With the 742, we’ve retained the 41mm outer/35mm inner widths of
our 741 rim, while increasing impact strength, reducing weight and
maintaining all-important lateral stiffness.
This 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 (2.5mm on 735) 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.
The 742 rims are ideal for the ultra low pressures (10-18 psi)
that we like to run with 2.8 Plus tires (or 18-25psi for 2.25" -
2.5" tires). Running any of our 35mm internal width rims work
incredibly well with the new 2.8 Plus rubber we've been riding from
Schwalbe and Maxxis. The low system weight of the wheels with these
rims and tires combined with the monstrous traction advantage have
been a revelation for those who have ridden them. We've also had
great luck with the 3.0 tires on the rims, and our tire
manufacturing friends have informed us that there are a lot of new
Plus tires in the pipeline.
These carbon wheels include the excellent Industry Nine Torch
hubs. The durable hubs are made in the USA in Industry Nine's
Asheville machine shop, and feature a 60t ratchet with 6 out of
phase pawls that results in a 3º engagement. They are equipped with
Enduro bearings and come with either Shimano or SRAM XD
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