DT Swiss ARC 1400 Dicut 80 Disc rear wheel, carbon, Center Lock 12x142mm 20mm Shimano/SRAM XDR

ARC 1400 DICUT® DB The DT Swiss Aero wheelset for road bikes with disc brakes with a perfect blend of acceleration, aerodynamics and handling. The new ARC 1400 DICUT wheels with the AERO+ rim profiles also impress with the new 1400 DICUT Aero hubs. Available as a disc brake version in three different rim heights (80 mm, 62 mm and 50 mm), the wheels set a new standard in aerodynamics and handling. In close cooperation with the aero experts at SWISS SIDE, it was possible to reduce wind sensitivity in crosswinds and improve the overall aerodynamics of the wheels. In moderate crosswinds, the rider benefits from propulsion through the sail effect as well as from a stable aerodynamic position with full control over the bike. High-quality DT Swiss aero spokes and the lightweight 240 DICUT aero hub with the reliable Ratchet EXP system for a direct drive round off this wheelset.

The new ARC 1400 DICUT wheels with the AERO+ rim profiles also impress with the new 1400 DICUT Aero hubs. Available as a disc brake version in three different rim heights (80 mm, 62 mm and 50 mm), the wheels set a new standard in aerodynamics and handling. In close cooperation with the aero experts at SWISS SIDE, it was possible to reduce wind sensitivity in crosswinds and improve the overall aerodynamics of the wheels. In moderate crosswinds, the rider benefits from propulsion through the sail effect as well as from a stable aerodynamic position with full control over the bike. High-quality DT Swiss Aero spokes and the lightweight 240 DICUT Aero hub with the reliable Ratchet EXP system for a direct drive round off this wheelset.

Reborn Faster - the new ARC wheels
Developed with a holistic approach to achieve one thing: Speed! DT Swiss believes in engineering and strives for perfection in the development of new products. The guiding principle is to push the technological boundaries further and further.

Aero+ - The symbiosis of air resistance, handling and efficiency.

TRANSLATIONAL DRAG
Aerodynamic drag is the aerodynamic force that hits the cyclist in the direction of travel and slows him down. It depends on speed and the surface area of the road cyclist (75 %) and the road bike with its components (25 %). In order to minimize this translational drag, the contact area of the entire system must be minimized.

To achieve a higher speed, the air resistance of the entire system consisting of rider and road bike must be minimized. This is because air resistance increases exponentially as a function of speed. Above 15 km/h, air resistance is the greatest force to be overcome. Since the front wheel contributes 8% of the total air resistance, the behavior of the wheel plays an important role.

SAILING EFFECT
In crosswinds, road cyclists and their road bikes are exposed to lateral forces that affect their handling. When developing wheels for road bikes, the aim is to minimize these lateral forces and provoke a sailing effect - combined with the best rideability. You can think of this sailing effect as a sailboat whose sail catches the wind and propels the boat.

When cycling, the rim has the same effect and can push the entire system forward. The big advantage in moderate crosswinds with angles of attack between 0° and 20° is that the road cyclist is no longer slowed down by the translational air resistance, but benefits from the reduced air resistance. Depending on the rim height and shape, the air resistance can reach negative watt values, which even results in forward propulsion. Excellent sailing effects in crosswinds occur with increasing angles of attack of up to 18°. Above this, a stall occurs, which causes the drag to increase again.

ROTATIONAL DRAG
The rotating parts of the bicycle, such as the wheels, not only move forward at a certain speed, but also experience rotational drag. Rotational drag can be described as the additional friction that occurs when the wheel cuts through the air with the rotating components. Rotational drag accounts for up to 25% of total drag compared to the 75% of translational drag. As the spokes are the load-bearing connecting element between the rim and hub, they are of particular importance in the fight against the wind.

Important to know: The lower the rim height, the lower the influence of the sail effect. Longer spokes in low rim heights lead to higher rotational drag.

STEERING TORQUE
Crosswinds generate forces on the wheel and can have an influence on rideability. Therefore, handling must be safe and predictable regardless of external weather conditions such as strong and changing crosswinds and headwinds. In order to maintain control of the bike at higher speeds, the AERO+ rim should have the lowest possible steering torque.

