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Still getting more individualised: the ALDHU 3D+ crankarms by Rotor
The ALDHU 3D+ cranks are Rotos's lightest cranks ever. The innovative modular structure, together with axles and different chainring options, makes each component individually available to accommodate the current spectrum of riders and bike standards.
The ALDHU 3D+ incorporates OCP Mount technology, which enables the rider to fine-tune the orientation of Rotor's oval Q-Rings. The ALDHU 3D+'s proprietary, patent-pending design is based on the modularity of each crankset component.
The model name comes directly from Rotor's racing heritage. It is an abbreviation of Alpe d'Huez to commemorate Rotor's first iconic victory at the Tour de France with Carlos Sastre.
Compatibility: 1-speed, 2-speed
Chainring Mount: Rotor Direct Mount*
* 110 mm bolt circle diameter, 4 arm optionally with ALDHU 3D+ spider
Crankarm Material: aluminium (7055)
Crankarm Length: 170.0 mm, 172.5 mm, 175.0 mm
Q-Factor: 147 mm (standard), 152 mm (offset)
Recommended Bottom Bracket: BB386EVO, BB30, BB86, BBRight, BSA, ITA, Pressfit 30*
* see Rotor spacer chart
- ALDHU: innovative modular structure with different axles and chainring options
- OCP (Optimum Chainring Position) Mount Technology for fine-tuning the orientation of Rotor's oval Q-Rings
- for chainring change only an allen key is required
To build the best cranks, Rotor starts with the best materials. 7055 combines the superior physical properties of a 7000 alloy series with incredible fatigue resistance. Every single bar of raw material is checked by ultrasonic inspection to guarantee it free of internal defects. 7055 is used to craft Rotor's 100 % CNC-machined cranks, like the FLOW, the 3D+, and the REX 1.
Manufactured with the latest technology. Computer Numerical Control (CNC) machining provides a precise and consistent manufacturing process. This is especially important when it comes to crafting bike components in order to ensure flawless functionality with respect to all the parts working together. Equipped with the latest CNC resources, Rotor parts are precisely machined to within a hundredth of a millimeter.
Rotor´s CNC-machined cranks feature the Trinity Drilling System, which is a process that drills three full-depth holes along the axis of the crank. This allows them to remove excess material from the crankarm resulting in a lighter crank without compromising its exceptional stiffness-to-weight ratio.
Rotor's Twin Leg Concept boasts the stiffest possible crankset by balancing the cranks' left-to-right stiffness. There is no point in making an ultra-stiff right crank arm if the left crank arm doesn't measure up. By designing the cranks as a real set - not just two individual arms, TLC offers the most-balanced cranks possible.
Rotor's exclusive patented technology " OCP Mount" refers to the pedalling's biomechanical optimization when you are using Q-Rings; this lets you adjust the orientation between chainrings and cranks by one step degree.
The shape of the axle lets you position independently both cranks and spider or Direct Mount, and thereby change the relative orientation in order to adapt to the optimum orientation of each user.
The multiple positions offered by " OCP Mount" technology let a fine adjustment of the OCP (Optimum Chainring Position). In this way, with the OCP Mount technology, any oval chainring can benefit from an OCP with micro-adjustment to increase the performance of your pedalling and your knees health, or even to modulate the traction in MTB and Cyclo-cross.
Adjust perfectly your chainrings to your pedalling style with the Rotor's " OCP Mount" .
Manufacturer Part Numbers:
170.0 mm: C02-102-19010-0
172.5 mm: C02-102-20010-0
175.0 mm: C02-102-21010-0
- 1 x Rotor ALDHU 3D+ left crankarm
- 1 x Rotor ALDHU 3D+ right crankarm
- axle not included (standard or offset)
- chainrings not included (oval Spidering, round Spidering, separate oval rings or separate round rings)
- black-matte/170.0 mm: 364 g