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AX Lightness Selection 29C clincher MTB wheelset

AX Lightness Selection 29C clincher MTB wheelset  NEW

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  • Selection 29C

    The wheelsets of our SELECTION line represent the entry into the ax-lightness wheelset family.
    Nonetheless it is not being cut back on the quality or qualities of the wheels. The Selection wheels share our same high-end German-made rims that shine with their unparalleled lightness and high stability.

    The SELECTION wheelsets are a synonym for an uncompromising reliability even under severe conditions, without sacrificing the special ax qualities such as light weight, high stiffness or low moment of inertia.

    On the hub side for MY2018 we are resorting to our own disc hubs that form an excellent complement to our very light rims thanks to their low weights of just 145 respectively 269 g. Thanks to their refined geometry and multi-sealed ball bearings the hubs boost a high stability and suitability for daily use. Various adapters allow the use for quick release as well as thru-axles and Shimano or Sram XD driver bodies.


    Specifications - Selection 29C
    Weight (+/- 5 %)1485 g/set
    Rimsax-lightness SRT CC 29 Clincher
    Rim materialFull Carbon
    Tire typeClincher, Tubeless
    Brake typeDisc brake - 6-Bolt
    Rim depth30 mm
    Rim width33,5 mm
    Inner width25 mm
    Hubsax HMA-017
    FreehubShimano, Sram XX1
    Axle standards frontQR, 15mm thru-axle
    Axle standards rearQR, 142x12 thru-axle
    SpokesDT Swiss Aerolite, black
    NipplesExternal
    Spoke tension140 kgf
    Spoke count (f/r)32 / 32
    Decal colourwhite
    Intended useMTB Cross-Country
    Rider weight limit100 kg
    Tire pressure limit1.7 - 2.0": 25 - 35 bar, 2.1 - 2.5": 20 - 30 PSI



    Rims: Material choice & production peculiarities

    We are exclusively using the highest grade carbon prepregs with specific properties for the requirements for our rims and adapt our production processes specifically to the demands of the material in use in order to thus be able to fully exploit the potential of the raw material. That way we are using high-grade, high-tensile fiber types with a specific resin system with long curing times and adapt our processes accordingly. Whilst a rim in mass production is hardly ever allowed more than 30 minutes, our first curing cycle accounts to a whopping 2 1/2 hours and in addition features very flat temperature and pressure gain slopes. This is in order to guarantee a resin flow as optimal as possible and to ideally net the laminate layers as well as to offer enough time to press out even the smallest gas bubble in between the laminate layers. With faster curing times however the danger of even generating additional gas bubbles in the system increases due to the fast and high rising temperature. These would not be visible with the naked eye - so do not differ in quality optically - but will yield vastly worse mechanical properties; a not be taken lightly price of a quantity driven mass production.

    Formula 1 materials
    As material we are using a specific resin sytem from motorsports that offers the highest heat tolerance and mechanical robustness and there predominantly is being utilized for the thermally and mechanically highly stressed brake exhausts of Formula 1 cars.

    Tempering
    This no enough and especially important for rim brake rims: In addition to the actual curing all our in effect already finished rim brake rims run through another heat cycle in a separate heating oven. During this so called "tempering" the rims are being gradually brought to their glass transition temperature (T_g) in order to prepare them for extreme thermal stresses, such as dragging brakes of a heavy rider in alpine territory. In this cycle the resin crystals re-orientate and this way ensure the highest possible safety.

    Production time
    The production of a single ax rim takes 7 1/2 hours in order to get the maximum out of the material and to be able to offer you the best possible quality and performance - a span of time that was unthinkable in mass production!

    Rims: SRT

    Spoke Reinforcement Technology
    Upon production individually casted and moulded as well as according to the occuring load specifically reinforced spoke holes eliminate the need for a post-processing, machining or subsequent drilling and therewith a weakening of the structure. In particular the area of the spoke nipples is the highest stressed part of the rim: A drilling and therewith cutting of the fiber in this respect technically makes even less sense, but is an accommodation to mass production (in regards to time and labour) respectively simply due to a technology-transfer of well-known manufacturing techniques from metal rims without paying respect to the specific requirements and properties of fiber reinforced materials.

    Five tons of a nipple pull-through resistance
    The moulded nipple seats yield perfectly orientated nipples. As a result our rims do not carry any spoke tension limit. Stress tests at an independant university test laboratory attested a nipple pull-through resistance of 5t - much more than any spoke, nipple or hub body would ever be able to bear. Us ourselves we use a spoke tension of 1300 N for our wheelsets, and for that purpose are being supplied with specifically reinforced hub bodies from our hub suppliers that are able to cope with the high tension.

    Hand-built

    All of our wheelsets are built to the tightest tolerances and with extremely high spoke tension by hand in our company in Creußen, Bayern, and individually checked before being able to call themselves a real ax-lightness wheelset:
    An amount of work that is reflected in the final product and co-determines its extraordinary qualities!
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This item is crafted in Germany