For the last 6 years, the 1501 SPLINE ONE system wheel has been appreciated for its precise riding behavior and reliability in the MTB scene. This wheel lineup was developed with the goal to meet the specific demands of the different categories Cross Country, All Mountain and Enduro.
The third and latest generation of the 1501 SPLINE ONE carries on this idea and even rises to the next level: The 1501 got CARBONIZED. Different carbon rims have been developed that meet the specific requirements for each category: Cross Country, All Mountain and Enduro. But not only the rim got upgraded. The higher inherent stiffness of the rim allows to use super lightweight Competition Race Spokes. To round up this system wheel we have chosen the brand new 240 hub with the Ratchet EXP system.

Some of you may now wonder what happen to the benchmark aluminium wheelset?
Well, we didn’t forget it! We had a close look at the market and checked what people build on their own. The findings are combined in the new 1700 SPLINE. Benchmark alloy rims, bombproof redesigned 350 hubs – upgraded by a 36 SL Ratchet System.

WHY CARBON?

Carbon makes it possible to build lighter wheels, which improve riding behaviour of the specific wheels for various fields of application. By further improving 1501 SPLINE® ONE wheels, we are able to reduce the weight by up to 180 g per wheel set compared to the previous generation while preserving its values.

DT COMPETITION RACE® SPOKES

Thanks to the higher inherent stiffness of the carbon rim, compared with an aluminium rim, the use of ultra light DT Competition Race® spokes ensures perfect wheel stiffness for precise riding without being too stiff. Ultra light and super strong are the terms that describe the double butted DT Competition Race® spokes best. Unlike previous DT Competition® spokes, DT Competition Race® spokes use a middle section which is 0.2 mm thinner – allowing further weight savings on the new 1501 SPLINE ® ONE with no compromise on durability.

240 HUB RATCHET EXP

Lighter, stiffer, more precise and even easier to maintain – the new 240 EXP hub is a must for 1501 SPLINE ® ONE wheels. The RATCHET EXP free hub system, which comes with 36 points of engagement transfers the pedalling load directly to the trail and is more durable than ever.

XRC 1501 SPLINE® ONE

30 MM INNER WIDTH LESS ROLLING RESISTANCE

Cross Country wheels are ideal for fast racing; therefore it’s necessary to minimise resistance wherever possible. On a rough surface, rolling resistance can make up to 69% of the total resistance.

SPEED = ENERGY INTERTIA MOMENT + ROLLING RESISTANCE + GRADE RESISTANCE + DRAG

Rolling resistance is defined as: rolling resistance coefficient x weight x gravitational acceleration. The coefficient is defined by wheel size; tyre section; tyre characteristics, tyre pressure, tread and soil. While most of those factors are hardly influenced by the wheel, we can modify the tyre support. A wider rim provides improved tyre support which offers lower tyre pressure and leads to less rolling resistance on rough tracks.

HIGHER TIRE SUPPORT ALLOWING LOWER PRESSURE

During cornering, lateral forces impact the tyre. The tyre contact patch moves in the opposite direction to the lateral force. When cornering with a narrow rim, the tyre contact patch moves sideward and is not supported through the rim. This results in an unstable riding experience. The resulting folding in the tyre creates tension and the tyre pulls to the opposite bead. This causes a loss of air between the tyre bead and the rim bed, a so-called tyre burping. The tyre contact patch of the wide rim is inside the rim flanges. The side wall of the tyre is supported by the wide rim, which increases control. A wider rim can therefore be ridden with lower air pressure than a narrower rim.

XMC 1501 SPLINE® ONE

WEIGHT-TO-DURABILITY OPTIMIZED CARBON LAYUP

Sometimes, the most beautiful trails can only be conquered by your own muscle power. Long ascents and carrying passages require a light wheel set. When descending, however, the wheel must be stable enough to withstand obstacles like roots and rocks. This is exactly what the XMC 1501 SPLINE® ONE rim has been designed for.

EXC 1501 SPLINE® ONE

LESS WEIGHT BETTER HANDLING

When developing an Enduro wheel our main focus is on impact resistance. The reason for this is quite clear – when riding through the chunkiest trails, you want a wheel you can trust. Along high impact resistance our goal was to reduce the weight of wheels. A lighter wheel is nimbler and more precise, enabling the rider to be in total control of his direction, and helps to hit even the trickiest line precisely. Due to fewer rotational mass, less braking power is needed to slow down; the rider has simultaneously to move less mass and is therefore able to manoeuvre the bike more easily – saving valuable energy on long descents. These are the reasons why we decided to resort to carbon.