A recent patent shows that Aprilia? Mana has become a new type of test-bed for tilting front suspension. Despite withdrawing from the product lineup, 839cc? Mana's rotating gearbox seems to be very suitable for this structure, making large tricycles as easy to ride as scooters, and the third wheel provides enhanced stability and front-end grip. This design is obviously rooted in the system developed for MP3, but it was developed to cope with the pressure brought by heavier and faster motorcycles, and increased the control of steering and suspension geometry.
Like piaggio? MP3 (and Yamaha? Three cities? 300 and Niken), which is based on two parallel upper links extending over the entire width, one above the other. When Aprilia tilts, they rotate in the center and a steering head is installed at both ends. Parallel links mean that the steering head tilts with the vehicle, however, the components below these dual steering heads are different from those in MP3 and Yamaha. The front suspension of MP3 is attached to the front connecting rod, which has the function of shock absorption, and there are a pair of telescopic forks on both sides of Nike. On the contrary, the new design has a bent cast aluminum column on each side, and the four transverse links at the bottom are connected to the suspension column-just like the wishbone on many cars.
The patent points out that the system is superior to MP3 and Niken, and it is said that it is much cheaper than the telescopic fork used by Yamaha, and at the same time it produces less friction, thus reducing wear and maintenance. In addition, the wishbone arrangement provides greater freedom to adapt to the geometry of the suspension, allowing the camber angle of the wheel (its angle with the vertical direction) to change with the compression of the suspension during braking, thus providing advantages for grip. It is clear from the details that this is not just a vague idea, and the illustration shows the components that are at least ready to be put into full-scale prototype.
Details of Aprilia Inverted Tricycle:
Just like the rear and running gear of Nikken and MT-09, Aprilia's design also uses Mana parts at the rear of the front of the car.
Complex cast aluminum columns connect two 15-inch front wheels to a pair of steering heads on a parallelogram tilting linkage.
The body is tighter, the front fork of Nikken is on the outside of the front wheel, and the pillar of Aprilia is located between them, so it is kept narrow.
Connecting rods provide different geometric shapes, one of which has greater adjustability.
Shock absorption replaces the front fork, and each front wheel uses a coil for shock absorption, which has less friction compared with the telescopic fork on Nikon.
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