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Shimano XT hub and brake movement.

thelonegrooverthelonegroover Posts: 1,073
edited July 2012 in MTB workshop & tech
Recently bought a new Cube LTD SL fitted with Shimano XT hubs and brakes. I notice, while the rear brake is applied there is slight rotational movement of the back wheel. About enough to allow the bike to move 5 mm forward and backwards. We also have a Genesis Core with SLX hub and brakes which does not allow any movement. Is this right.
Planet X Kaffenback 2
Giant Trance X2
Genesis High Latitude 2x10
Planet X n2a
Genesis Core 20

Posts

  • nicklousenicklouse Posts: 81,520 Lives Here
    pads moving in the caliper?

    lose rotor?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • thelonegrooverthelonegroover Posts: 1,073
    I can't see the pads moving, seemed to be play between the rotor and hub, I'll have to check the rotor for lateral movement tonight. thanks.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • cooldadcooldad Posts: 32,601
    Are the hubs splined - there is often a little bit of movement on the splines. Make sure the locknut is tight.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • thelonegrooverthelonegroover Posts: 1,073
    I'll check tonight and then plan a visit to LBS if anything untoward.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • thelonegrooverthelonegroover Posts: 1,073
    There is no lateral movement of the wheel or rotor and every thing seems tight, have also noticed the front is the same. I'll take it to the bike shop for a check up and see if any other XT fitted bike do the same.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • nicklousenicklouse Posts: 81,520 Lives Here
    Lateral? You mean rotational?

    If the wheel moves there has to be some.

    If you can not see any it will be the pads moving in the calipers.

    Normal.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • YeehaaMcgeeYeehaaMcgee Posts: 5,740
    cooldad wrote:
    Are the hubs splined - there is often a little bit of movement on the splines. Make sure the locknut is tight.
    Just to add to that, there should be no movement when the locknut is tight enough.
  • Chunkers1980Chunkers1980 Posts: 8,035
    Also you some times get settlement, forward, so locking the brake and pushing backwards can loosen it.
  • thelonegrooverthelonegroover Posts: 1,073
    nicklouse wrote:
    Lateral? You mean rotational?

    If the wheel moves there has to be some.

    If you can not see any it will be the pads moving in the calipers.

    Normal.

    Lateral means perpendicular to rotation, i.e. if a wheel wobbles it has lateral movement. (Don't need to explain perpendicular do we) :wink:
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • YeehaaMcgeeYeehaaMcgee Posts: 5,740
    Campaign for plain English called... They said lateral movement is side to side movement ;):lol:
  • nicklousenicklouse Posts: 81,520 Lives Here
    nicklouse wrote:
    Lateral? You mean rotational?

    If the wheel moves there has to be some.

    If you can not see any it will be the pads moving in the calipers.

    Normal.

    Lateral means perpendicular to rotation, i.e. if a wheel wobbles it has lateral movement. (Don't need to explain perpendicular do we) :wink:
    Yes the rim has lateral movement so them it would be bearings.

    But I don't think that is what you are saying? As you called it rotational in your first post.

    So which is it?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • thelonegrooverthelonegroover Posts: 1,073
    Thanks for your replies.
    Nicklouse - I thought I'd made it clear, there was no lateral movement. Sorry if that was confusing. Any way, I had the bike shop check things, they tightened the lock nuts and there is no play now, rotational or lateral.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • cooldadcooldad Posts: 32,601
    Thanks for your replies.
    Nicklouse - I thought I'd made it clear, there was no lateral movement. Sorry if that was confusing. Any way, I had the bike shop check things, they tightened the lock nuts and there is no play now, rotational or lateral.
    Anytime.
    cooldad wrote:
    Are the hubs splined - there is often a little bit of movement on the splines. Make sure the locknut is tight.
    But you need to check things - get a cassette tool and DIY. You don't need an LBS to tighten a nut.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
  • thelonegrooverthelonegroover Posts: 1,073
    I agree, however since the bike is brand new and the bike shop is quite local for me, I thought I'd let them sort it.
    Planet X Kaffenback 2
    Giant Trance X2
    Genesis High Latitude 2x10
    Planet X n2a
    Genesis Core 20
  • MccraqueMccraque Posts: 819
    Mine does it too. Caused by the holes of the rotor being marginally larger than the centre lock adaptor on whch they sit.

    Tighten down the locking nut to minimise this - but be careful not to overtighten and strip the thread (I learnt the hard way)
  • cooldadcooldad Posts: 32,601
    His doen't have an adapter, they are splined hubs.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

    Parktools
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