Bridge the gap with more power.
Rotor's 3D Road Cranks were originally developed with feedback from
the Cervelo Test Team, and while the 3D Plus Cranks retain many of the
same characteristics, such as Trinity drilled arms and compatibility
with round or Q-Rings, they have a few differences that make them stand
apart from their predecessor.
Like the originals, these cranks are lightweight and stiff — even
more so than most carbon cranks on the market. To accomplish this, the
3D Plus Road Cranks use a new 7055 alloy, as well as Rotor's proprietary
Trinity Drilling System. Using an end-drilling process, slightly
different than in the 3D Road, the resulting structure is similar to
that of a box-truss bridge. This allows the crank to further resist
rotational and bending forces better than hollow-tube construction.
Through this same-end drilling process, they are able to relieve the 3D
Plus arms of even more excess material, and therefore excess weight,
while maintaining the rigidity and strength you need to keep all your
power going directly to the pedals.
The 30mm alloy spindle is sized to work with either BB Right or BB30
standards. Rotor includes the appropriate fittings for both systems. In
fact, with the proper Rotor bearing cups (BB30-BSA), the 3D Plus Cranks
can be used in a standard 68mm English-threaded or Italian-threaded
bottom bracket shell. In any application, Rotor's clever design and
machine work is evidenced by their use of a locking preload collar that
makes bearing adjustment a breeze once the crankarms are installed and
torqued to spec. This preload collar is another difference from the
standard 3D Road Cranks as they use a different system to connect it all
The Rotor 3D Plus Road Crankarms come with an anodized black finish
and are available in three crankarm lengths — 170, 172.5, and 175mm.
Select from two BCD/chainring options: 110mm for compact 50/34 or 130mm
for standard 53/39. The alloy spider attaches to the splined base of the
drive-side crankarm and is secured with a lockring. It can be removed
and swapped for another with a different BCD should you need to make the
switch from compact to standard gearing or vice-versa. This same
adaptability allows retrofits with crank spider-based powermeters such
as SRM or Quarq. It can also fitted with Q-Rings or Rotor's round
chainrings. he 3D Plus Cranks have a 147mm Q-factor.
- Top-end alloy crankset
- Trinity drilled
- 30mm spindle
- Removable/replaceable spider
- Compatible with spider-mounted powermeters