DEEPER TECHNICAL DETAILS - Vins...

www.vinsmotors.com

DEEPER TECHNICAL DETAILS

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Vins is a small handicraft firm founded in March 2017 in Maranello, in the heart of the Motor Valley, where new ultra-light and high-performance motorcycles are manufactured.

• Design / Engineering

• Chassis

• Front joining assembly

• Suspensions

• Braking system

• Aerodynamics

• Engine

• Cooling system

• Ergonomics

• Customization options

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pag 11Inside the project

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A sole two-wheeled vehicle has never been equip-ped with so many distinctive and ground-breaking solutions at once. Stemming from the “Made in Italy” know-how, they just aim to achieve the best simpli-city, efficiency and lightweight nature.

This motorcycle is completely hand-made by “en-thusiasts” for “enthusiasts” and its primary goal isto make you have fun and incarnate pure riding experience in all its expressions: instant accelera-tion, good handling and familiarity, with a constant-ly safe and effective braking. It is a quick-reacting motorbike that will never get anybody bored and always keep you satisfied, bend after bend.


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Design/Engineering

Where function matches shape. Both from a con-ceptual and technical perspective, nothing is left to chance. Each part has been conceived, designed and manufactured to effectively perform its function by keeping the primary project traits: lightweight natu-re and simplicity.

A small amount of parts, a simple construction way and limited weight make this motorcycle a really unique and exquisite piece of work even from design and style point of view.

• A fully different motorcycle concept

• Innovative layout

• Automotive and aircraft inspired

• A pure shape with sporty and dynamic lines

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A never seen before carbon fiber monocoque chassis. Its cross section is hollow and its inside is shaped as an air duct. There is what we call “traversino”, a structu-ral chassis element and an extraction duct at the same time, to properly discharge hot air flowing through the motorcycle.

Chassis

Cross section focusing on the monocoque cen-terline and front joining assembly detail.

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Based on the picture, the motorcycle chassis consists of:

• The carbon fiber monocoque chassis;

• The front joining assembly that is made from alu-minum and enclosed both on the top and lateral sides into the monocoque body.

Both bodies are sturdily and rigidly connected with the motorcycle engine in order to support it.

Front joining assembly

The model on display at EICMA Motor Show 2017

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Front joining assembly detail with incorporated expansion tank.

The front joining assembly is an integrated motorcycle part made by aluminium. Due to is nature, it performs several functions.

• Structural joining assembly

• Front suspension linkage point

• Cooling radiator support

• Expansion water tank

• Air duct

• Engine support

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The front joining assembly distributes the loads pro-duced by the motorcycle dynamics and it supports the arms and linkage rods of the carbon fiber fork. Its up-per part supports the shock absorber and is arranged to help turning the two handlebar halves.

It includes also the (clear-blue-highlighted) water expansion tank which has a cavity in its inside that is hydraulically connected with the cooling radiator. Then the air flows through the ducts (yellow area) in order to reduce the radiator temperature and allowing the best heat transfer.A further function it performs is to support the engine through a linkage point in its bottom part.

Front joining assembly

Top arm

Single vibration absorber

Bottom arm

Fork shafts

Handlebar turning axis

Top steering rod

Bottom steering rod

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Based on the pictures, the front suspension consists of a stiff fork with a top-end that is attached to the chas-sis and a bottom-end that is linked to the front motor-cycle wheel.The front suspension consists of a top arm that which, on the none side, is hinged on the fork top-end while,on the other side, on the motorbike chassis. Further-more it includes a bottom arm opposite to the top arm. It is located under the top arm and it is hinged, on one side, on the fork top-end while, on the other side, on the motorcycle chassis. In other words, the fork top-end, the two arms and the chassis form an articulated four-sided element where the two arms act as two cranks and the fork top-end acts as a rod.

The front suspension comprises a single shock absor-ber. On one side, this is hinged on thebottom arm at a middle segment of it and can be hin-ged on the motorcycle chassis on the other side; as analternative option, the shock absorber could be hin-ged on the top arm instead of the bottom arm.Each arm is hinged at least on one of its sides throu-gh a ball joint (that can move freely to more rotatio-nal freedom degrees), so that the fork is able to pivot around a turning axis being approximately upright (that is, close to the vertical line) in such a way that the front wheel steering angle varies. Each arm is pre-ferably hinged on the fork top-end through a ball joint (that can move freely to more rotational freedom de-grees) and is hinged on the chassis through another joint that can move just to one rotational freedom de-gree.A linkage system connects the handlebar with the fork top-end so that, when rotated with respect to the chassis, the handlebar leads the fork to correspon-dingly rotate and thus vary the front wheel steering angle.The linkage system consists of a pair of cascade-ar-ranged rods and steering rods, that is, namely a top steering rod being hinged on the one end of the han-dlebar (in a position being eccentric with respect to the handlebar turning axis) and a bottom steering rod being hinged, on the one end, on the top steering rod while, on the other end, on the fork top end.

