One of the items that came out, is the use-ability of the footboard.
"Many people use the space behind the front panel to transport items, in all shapes and sizes, up to large gym bags. We developed the footboard space to the maximum. Even the frame is specially designed for this, with a double tubular frame structure instead of the single structure that most scooters have! It is wider and allows an upright front portion, with a lot of space between the front panel and the seat."
Also the engine design was affected by that. "The radiator is mounted by the side of the engine and not in the front panel, again to gain space above the footboard and to keep the front light."
2012-Xenter Avalanche White (WM1) 2012-Xenter 125 Sketch 2012-Xenter 125 Sky Blue (DBM8)
"Comfort is really important if you ride everyday on cobblestones and rough city streets", Giovanna continues. "Of course large wheels help for that but we also did a lot of development on the suspension and the build quality. One example is the new, monocross-type suspension that has a single shock absorber beside the engine."
This is technology as on motorcycle and the famous TMAX, now specifically applied on a smaller displacement scooter.
• The shock absorber is mounted right above the engine which puts the weight at a central position which is good for handling.
• This gas/oil shock has a dual spring: a light spring to absorb small bumps and a stronger spring for larger bumps.
• It gives the Xenter a much cleaner tail design too, because there are not the two springs on each side of the rear wheel.
• It has a comfortably long suspension stroke of 92 mm.
• The front fork (with 100mm) has a long suspension stroke too, in good balance with the rear suspension.
Economy and performance combined
2012-Xenter Avalanche White (WM1)
The engine design is completely up to date and modern, with fuel injection and reduced inner frictions throughout the engine for optimal fuel economy. Yamaha incorporated many technologies that were originally developed for hi-tech motorcycles to make this engine super-efficient! Some examples:
• The 4-valve cylinder head allows a relatively high performance output, on top of its category.
• The fuel injection system uses high pressure and an injector with 6 fine holes to create a spray with droplets the size of a few tenths of microns - to optimize ignition and combustion.
• The plated cylinder with ceramic composite coating reduces friction and helps heat dissipation. This makes the engine run more stable and reduces oil consumption.
• A forged aluminum piston is strong and light and helps to reduce vibrations.
• The valve drive system uses roller rocker arms with needle bearings: to reduce frictions and let the engine rev easier and smoother.
• The off-set cylinder technology (a system introduced on our top-of-the-range YZ450F motocrosser for 2010), reduces piston wobble, with less friction and less power loss.
Many of the above features already make the engine run smoother than normal engines. In addition to that, Yamaha developed:
• A balancer to reduce vibrations inherent from the piston movement.
• A very precise crank balance - with all crankshaft components machined and finished with precision down to the single gram.