An e-mtb with a mid-mounted, idler-driven drive unit and power-steering, and a gravel bike with two-wheel drive, are the wacky ideas Yamaha revealed on the Japan Mobility Present.
Maintain onto your hats, as a result of Japanese bike big, Yamaha, isn’t afraid of whipping up a storm with its two new, outrageous-looking, idea electrical bikes. Each had been proven on the 2023 Japan Mobility Present and provides a glimpse into the minds of the designers and engineers at this revered model. There’s definitely loads of innovation between the 2 bikes, with power-steering and two-wheel drive on the menu, however whether or not the ideas, or the know-how showcased, will ever make manufacturing is one other matter.
Yamaha Y-00Z MTB
Displaying parts of the YPJ-YZ idea bike of 2019, the Y-00Z makes use of an analogous design for the alloy body, with a split-clamshell design that’s seemingly bolted collectively down the center – most likely with some further bonding. This leaves cavities within the center to recess different parts such because the battery, motor, and shock.
However not like the earlier idea bike, and the manufacturing Yamaha Moro 07 mannequin, the Y-00Z makes use of the loafer wheel as a drive enter, somewhat than the underside bracket axle. In that respect it’s not not like the Rocky Mountain Dyname system. Nevertheless, Yamaha is utilizing a small 8-tooth drive sprocket, that doesn’t use any type of chain retention gadget, and can incur extra friction than a bigger loafer wheel. Additionally, though the Y-00Z makes use of a high-pivot suspension design, the loafer wheel is about 40-50mm ahead of the principle pivot, which can have an effect on anti-squat and chain development.
There aren’t any particulars from Yamaha in regards to the motor used or the height energy and torque it produces. Equally, the battery dimension is one other full unknown.
The field in entrance of the pinnacle tube is marked EPS and, we predict, refers to Digital Energy Steering, the place a small motor assists with turning the bars. That is one thing Yamaha has been creating on its motocross bikes, and based on the model, a “magnetostrictive torque sensor permits the system to perform as a steering damper and supply assisted steering, thereby contributing to a bike’s stability, enhancing agility, lowering rider fatigue, and extra”. The place the stabiliser side goals to counter high-speed torque functions on the bars that may end in a lack of management, whereas offering motorised help at decrease speeds and heavier steering torque inputs. In that respect it sounds very totally different to Canyon’s KIS steering stabiliser system.
The body additionally makes use of a separate bolt-on seat mast meeting that’s open to the weather on the backside. It additionally makes use of KYB suspension, with an attention grabbing upside-down fork up entrance. Beloved of idea bikes, the other way up forks haven’t achieved widespread success owing to the issue of engineering sufficient stiffness into the decrease legs and axle design.
Arguably even crazier wanting than the mountain bike is that this gravel/journey bike idea. It makes use of an the other way up suspension fork, built-in baggage racks and two-wheel drive. Sure, a entrance hub motor drives the entrance wheel, whereas a mid-mounted drive unit provides energy to the rear wheel by means of the drivetrain. Yamaha has built-in two batteries to produce energy to the motors. There’s no phrase on the burden of the bike, or how the additional mass of the entrance hub, and the facility from the drive, will have an effect on the general dealing with of this behemoth.