DT Swiss ARC 1400 Dicut Rear Wheel 28" Disc CL 12x142mm TA Shimano 11SP Light 62mm

ARC 1400 DICUT 62: The aero all-round wheelset with an excellent combination of stability and low drag for differently cupped track profiles.

The new ARC 1400 DICUT wheels with the AERO rim profiles also convince with the new 1400 DICUT Aero hubs. Available as a disc brake variant 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 achieve lower wind sensitivity in crosswinds and an improvement in the overall aerodynamics of the wheels. In moderate crosswinds, the rider benefits from propulsion through the sailing effect as well as a stable aerodynamic position with full control of 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 complete this wheelset.

Reborn Faster - the new ARC wheels
Designed with a holistic approach to achieve a single cause: Speed! DT Swiss believes in engineering and strives for perfection in the development of new products.The guiding principle here is to keep pushing the technological boundaries.

Aero - The symbiosis of drag, handling and efficiency.

TRANSLATIONAL AIR RESISTANCE
Air resistance is the aerodynamic force that hits the road cyclist in the direction of travel and slows him down. It depends on speed as well as on the attack surface of the road cyclist (75%) and the road bike with the components installed in it (25%). To minimize this translational air resistance, the area of attack of the overall system must be minimized.

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

SINGLE EFFECT
In crosswinds, road cyclists and their road bikes are subject to lateral forces that affect handling. In the development of wheels for road bikes, the goal is to minimize these lateral forces and provoke a sailing effect - this 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 translational drag, but benefits from reduced drag. Depending on the rim height and its shape, the air resistance can thus reach negative wattage values, which even causes forward propulsion. Excellent sailing effects in crosswinds occur with increasing angles of attack up to 18. In addition, stall occurs, which subsequently causes drag to increase again.

ROTATIONAL AIR RESISTANCE
The rotating parts of the bicycle, such as the wheels, not only move forward at a certain speed, but also experience rotational air resistance. Rotational air resistance can be described as the additional friction created when the impeller 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. Since the spokes are the load-bearing connecting element between the rim and the hub, they have a special significance 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 result in higher rotational air resistance.

LENGTH MOMENT
Crosswinds create forces on the impeller and can have an impact on drivability. Therefore, the driving behavior 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 thus benefits from a predictable and therefore controlled steering behavior, stays longer in the aerodynamically optimal position and reaches higher speeds.

WHY IS THE STEERING MOMENT 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 exert a strong influence on the wheel and are partly 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 THAT MEAN IN DETAIL?
The lateral force distribution on a wheel rim is asymmetrical in crosswind conditions. This asymmetry generates a moment (steering moment) 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 forces on the rim in crosswinds. This was achieved using computational fluid dynamics (CFD) simulations and confirmed by wind tunnel tests.

ROLLING RESISTANCE
Rolling resistance is about more than just the forces that must 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 area, the contact area of wider tires is "shorter". Therefore, modern tires roll better due to the lighter deformation of the carcass and the contact patch - rolling resistance decreases.

TUBELESS TECHNOLOGY
Tubeless tires offer some significant advantages over the conventional combination of tire and tube: The tire can be driven with less pressure without risking "snakebites" and thus offers more grip. The lower pressure also ensures greater ride comfort. The absence of the tube means that there is no friction between the tube and tire, and therefore rolling resistance is lower when riding off-road and over obstacles. In addition, if tubeless milk is used, the tire is also immune to punctures and small cuts. A great advantage for those who like to travel long and away from the nearest bike store.

The advantages
Tubeless Ready rims from DT Swiss have other advantages over conventional rims. Thanks to the design of their cross-section pops the tire when inflating quite easily in place, so that usually only a normal floor pump is needed. The sophisticated profile of the rims from DT Swiss also ensures precise and secure fit of the tire, even under tough driving conditions.

The perfect fit
The profiles of DT Swiss rims are designed specifically for tubeless use. They guarantee a perfect fit and make the installation of 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 in finding the right tool for removing the valve core. The conical valve base ensures a tight fit.The DT Swiss Tubeless valve fits perfectly with the DT Swiss rims and ensures a perfect seal for long trouble-free rides.

DT Swiss Tubeless Band
The DT Swiss Tubeless Ready Tape seals the rim and also functions as a rim tape. It is available in different sizes to perfectly fit the different internal 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 allows tubeless driving.DT Swiss also strongly recommends the use of a high-performance tire sealant 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 reaches its full potential only with a sealant! When choosing a sealant, make sure that it is compatible with the rim, rim tape and tire. It must not be corrosive or aggressive in any way. In case of doubt, contact the manufacturer of the sealant so that you do not lose your DT Swiss warranty.