Road bikes are made in Italy, as this country has a heritage and tradition in the manufacture of products of excellence with the latest in materials and cutting-edge technology, but with a handmade production finish that is difficult to match. The serial number on each frame identifies the person who made it and followed it throughout its manufacturing process. The company chosen for the production of the Costantino paintings has the necessary machinery to produce the molds with the design and geometry made by Constantíno. This company also manufactures other components where it uses its very high knowledge in the use of carbon fiber and the most avant-garde technological means of production, to produce highly resistant items such as fairings for GP motorcycles, safety cabins for racing pilots and racked. for Formula cars, masts and hulls for nautical boats, etc ...
To better understand the philosophy of Costantino paintings, we will give you information about their manufacturing process and choice of materials. Once the designs and their molds had been made, Constantín, together with the engineers from the factory that produced them, have chosen certain key materials for the production of the frames, providing them with sufficient lateral stiffness so that the transmission of pedaling muscle force is the most effective without compromising the comfort and handling of the bicycle.
For the outer layer, a 3k carbon fiber twill (twill) fabric (1500 carbon fiber strands per 3mm2) is used to achieve high resistance and a refined aesthetic.
A second layer of unidirectional fiber STS 180 grams per square meter, which is used to guarantee resistance in the longitudinal direction. The characteristics of this fiber are 360kg / mm2 of resistance to breakage and 23.5kg / mm2 of elasticity level.
A third layer of unidirectional 40J fiber of 150 grams per square meter, which is overlaid at various angles to give the frame lateral stiffness while achieving reduced weight. The right amount of fiber should be used, because by default the frame would not have enough stiffness and would have too much, which would be uncomfortable to ride since it would not absorb the vibrations of the road. This layer has an elasticity of 60kg / mm2 and resistance to breakage of 400kg / mm2.
The fourth layer is a 300 gr / m2 fabric of T700 GK, used as an anti-torsion layer with 450kg / mm2 of resistance to breakage and 25.5kg / mm2 of elasticity.
The fifth layer is one of the 200gr / m2 hybrid carbon-kevlar fabrics, it is used in compromised areas to absorb vibrations.
The sixth layer is a multiaxial fabric at 0º, +/- 45º, 90º, which is added at the points where torsion stress, lateral flexibility and tension are present at the same time.
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The seventh fabric is a carbon-titanium hybrid that is used in high stress areas as the head tube, in the joints made by the rear tie rod with the vertical and horizontal tubes, and in the joints of the 3 tubes around the bottom bracket shell, achieving a stiffness difficult to improve with a reduced weight.
This fabric is used exclusively in the Monocoque X1-TI and X1-MESSENGER.
All the materials that we have talked about so far are carefully positioned in the mold with a resin between the layers. It is placed in an autoclave at - 6 bar vacuum and a temperature of 140º for 6 hours, which gives it a homogeneous structure with high performance.
