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To achieve this result, we have worked principally on two fronts:
A) A favourable weight/power ratio in which the weight is the dominant factor.
Do two motorbikes with the same power/weight ratio move forward in the same way? No, the lighter one will generally be more manageable, stable and powerful in braking, while the more powerful one will have a greater top speed. We have deliberately chosen the first option: biking for us means taking bends and enjoying them. Try slowing down and changing the direction of two balls rolling at the same speed: one for bowling and one for basketball… (Below is a table with some examples of motorbikes and their weight/power ratio compared to that of the VUN).
B) An optimal distribution of the weight for riding and balancing the bike. Are two motorbikes of the same mass equally “agile” if that mass is concentrated as close as possible to its centre of gravity or if it is distributed in a more distributed manner with respect to the whole machine? The one with the more “compact” centre of gravity will certainly be the more “agile” of the two. One need only imagine shifting a 5 kg bowling ball or a 5 kg table. One can play with the ball, but it takes a second person to move the table.
We have thus created a motorbike weighing little more than 130 kg, equipped with manageable power, a balanced ride, high-quality components and all the masses concentrated around its centre of gravity. It will thus be “easy”, “immediate” and “fun” in braking, curving, accelerating, changing direction on tortuous roads. In places where the motorbike provides the greatest potential satisfaction for its rider.
 Top speed over 180 kph (110 mph)
 Acceleration from stopped (0-400m) 12.79 secs. with terminal speed of 168 kph (104 mph)
 Acceleration (in fifth gear 90-130 kph - 55 - 80 mph): 4.8 secs.
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