With the 742, we’ve retained the 41mm outer/35mm inner widths of
our 741 rims, while increasing impact strength, reducing weight and
maintaining all-important lateral stiffness.
Our new carbon rim design features a lower cross section height
for increased impact performance. The lower 19.5mm section height
makes the wheel better able to distribute the loads of localized
impacts from rock strikes or hard landings.
Also, we are introducing a new hybrid carbon fiber layup,
strategically combining layers of a new, high-toughness
carbon/epoxy prepreg with our original carbon composite, increasing
both ultimate strength and impact durability. This, combined with
the asymmetric rim design that features 5mm of offset, allows for
higher spoke tensions that are nearly equal from one side of the
wheel to the other. As a result of all this, the 742 nets a 30%
increase in impact strength yet a 7.5% decrease in weight, compared
to our previous rims.
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