Suspensionfront

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In the assembly outlined in the enclosed pictures, the fork has two arms and the fork bottom-part splits up into two twin arms which enclose the front wheel on both sides.It is important to point out that the handlebar turning axis differs from the fork turning axis (which is defined by the ball joints that connect the arms with the fork top-end. This is to say that the handlebar turning axis does not coincide with the fork turning axis).Another remarkable thing is that the fork is completely stiff (i.e. does not have any moving parts at all) and can thus be fabricated using a single composite material piece (for example, carbon fiber).The front suspension that is described above brings many advantages.Firstly, it is extremely light (its may weigh from 30% to 40% of a traditional front suspension whose perfor-mance is the same).In addition to this, the front suspension that is descri-bed above makes the motorbike extremely well re-sponsive thanks to the fork (and thus the front wheel) which does not move along a straight motion path but moves along a curved motion path (that is along an arc of circle with great diameter).

The front suspension reacts to loads in an optimal way. When the stroke starts, the front suspension compress easily even under relatively moderate loads (that is, the front suspension behaves very ‘softly’ when the stroke starts) whereas said front suspension compress to a limited extent even under heavy loads when the stroke ends (that is, the front suspension behaves very ‘stiffly’ when the stroke ends).In other words, the suspension gradually changes from a ‘pro-dive’ behaviour to an ‘anti-dive’ behaviour.

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Suspensionrear

The rear suspension comprises a stiff fork (i.e. being absolutely free from elasticity and/or moving parts) that has one front end being hinged on the motorcycle chassis in order to turn around a turning axis which lies horizontally and transversally, as well as one rear end being connected with the rear motorcycle wheel (i.e. it supports the rear wheel in a known way). The above fork is completely stiff (i.e. does not have any moving parts at all) and can thus be fabricated using a single composite material piece (for example, carbon fiber).

The rear suspension comprises a single shock absor-ber being linked between the motorcycle chassis and the fork. Moreover, it is arranged in parallel to the fork turning axis: therefore, it lies horizontally and transver-sally. The single shock absorber features a two oppo-site ends, each of one is connected with the fork front end through a linkage system. Both single shock ab-sorber opposite ends slide with respect to the middle segment of that single vibration absorber, i.e. each sin-gle vibration absorber end that is connected with the fork slides with respect to the single vibration absorber middle segment.

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According to the assembly outlined in the attached pi-ctures, each linkage system moves a strut. This strut is hinged on the fork front-end on the one side and on a rocker arm on the other side.Each rocker arm is centrally hinged on the motorcycle chassis, as well as hinged on the strut and a single shock absorber end at the two ends. In other words, each rocker arm is supported by the chassis on which it is centrally hinged and features two arms on which a strut and a single shock absorber end are connected respectively.

According to the layout, we have a double-action sin-gle shock absorber (i.e., it acts both in extension and compression directions).The fork is a dual-arm and the fork rear part splits up into two twin arms which enclose the rear wheel on both sides. The rear suspension that is described abo-ve brings many advantages.

Firstly, it is extremely light (it weight can be total 70% to 80% of a traditional rear suspension whose perfor-mance is the same). This result is achieved since the transversally arranged single shock absorber, unlike more traditional longitudinally arranged single absor-bers, allows for the implementation on both sides and thus a better use of the single absorber stroke while the fork having the same excursion. Therefore, a smal-ler and lighter single vibration absorber can be used.

Rear suspension detail in the Vins Duecinquanta model-road version

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New racing braking system by JJUAN for a ready and safe brake. The whole motorcycle low weight makes it possible to use a single front disk measuring 300 mm with a 4-pistons calliper instead of the dual-disk solu-tion, so that unsuspended masses, inertia, equivalent weight and overall system weight are brought down.A new friction material along with the exclusive front brake disc by Newfren ensures perfect heat dissipa-tion and prevents fading. At the rear there is a 200 mm disc with double-piston calliper.

Front brake calliper

Braking system

Rear brake calliper

Newfren brake disk design

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The whole project focuses on aerodynamic efficiency and lightweight nature in addition to integrated parts.Aerodynamics

Cooling air ducts: They are self-supporting and hold the whole motorcycle front part (high pressu-re and fresh air region). The classic front subframe is thus eliminated.

Washing ducts: They are additional air intakes that cool down the region beneath the monocoque.

