Advertise on Bikeforums.net



User Tag List

Results 1 to 21 of 21
  1. #1
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Chris King Headset help

    Hi everyone,

    Just purchased a Santa Cruz Blur. The bike arrived almost completely assembled, with just the stem/bars removed (and the front wheel, of course). The CK headset is in place, but I don't know how to remove the bearing cap so that I can get the stem in place. Can anyone help? Thanks in advance, and if I haven't provided enough information, just let me know.

  2. #2
    30 YR Wrench BikeWise1's Avatar
    Join Date
    Aug 2005
    Location
    Oxford, OH
    My Bikes
    Waterford R-33, Madone 6.5, Trek 520
    Posts
    1,959
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Cliver View Post
    Hi everyone,

    Just purchased a Santa Cruz Blur. The bike arrived almost completely assembled, with just the stem/bars removed (and the front wheel, of course). The CK headset is in place, but I don't know how to remove the bearing cap so that I can get the stem in place. Can anyone help? Thanks in advance, and if I haven't provided enough information, just let me know.
    There's a bolt in the middle. Unscrew it.

    If you don't understand how a threadless system works, you should get a grip on that before you kill your headset.

  3. #3
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BikeWise1 View Post
    There's a bolt in the middle. Unscrew it.

    If you don't understand how a threadless system works, you should get a grip on that before you kill your headset.
    Not the piece I'm talking about. I thought the piece with the bolt was referred to as the "top cap"? I'm talking about the bearing cap or "seal" that's located beneath the top cap but above the bearing that fits on the top of the headtube.

    (In the link you provided it looks most like the "adjusting race.")

  4. #4
    Senior Member
    Join Date
    Jan 2012
    Location
    Spokane, WA
    My Bikes
    Specialized Sequoia Elite/Motobecane Fantom Cross Team Ti/'85 Trek 520
    Posts
    2,223
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Picture of your headset?

  5. #5
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    That "bearing cap" just sits on the top of the bearing and isn't fastened in any way. Just use your finger nails to pry it loose. It does have an O-ring inside (see below) so it will be a snug fit.

    BTW, two things about CK headsets;

    1) There is no inverted split cone centering ring. The steerer is centered with an O-ring in the bearing cap so be sure the steerer's top edge is slightly beveled on the outside so as not to damage this O-ring.
    2) The bearing cartridges are not removable from their cups by the owner. They must be relubed in place if you choose to do so.

  6. #6
    30 YR Wrench BikeWise1's Avatar
    Join Date
    Aug 2005
    Location
    Oxford, OH
    My Bikes
    Waterford R-33, Madone 6.5, Trek 520
    Posts
    1,959
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    He shouldn't need to remove the bearing cap to install his stem.

    And HillRider, King changed the design. There is now a split ring.

  7. #7
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Will post a pic shortly. Waiting for wireless to cooperate.

    EDIT: Pic should be available. If too small, I'll resize.

    All right, if that pic is large enough for you guys to see what I'm talking about, the piece in question is the ring/cap currently below the spacers.
    Attached Images Attached Images
    Last edited by Cliver; 02-21-12 at 08:57 AM.

  8. #8
    Senior Member mechBgon's Avatar
    Join Date
    Jul 2002
    Posts
    6,958
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    That ring is a friction fit. If it's the older design, it has an O-ring inside; if it's the newer design, it has a captive split ring. In any case, that part goes below the stem, so as BikeWise1 says, there's no need to remove it at all. Slide it down until it meets the upper headset cup & bearing, and put your stem amongst the spacer stack wherever you want it.

  9. #9
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BikeWise1 View Post
    And HillRider, King changed the design. There is now a split ring.
    That's interesting and thanks for the update. My CK is from '06 and has only the O-ring. I guess it wasn't enough for some forks but it works very well on mine.

  10. #10
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the info, everyone. You guys have confirmed what I thought I needed to do, but the ring didn't want to budge the first time I messed with it and it made me paranoid enough to wonder if there was more to the process than I realized.

  11. #11
    30 YR Wrench BikeWise1's Avatar
    Join Date
    Aug 2005
    Location
    Oxford, OH
    My Bikes
    Waterford R-33, Madone 6.5, Trek 520
    Posts
    1,959
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    That's interesting and thanks for the update. My CK is from '06 and has only the O-ring. I guess it wasn't enough for some forks but it works very well on mine.
    Matt at King tells me it is due to the prevalence of carbon steerers.

  12. #12
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BikeWise1 View Post
    Matt at King tells me it is due to the prevalence of carbon steerers.
    Even more interesting. My CK is installed on an Easton EC90SLX fork with a carbon steerer and has had no problems in nearly 20,000 miles.

  13. #13
    30 YR Wrench BikeWise1's Avatar
    Join Date
    Aug 2005
    Location
    Oxford, OH
    My Bikes
    Waterford R-33, Madone 6.5, Trek 520
    Posts
    1,959
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    Even more interesting. My CK is installed on an Easton EC90SLX fork with a carbon steerer and has had no problems in nearly 20,000 miles.
    Minor variances in size tolerances meant a slightly small steerer would result in a loose headset. Naturally, people were overtightening them to no avail, so the split ring offers the ability to effectively cope with slightly mis-sized steerers.

  14. #14
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by BikeWise1 View Post
    Minor variances in size tolerances meant a slightly small steerer would result in a loose headset. Naturally, people were overtightening them to no avail, so the split ring offers the ability to effectively cope with slightly mis-sized steerers.
    Yeah and mine happened to be a good fit. I was aware of CK's former design's potential problems but I hadn't heard they redesigned it with the more conventional split ring.

  15. #15
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,733
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Interesting,, neither of my 2 CK headsets are for threadless forks,
    so I absorb some of this info for regurgitating , later .

    Got the collet fitted properly in my GripNut headset now..

  16. #16
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Should there be any space between the bearing cap and the top bearing? After setting everything up I was left with the tiniest bit of space between the two; it's even all around and since the bearing is sealed, I'm assuming this is normal as to avoid friction between the parts when turning.

  17. #17
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Mine has the top bearing cap and the upper cup nearly flush with each other and not even a fingernail's worth of clearance. But, mine is the older O-ring design and the inverted cone split ring probably defines the clearance for yours. Be aware that CK recommends a modest (single digit inch-pounds) preload on the bearings when adjusting the top cap bolt.

  18. #18
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    Mine has the top bearing cap and the upper cup nearly flush with each other and not even a fingernail's worth of clearance. But, mine is the older O-ring design and the inverted cone split ring probably defines the clearance for yours. Be aware that CK recommends a modest (single digit inch-pounds) preload on the bearings when adjusting the top cap bolt.
    Yeah, I backed off on the preload after setting everything up - just enough to eliminate play in the fork/headtube.

  19. #19
    Senior Member
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    Posts
    24,778
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Cliver View Post
    Yeah, I backed off on the preload after setting everything up - just enough to eliminate play in the fork/headtube.
    Well, the instructions with my CK say to leave the preload in place when you tighten the stem clamp bolts so the headset remains under slight compression.

  20. #20
    Member
    Join Date
    Feb 2012
    Posts
    42
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by HillRider View Post
    Well, the instructions with my CK say to leave the preload in place when you tighten the stem clamp bolts so the headset remains under slight compression.
    That's what I did. I just meant that I made adjustments to the pressure on the headset afterwards, just to make sure I didn't have anything too tight.

  21. #21
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    35,733
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    After you tighten the stem clamp bolts on your stem you are done
    the pre load on the cap presses down on the stem, spacers and the top ring of the headset.
    the stem gripping the fork steerer keeps that adjustment.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •