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| More Information on the Bimota Tesi Models |
| A Bimota Tesi 3 / D Factory. The Bimota Tesi is a series of motorcycles produced by the Italian manufacturer Bimota . The prototype was developed in 1983 , but you have to wait until 1990 to see the commercialization of the approved version for road use: Thesis 1 / D . The Thesis 2 / D , the work of an Italian coach who had made their own (Vyrus 984 C³ 4V), continues the interrupted series in 1994 , followed in 2007 by Tesi 3 / D , with which the project has arrived to the present day. Apart from the prototypes and a competition model, all theses marketed are equipped with twocylinder engines The production Ducati . The main innovation of the Bimota Tesi is the presence of a front fork equipped with steering wheel hub instead of the classic telescopic fork. The operating principle of this system is intended to separate the function of "steering" by that of "suspension" (interdependent in the fork) and to drastically reduce the effect of "sinking" of the classic fork braking almost to cancel it and contribute to maintain a better stability of the bike and road holding. Architecture [ change | change wikitext ] View of the Thesis 1 / D with no fairing, with the swing arm and the frame to Ω.The telescopic fork, which is mounted on the vast majority of the bikes homologated for road use, combines both the function of steering than that of the suspension, so that the action of a irretrievably influences the other. The concept developed by engineer Difazio is to completely separate the guide from the suspension. In this way, undesirable interactions between the two functions disappear. The setting of the bike does not change during braking as with a traditional fork. That provision also allows you to change the geometry of the bike (wheelbase, caster), though without affecting the dynamic behavior. This is not the first time this technique is used (as it was the motorcycle ELF X and its derivatives), but until now had never left out of the racing circuits. With the Thesis, Bimota transposes it into an approved motorcycle. The two swing arms are connected by a frame in Omega. The wheel hub is formed by two conical bearings and an axis. Through a series of rods and referrals, it is connected to a steering pin is located on the left side of the motorcycle, bound to the frame. A further transmission rod connects the handlebars . The frame is reduced to two side plates which embrace the engine and supporting the tank, the handlebars and the rear seat and equipped with pins at the ends, to which are connected the swing arms, with consequent saving in weight. But this architecture requires the construction of a very large number of components to realize the front suspension, with the corresponding increase in costs. These pieces must be properly sized to withstand the high stresses to which they are subjected during braking. Moreover, the assembly and maintenance of the steering linkage must be made with extreme care, to minimize the play between them, deleterious for the driving precision . It should also be taken into account that the front fork sharply increases the turning radius, making complicated parking maneuvers , although this disadvantage has been reduced on Thesis 3 / D through the adoption of an arm made of tube trellis, allowing the use of tubes of small section from the smaller footprint without going to the expense of stiffness. The evolution of the operating principle on Thesis 1 / D ... [1] [2] [3] ... On 2 / D ... ... And 3 / D Development [ edit | edit wikitext ] Close up of the steering linkage and the frame of Ω Vyrus 985 C³ 4V. The first studies on what will become the thesis are made by engineering student Pierluigi Marconi for his thesis degree at ' University of Bologna , inspired by the work of the engineer Joe Difazio English for the construction of a motorcycle with steering and front suspension released each other : this is the origin of the name thesis . The prototype was presented at the Milan Salon in 1983. For the moment the engine is borrowed from a Honda VF 400 F . The frame is a shell of carbon fiber placed under the engine and the aesthetic is futuristic . With regard to the steering system, it is referred to as DCS, ie Dive Control System and relies on hydraulic components. [4] [5] [ 6] A first piston located on the left side of the wheel receiving a push from a second piston located below the handlebar. When the driver turns the steering wheel to the right, the piston connected to it pushes the fluid within a first pipe to the piston of the wheel, by compressing it. When the rider turns the handlebar to the left, the steering piston pushes the fluid in a second pipe, causing the extension of the piston of the wheel . Prototypes of the Bimota Tesi (1/3) ▶ The second prototype of the Thesis The following year, the company makes a second copy for the race of Austria and that of the Italian World Endurance Championship . The engine is derived from the Honda VF 750 F, with 90 hp at 10,000 rpm / min and the bike was purchased by the racing department of the Japanese manufacturer . The frame is a structure of alloy aluminum , carbon fiber and Kevlar that supports the motor . In 1985, the frame takes the form of two omegashaped plates in peraluman 35 that wrap around the engine from the bottom . The steering is still hydraulic, but this technique choice affects the handling and the bike is difficult to ride at any speed . It was not until 1987 and the presentation of another prototype driven by a motor Yamaha FZ 750 to see abandoned the hydraulic steering in favor of a mechanical transmission system, which makes the bike much easier to ride. In 1988 it is decided to use a Ducati engine for Thesis, since its base is more suitable as a structural element of the motorcycle . The result is a final prototype, which differs from the series of motorcycle only for the exhaust silencers . Once at the production model project development he did not stop and in 1993 gave birth to the Thesis Vtwo , powered by a twincylinder 500 cc engine and intended to participate in the World Championship in 1993 , but the shortage of funds small company Rimini and the complexity of technical solutions offered (the front fork, the first engine produced entirely to Rimini House and the fuel injection) on the bike proper earthing not allowed to point and in the end the bike was not a party to any race and the innovative engine of this bike would then pushed the 500Vdue conventional frame . Currently the prototypes # 1, # 3 and No. 4 are shown at the National Motorcycle Museum in Rimini , while the number 2 and number 5 prototypes [7] [8] [6] [3] [6] [6] [3] [3] [6] [9] [9] [10] [11] belong to a private collection |
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The photo Bimota-Tesi-Models-338-GP.jpg (Bimota Tesi Models - Right side cutaway view of a Bimota Tesi 1D.) was uploaded by: [email protected].
Please note, we do not have accessories, motorbikes, motor cycles, motorcycles, or motorcycle gear for sale. This site is dedicated to displaying bike images of Aprilia, Bimota, Harley Davidson, Honda, Kawasaki, Suzuki, Triumph, Yamaha, and other sportbikes.
The photo Bimota-Tesi-Models-338-GP.jpg (Bimota Tesi Models - Right side cutaway view of a Bimota Tesi 1D.) was uploaded by: [email protected].
Please note, we do not have accessories, motorbikes, motor cycles, motorcycles, or motorcycle gear for sale. This site is dedicated to displaying bike images of Aprilia, Bimota, Harley Davidson, Honda, Kawasaki, Suzuki, Triumph, Yamaha, and other sportbikes.
