Carbon fiber rear stay of the Carve line, made by laying several layers of HM
(High Modulus) carbon fiber. Together with the special grooves placed on the
exterior sides, it considerably increases the frame's lateral strength,
minimising energy losses from pedalling and enhancing the bicycle's
manoeuvrability and stability in curves. The introduction of the "single plug"
concept in the horizontal rear stay together with the innovative bottom bracket
with connection lowered in relationship to the axis of the centre to front
contributes to further enhancing the stay's lateral strength. The bottom bracket
made by CNC machined process from one piece of a full block of heat-treated
aluminum.
Columbus Carbon Fiber Lab also worked to improve the comfort of the
frame. Given that the stresses from the ground reach the rider through the
wheels and the frame and that these stresses act primarily on the bicycle's
vertical plane, we have give both the seat and chain stays a slight curve with
the concave shape turned downwards. This gives the rear stay an "active action"
of softening vibrations and a slight shock absorbing effect.
The dropouts are
also made from one piece and CNC machined, with the pivot of the connector on
the seat stays, positioned in line with the centre of the wheel hub. This makes
it possible to adjust the rear stay for all frame measurements, with minimal
adjustments to the carbon elements.
Columbus Carve Rear Stay
