Silent "thunk" in Perception hub

Discussion in 'Cycling Equipment' started by FogVilleLad, Feb 20, 2008.

  1. FogVilleLad

    FogVilleLad New Member

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    The wheel is a Speedcific Perception hub, 24 holes, radial lacing, IRD Niobium 31 rim.

    When I spin the wheel while holding on to the axle ends, there is a definite "thunk." No noise, just something that feels like a bump is being hit inside the hub. (The wheel is almost perfectly true.)

    Any thoughts would be appreciated.
     
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  2. kdelong

    kdelong Well-Known Member

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    Split bearing or a bad ball in the bearing will both cause this problem. So will a bad spot in the bearing race. It almost has to be a bearing because there is nothing else in there except the axle and it isn't moving.
     
  3. FogVilleLad

    FogVilleLad New Member

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    kd, thanks much. I'll contact Speedcific tomorrow re getting replacement parts.
     
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