holds the assembly in alignment. Steering forces are applied via a separate group of tie rods and linkages, including offset steering knuckles. They realize the Ackermann steering geometry, similar to most cars, whereby the inside wheel turns progressively more than the outside, as it traces a smaller radius in each corner. Stub axles on each side carry cast aluminum wheels of 15 inches size, using 120/70-15 tires.[1]

The additional mechanics lead to 263 kg weight, around 70 kg more than the classical MT-09 motorcycle with the same basic engine.[2]

See also

References
  1. ridermagazine.com: 2019 Yamaha Niken | First Ride Review, May 28, 2018, retrieved January 27, 2020
  2. bennets.co.uk: The definitive Yamaha Niken review | 4,000 mile road test, June 10, 2019, retrieved January 27, 2020
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