The road cyclist benefits from predictable and therefore controlled steering behavior, stays in the aerodynamically optimal position for longer and reaches higher speeds.

WHY IS STEERING TORQUE SO IMPORTANT?
The road cyclist feels lateral forces that occur during a bike ride due to crosswinds and passing vehicles (similar to gusts of wind) of different sizes and speeds. They can have a strong influence on the wheel and are sometimes unpredictable and dangerous for the cyclist. The greater the angle of attack (yaw) and the stronger the wind force, the more the road cyclist must constantly adapt to the required counterforce in order to ride straight ahead in the desired direction.

PHYSICAL EXPLANATION OF THE STEERING TORQUE
An asymmetrical distribution of the force acting on the front wheel in a crosswind generates a steering torque.

WHAT DOES THIS MEAN IN DETAIL?
The lateral force distribution on a wheel rim is asymmetrical in crosswinds. This asymmetry generates a torque (steering torque) around the steering axis - i.e. the axis around which the wheel and fork rotate during steering. One of the development goals of the new AERO+ rim shape was to minimize this asymmetry by evenly distributing lateral force on the rim in crosswinds. This was achieved with the help of CFD (Computational Fluid Dynamics) simulations and confirmed by wind tunnel tests.

ROLLING RESISTANCE
Rolling resistance is about more than just the forces that need to be applied to roll on different surfaces or overcome obstacles. Wider inner rim dimensions and wider tires support driving characteristics such as traction and comfort. Wider tires tend to have a positive influence on rolling resistance. Due to their larger volume, they have a wider contact area and can be ridden with less air pressure without the risk of catching a flat tire. While narrow tires have a longer and narrower contact patch, the contact patch of wider tires is "shorter". This is why modern tires roll better due to the lighter deformation of the carcass and the contact patch - rolling resistance is reduced.

TUBELESS TECHNOLOGY
Tubeless tires offer some decisive advantages over the conventional combination of tire and tube: The tire can be ridden with less pressure without risking "snakebites" and therefore offers more grip. The lower pressure also ensures greater riding comfort. The absence of the inner tube means that there is no friction between the inner tube and the tire and that rolling resistance is therefore lower when riding off-road and over obstacles. If tubeless milk is also used, the tire is also immune to punctures and small cuts. This is a great advantage for anyone who likes to ride long distances away from the nearest bike store.

The advantages
Tubeless Ready rims from DT Swiss have further advantages over conventional rims. Thanks to the design of their cross-section, the tire simply pops into place when inflated, so that usually only a normal floor pump is required. The sophisticated profile of DT Swiss rims also ensures a precise and secure fit of the tire, even under tough riding conditions.

The perfect fit
The profiles of DT Swiss rims are specially designed for tubeless use. They guarantee a perfect fit and make installing the tire as easy as possible. Nevertheless, it is always possible to use a conventional combination of tire and tube.

DT Swiss valve
The use of aluminum saves 40% weight compared to conventional brass valves. The integrated valve tool in the valve cap saves time and effort when searching for the right tool to remove the valve core. The conical valve base ensures a tight fit. The DT Swiss tubeless valve fits perfectly with DT Swiss rims and ensures a perfect seal for long, problem-free rides.

DT Swiss Tubeless Tape
The DT Swiss Tubeless Ready Tape seals the rim and also functions as rim tape. It is available in different sizes to adapt perfectly to the different inner widths of the rims.

The DT Swiss Tubeless Ready Kit
The DT Swiss Tubeless Ready Kit is used to seal the Tubeless Ready rim and thus enables tubeless riding. DT Swiss strongly recommends the use of a high-performance tire sealant even when using tubeless-specific tires. When using Tubeless Ready tires, the use of the sealant is mandatory (the sealant seals the tire, which is primarily not airtight). A tubeless setup only achieves its full potential with a sealant! The sealant must be compatible with the rim, the rim tape and the tire. It must not be corrosive or aggressive in any way. If in doubt, contact the manufacturer of the sealant so that you do not lose your DT Swiss warranty.

Scope of delivery:

1x DT SWISS rear wheel ARC 1400 DICUT Disc Brake Carbon Clincher 80 mm
1x freehub body for 12-speed SRAM XDR
1x tubeless ready rim tape
1x tubeless valve
1x Valve Guard