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Headset cups

bennett_346bennett_346 Posts: 5,029
edited October 2012 in MTB workshop & tech
Out of curoscity, why do headset cups have to be pressed in, why can't they screw in like BB cups?

Just a thought.

Posts

  • The RookieThe Rookie Posts: 27,804
    Some BBs have caught up and are now pressed in.....

    You need a thread somewhere for preload, headsets used the steered, BBs the shell as doing it in the axle would be pretty much impossible on cottered axles.
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
  • nicklousenicklouse Posts: 50,675 Lives Here
    Out of curoscity, why do headset cups have to be pressed in, why can't they screw in like BB cups?

    Just a thought.
    why do BB cups even need to be threaded?

    it just adds cost.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • bennett_346bennett_346 Posts: 5,029
    Just a bit easier to fit than press fitting.
  • cooldadcooldad Posts: 32,599
    nicklouse wrote:
    Out of curoscity, why do headset cups have to be pressed in, why can't they screw in like BB cups?

    Just a thought.
    why do BB cups even need to be threaded?

    it just adds cost.
    Throwback to when BB's were a unit (I suppose many still are) or loose balls and needed to stay in place.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

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  • The RookieThe Rookie Posts: 27,804
    Throwback to cup and cone BB's, (came long before units!) and needed something threaded, BB shell easier than axle.
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
  • nicklousenicklouse Posts: 50,675 Lives Here
    cooldad wrote:
    nicklouse wrote:
    Out of curoscity, why do headset cups have to be pressed in, why can't they screw in like BB cups?

    Just a thought.
    why do BB cups even need to be threaded?

    it just adds cost.
    Throwback to when BB's were a unit (I suppose many still are) or loose balls and needed to stay in place.
    nope. many lose ball have press fit cups.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • nicklousenicklouse Posts: 50,675 Lives Here
    Just a bit easier to fit than press fitting.
    How?

    press fitting is simple and easy to remove.

    but then anything is if you have the correct tools.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • The RookieThe Rookie Posts: 27,804
    Like an 'ammer......sorted!
    Current steed - Whyte T129, 2013 frame, mongrel Revelations, Giant dropper, Stans S1 wheelset. 12, Magura Trail Sport brakes, 1x11. 12.8Kg
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