Engine air intakes: They are situated in the lower motorbike region on the two sides of the front fork, so that they are able to continuously let fresh air flow in.

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The monocoque is wholly shaped as an air duct and is thus converted into a maxi-extractor; finally, the “tra-versino” is used as a splitter so that hot air flows more swiftly to the rear side and is discharged there (low pressure and hot air region).

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front joining assemblymonocoque chassis Self-supporting ductstraversino cooling radiator cooling radiator air inlets

Front inlets aerodynamic detail

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The real unconventional choice. A project com-pletely based on lightweight nature and perfor-mance that could not be implemented without a 2-stroke engine.In a world dominated by 4-stroke engines, there is still someone who believes that simplicity, high specific power and low weight are key factors for a sporting rider. Only a 2-strokes can offer all the-se good qualities.

The patented electronic fuel injection system, the extractable gearbox, the electronic exhaust valves and the dedicated exhausts are just some of the elements making this engine a modern 2-strokes, as it should be.All these solutions simply aim to prove that 2-stroke engine is still living along with the real enthusiasts and that challenges can be overco-me. And that sometimes “2” is bigger than “4”.

Engine

Some details including the handmade 6-speed extractable gearbox

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Jolly Moto tailor-made exhausts

A piston coated with special covering treatment to lower the lube oil amount and increase its lifetime.

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Cooling systemThe first hybrid cooling system currently in production. It is a combination of a traditional water cooling systemand a forced air cooling system.The first type is achieved through a cooling radiator whose front section is used to a 100% extent. The coo-ling radiator (much larger) is normally situated behind the front wheel and does not receive a full and proper air flow due to the wheel and fork presence (less than a half of its section is actually reached by air while the motorcycle is in motion). A cooling radiator that is pla-ced at the end of a duct (self-supporting air ducts and front joining assembly) makes it possible to fully use its front section and therefore to use a smaller and li-ghter element.

The water is supplied in absence of any outer tray: the chassis itself acts as a tank.

Cross-section of the inlets and detail of the air flux in the frontal area.

The fresh air from outside flows into the radiator across the front half of the vehicle, after passing throu-gh the ducts. The airflow is facilitated by the shape of the front fairing

A second type of cooling consist of a centrifugal fan, fastened on the secondary engine crankshaft, take the airflow from the environment, directing it toward the rear exhaust pipe along with the hot air originated from the radiator.

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Saddle position and riding comfort

Handlebar halves length, position and opening angle which can be adjusted and customised.

Adjustable footrests

CAD-design of the mock model

ErgonomicsErgonomic research is a key part of the Vins’ project, in order to bring the product closer to the rider’s ne-eds.The race-inspired narrow seat and the deep chassis recess for knees ensure that the body maximally adheres to the motorcycle in order to get better con-trol over it.The masses to be handled are minimized and best road visibility is ensured at any time.Broad space for adjustment and customization of er-gonomic points such as foot pedals, handlebar hal-ves and seat forms an integral part of this product without losing the “Made in Italy” quality.

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Reference points for the Cagi-va Mito 125cm3 on the surface plate.

Reference points for the Su-zuki RGV Gamma 250cm3 on the surface plate.

Detail of the ergonomic mock model being placed on the sur-face plate

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The seat has played a key role in our search for thebest possible ergonomic comfort. Indeed, it is the result of an optimization processes: ultralight natu-re without leaving out comfort.The seat padding is made of silicone gel which was engineered using an iconic structural beehive pat-tern. It can be clad in leather for road version and in neoprene for racetrack version (other materials are available on request).

Carbon base Silicon gel

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Such an exclusive motorbike must inevitably allow for some customisation opportunities.

We can offer various customization kits that can be combined together concerning both the engine (Full Performance Pack) and the outfit (Ultralight Pack).

Various fairing colours and outfits are also available at the customer’s choice including the really exclusive possibility of choosing carbon-look elements texture (including monocoque). Indeed, we offer a broad fa-brics range in which each fabric has a different weave, fiber type and colour so that your motorbike can beco-me a fully customised art masterpiece.

One further step is the opportunity to create and en-gineer a One-Off special motorcycle. This is fully de-signed and built around our customer as a genuinely unique machine.

Customization options

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VINS SRLFACTORY

Via Musso, 3/3 Maranello (MO) 41053REGISTERED OFFICE

Via Cesare Battisti, 63 Modena (MO) 41121C.F. e P.IVA: 03743240362Cap.Soc. Euro 665.001.00

TEL. +39 0536 1703617E-MAIL [email protected]

PEC [email protected]

Vins Motors

Vins Motors

vinsmotors

Vins s.r.l.

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