Close Menu
    Bike Repair

    Is that normal? New cassette won’t fit easy

    Share.
    View 9 Comments

    9 Comments

    1. OutTheOfficeWindow on

      You need a new hub spline. What cassette are you using? It looks like they’re all individual gears?

    2. Ok_Paramedic_5914 on

      Happens all the time with aluminum cassette hubs.
      Take a file, and remove those sharp metal shavings carefully. New cassette should fit just fine.

    4. Forsaken_Ocelot_4 on

      Dr Swish (DT Swiss I asssume) should know to make these out of steel like Shimano specs, but people are weight weenies, so here you are with everyone else with marring on their hub. File off the raised bits and ride on. When you put on the cassette, make sure to tighten it to torque, as this helps.

    6. TJhambone09 on

      This is (unfortunately) normal.

      Shimano’s Hyperglide freehub spline standard calls for *steel* freehub bodies, not aluminum. Shimano played with aluminum freehub bodies, but made the splines *much* taller with that experiment in order to prevent the very thing you’re showing – cassette “bite” on the freehub.

      Most manufacturers use aluminum now because it’s an inexpensive place to shave weight. We’ll ignore the fact that it’s also the least valuable place to shave weight.

      You can use a file to knock off any burrs standing proud, and that will make installation of the next cassette easier, but it won’t slow the progression or make future removal easier, as cassette N+1 will bite into the freehub even more than cassette N.

      Inevitably in these threads someone will mention torquing your cassette lockring to spec. IMHO that always comes off as blaming the victim. It takes infinite clamping force to prevent individual cog rotation, and improperly torqued cassettes are rare. Fact is, this happens even to overtorqued cassettes.

    Leave A Reply