The first cranks to have been designed with the input of a pro cycling team. This innovative product was developed collaboratively with Cervélo’s engineers, TestTeam riders and the TestTeam’s mechanic staff.
The result is the 3D Crank – extremely stiff, to meet the high demands of Thor Hushovd and the TestTeam’s sprinters, yet lightweight enough to satisfy the needs of Carlos Sastre and the climbers on the team.
Utilizing a special manufacturing process, named the ‘Trinity Drilling System’, an extruded aluminum bar is intricately CNC machined with three drilled holes through the length of the crank. The result is a unique triple hollow crank arm that enables ROTOR’s engineers to remove the excess aluminum in the core while still maintaining the structural strength of the crank. With this new system ROTOR has significantly improved the Hollowminum technology they developed for their Agilis Evo cranks.
3D crank has evolved the Agilis Evo design in fixing the axle to the right crank. The left crank is now used to assemble or disassemble the crankset with a low torque axle end bolt and the new DTT Evo clamping bolt. The opposite paired bolt system (the most common in the market) is no longer needed. Instead, an oversized DTT Evo bolt distributes the load forces along the thread. Installation is completely conventional but with improvements in both the efficiency and stiffness of the axle-crank interface.
In order to avoid overtightening, ROTOR 3D cranks include a replaceable threaded bushing between the crank and the bolt. In case of bolt failure due to overtightening, the crank is not affected and is easily repaired.
The 3D steel axle is compatible with standard Shimano, FSA etc BB.”
Weight: 546g (175mm length)