Rotor Aldhu24 Direct Mount crank arms
ALDHU® - ROTOR’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 incorporates OCP Mount technology, which enables the rider to fine-tune the orientation of ROTOR’s oval Q rings. The ALDHU’s proprietary, patent-pending design is based on the modularity of each crankset component. Our new model name comes directly from our 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.
Features
- Q-Factor: 148 mm.
- Chainline: 43.5 mm.
- Material: 7055 aluminium.
- Spider: DIRECT MOUNT, SPIDER MOUNT BCD 110x4.
- Real weight: 358 g (170 mm), 365 g (172 mm), 361 g (175 mm).
- Compatibility: BB86/BB90/PF30/BBRIGHT/BB386/BSA/ITA/BB30.
- Crankset axle not included.
Technologies
OCP Mount
ROTOR’s exclusive patented technology “OCP Mount” refers to the pedalling’s biomechanical optimization when you are using Q rings or other oval chainrings; 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), because so far you could position the Q rings in 5 exclusive OCP points, in 4 by 4 degrees, with a usual spider. 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”.
TDS (Trinity Drilling System)
ROTOR´s CNC-machined cranks feature our Trinity Drilling System, which is a process that drills three full-depth holes along the axis of the crank. This allows us to remove excess material from the crank arm resulting in a lighter crank without compromising its exceptional stiffness-to-weight ratio.
Twin Leg Concept
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.
Alu 7055
7075 aeronautic-grade aluminum alloy offers superior physical properties with which to craft components like our signature Q-Rings, REX 3 and 3D24 cranks.
Alu CNC
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 funcionality 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.