Fulcrum's new E-Metal product line serves the
steadily growing market share of E-MTB´s. The
Boost wheelset is adapted to a conditionally increased bicycle weight and to the forces which the rider and motor act simultaneously on the drive. Every single component of the E-Metal impellers was developed especially for the requirements of E-MTB´s.
Features of Fulcrum E-Metal 3
2Way - Fit™ Ready
- This procedure transforms wheels designed to be used with a clincher tyre and inner tube into Tubeless Ready wheels (no inner tube and compulsory use of a sealant liquid).
Reinforced Head Spokes - 13% more resistant
- The entire range of E-MTB wheels from Fulcrum
uses specifically developed oversized spokes
exclusively. These spokes, with a specially
developed head design for maximum strength,
confer not only extreme resistance and durability
but also contribute to the wheels fantastic power
transfer and reactivity. The complex spoke design
varies from 2.2mm to 1.8mm to ensure maximum
strength while eliminating superfluous material…
keeping things strong but as light as possible.
Reinforced Disc Flange - 5% more rigid
- The Fulcrum E-MTB flange is substantially larger to ensure
greater integrity but also 5% more rigid for robust
and uniform performance under heavy braking.
Reinforced Complete Hub Body System - 4x more reliable
- Adding a powerful motor to the transmission means
not only increased torque applied to the drivetrain
but also more extreme peaks in applied power
transferred upon the hub body and its internal
parts. Such forces made a more resilient freehub
system and body necessary. Fulcrum engineers
developed the internal teeth in tempered steel to
resist such extreme forces and guarantee uniform
performance and longer lifespan of a vital part of
the drivetrain. The system is 30% more resistant
to breakage with respect to alternative designs.
Tested on over a billion cycles the tempered
steel ensures a lifetime 4 times longer than that
associated with Ergal models used in traditional
MTB models.
Differentiated Profile Delta - 5mm
- Fulcrum E-MTB wheels incorporate specific
profiles for front and rear. The 23mm front rim is
more rigid and aids in maneuverability while the
18mm rear rim (5mm lower in profile) is flatter and
reinforced to deal with the larger impacts in a more
efficient and comfortable manner.
Internal Rim Support Structure - 12% more rigid
- The E-MTB wheel must guarantee structural
integrity and stability during repeated and
elevated stress, above and beyond what traditional
MTB wheels are exposed to. Fulcrum engineers
developed an internal rim support structure that
takes the form of a diagonally positioned bridge
of sorts. This advanced structure distributes load
throughout the entire rim thus alleviated excessive
compression in one single area. Thanks to the
incorporation of this structural development,
rigidity is increased laterally by 10% and vertically
by 14%, thus changing the overall performance
drastically.
Specific Nipple and Nipple Housing - 7% more reliable
- The E-MTB wheels from Fulcrum
incorporate a special housing with lateral guides
on both sides that allow the nipple to sit upon a
stable base, oriented in a perfect position toward
the spoke angle. Such a design permits a more
even distribution of spoke tensions. The resulting
structure is a more rigid, reactive wheel that resists
torsion and misalignment or deformation under
even the heaviest load.
