The Origins of Yamaha’s LMW Technology? Chopsticks.

Tricity 125 是雅马哈首款量产的多轮 (LMW) 车型，该技术的核心重点是为其配备两个前轮。 Tricity 的底盘后部采用传统踏板车底盘，底盘前部采用两轮结构，使其成为 LMW 车辆。
但是前部装配如何倾斜？如果这有点难以想象，您可能可以通过打开纸板箱的顶部和底部，将其侧翻，然后向下推（#1）来很好地了解所涉及的动态。在这种情况下，盒子的左右两侧代表两个前轮及其悬架，顶部代表连接两个前轮和底盘的机构，底部的一侧是地面。
事实上，在开始开发 Tricity 后不久，项目负责人 Kazuhisa Takano 使用了两种常见的家居用品来验证两个前轮的基本工作原理：一次性木筷子和橡皮筋。
他把筷子掰成合适的长度，纵横对齐，用橡皮筋把它们绑在一起，使结构变得灵活。通过创建他心目中的结构的 3D 模型，他能够更好地确认其设计的有效性。

The Two Fundamental Mechanisms of the LMW Design

To achieve performance with a good feeling of agility, lightness and stability in a vehicle configuration with two front wheels and one rear wheel, the front assembly of the Tricity 125 employs independent right and left cantilevered telescopic suspensions that are supported and connected to the chassis by means of a parallelogram link mechanism (#2).
This system separates the mechanisms for allowing the two front wheels to lean and suspension functionality, and makes it possible to achieve both a deep lean angle and a large steering angle for the handlebars, which contribute to the Tricity’s light and agile feel.

Parallelogram Link: Producing Natural Lean Characteristics with a Good Feeling of Stability

By enabling the two front wheels to lean in concert with the chassis when turning, the LMW mechanism brings a natural feel to the handling. The essential component for achieving this is the parallelogram link (#3) mechanism that supports the left and right independent suspensions of the two front wheels and connects them to the chassis.
The link itself is composed of two arms that are always parallel to each other and are positioned one above the other. With the right and left suspensions connected to them, the link assembly takes the form of a rectangle when seen from the front with the vehicle upright and a parallelogram when the machine is leaning.
The basic construction of the parallelogram link is simple and enables a lighter and more compact unit. And, because there is little change in the width between the right and left tires where they contact the ground, it achieves natural handling qualities with a good feeling of stability.

Cantilevered Telescopic Suspension: Contributing to Weight Reduction and More

The Basic Idea is to Divide the Front Tire’s Heavy Workload

The twin-front wheel design of the Tricity divides the load placed on the front tire in a conventional layout and thus effectively reduces it. One of the main benefits of the LMW design is the confidence-inspiring feel and performance potential it brings, especially during cornering and braking (#5).
At the same time, by using Yamaha-exclusive technologies and meticulous fine-tuning to create a ride character as close as possible to a conventional motorcycle, the development team sought performance that could help more people enjoy the fun and exhilaration of leaning a machine through turns.

The Added Benefits LMWs Bring to Commuter Vehicles

Small and mid-sized scooters typically adopt a design that combines the rear suspension components and the engine into a single “unit-swing” structure, which tends to make the rear half of the chassis heavier. But with the Tricity 125, adopting a twin-front wheel configuration naturally made it possible to achieve a more ideal front-rear weight distribution.
Creating a chassis with a front-rear weight distribution similar to a MotoGP race machine (#6) provided a foundation that made it possible to develop a ride character that is both natural and sporty.

What Are Eight Benefits of the LMW Mechanism?