Results 1 to 22 of 22
  1. #1
    mtbr member
    Reputation:
    Join Date
    Aug 2011
    Posts
    6

    spacers under head tube

    i'm thinking about taking the spacers off between the top of my head tube and my stem and moving them between the fork and the bottom of the top tube on my 4300 to make the frame feel bigger. anyone try this before? thoughts?

  2. #2
    mtbr member
    Reputation: smilinsteve's Avatar
    Join Date
    Jul 2009
    Posts
    8,609
    If I understand you correctly, you can't do that.

    On top of the fork is the headset race that sits firmly on a widened spot on the steer tube. The headset race sits against the bearings on the bottom side of the headset. You can't put spacers under the race, and you can't put spacers on top of the race.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Jul 2009
    Posts
    352
    Will not work do not try. Period

  4. #4
    mtbr member
    Reputation:
    Join Date
    May 2011
    Posts
    25
    Don't listen to those other guys, make sure you post pictures when you're done.

  5. #5
    mtbr member
    Reputation: HighLife420's Avatar
    Join Date
    Apr 2011
    Posts
    646
    is he not talking about moving the headset spacers from top of the stem to the bottom?

    I know you have to have at least 5mm spacer on top of a carbon steerer.

    Ive took some spacer from the bottom to bring my stem down a bit.

    Unless im understanding him incorrectly.

  6. #6
    mtbr member
    Reputation: Slee_Stack's Avatar
    Join Date
    Apr 2010
    Posts
    507
    Quote Originally Posted by HighLife420 View Post
    is he not talking about moving the headset spacers from top of the stem to the bottom?

    I know you have to have at least 5mm spacer on top of a carbon steerer.

    Ive took some spacer from the bottom to bring my stem down a bit.

    Unless im understanding him incorrectly.

    Is 'under head tube' in the title not descriptive enough?

  7. #7
    mtbr member
    Reputation: smilinsteve's Avatar
    Join Date
    Jul 2009
    Posts
    8,609
    Quote Originally Posted by HighLife420 View Post
    is he not talking about moving the headset spacers from top of the stem to the bottom?

    I know you have to have at least 5mm spacer on top of a carbon steerer.

    Ive took some spacer from the bottom to bring my stem down a bit.

    Unless im understanding him incorrectly.
    Yeah, you can do what you said, but that's not what he said.

  8. #8
    mtbr member
    Reputation: HighLife420's Avatar
    Join Date
    Apr 2011
    Posts
    646
    Quote Originally Posted by Slee_Stack View Post
    Is 'under head tube' in the title not descriptive enough?
    It is, but when you read it, it kind of sounded like he meant the spacers...was just checking as to what he exactly meant =)

    He wants to put the spacer between the frame and the fork...which, you obviously cant do.

    Sorry for the mixup.

  9. #9
    check your six
    Reputation: sodak's Avatar
    Join Date
    Oct 2006
    Posts
    4,181
    OP- From what I gathered from your post, you cannot put a spacer under the headtube / on top of the race. However, if you are trying to make the cockpit feel bigger, then I would suggest adding a spacer or two BELOW your stem. That is if your steer tube on your fork is long enough to permit this. This will raise your stem up a bit giving you a taller feel to the bike. Other than that, you could possibly get a longer stem, which will extend your reach slightly making the cockpit longer. Ohh, and you can slide your saddle back on the seat post giving you a few millimeters too.
    "We can always find excuses if we want to find them, but if we really want to do something, we have to just go."

  10. #10
    Fat-tired Roadie
    Reputation: AndrwSwitch's Avatar
    Join Date
    Nov 2007
    Posts
    18,453
    You CANNOT put spacers under the head tube. The bottom cup of the headset has to fit snugly in the head tube, and the steer tube of a fork is a little broader at the bottom to fit the base plate of the headset. There's no safe way to change these relationships.

    I was about to shoot my mouth off about a specific product that addresses the problem safely, but I realize I don't know what kind of headset is on a Trek. Cane Creek makes a version of their S-3 with a taller bottom cup, that would do that for a bike that takes a conventional 1-1/8" threadless headset, and Real World Cycling distributes a bottom cup for bikes with internal headsets and 1-1/8" steer tube forks.

    HighLife420 talks about doing something that's safe and pretty common. If you just want the bars higher, and you don't also want to mess with the head angle, that'll do it. You need to have more spacers above the stem for that to work, of course. You can also flip up the stem, get a higher-angle one, get riser bars, etc.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  11. #11
    Nickel Havr
    Reputation: Eckstream1's Avatar
    Join Date
    Jul 2011
    Posts
    1,177
    Quote Originally Posted by Ray Pinpillage View Post
    Don't listen to those other guys, make sure you post pictures when you're done.
    Quote Originally Posted by William Blake
    Great things are done when men and mountains meet. This is not done by jostling in the street .

  12. #12
    nocturnal oblivion
    Reputation: stumblemumble's Avatar
    Join Date
    Mar 2006
    Posts
    2,329
    You MAY be able to get a taller crown race. Chris King for one makes a 10mm crown race, up from the stock 5mm race.
    But the CK race won't work with most other headsets such as Cane Creek, FSA maybe uses the same bearing chamfer angle? I just don't know.
    "...like sex with the trail." - Boe

  13. #13
    mtbr member
    Reputation:
    Join Date
    Jul 2007
    Posts
    417
    you can look for a headset with a bigger stack height but putting the spacers under your stem would be a cheap and easy fix.
    this has a super tall stack height of 35mm but is only 1.5"

  14. #14
    mtbr member
    Reputation: Flat Ark's Avatar
    Join Date
    Oct 2006
    Posts
    1,646
    There is a bmx "flatland" company out of Japan named Ares Bikes that makes a spacer/extended headset for bikes with 1-1/8" head tubes. Their U.S. website "was" www.aresbykesamerica.com but now it looks like that U.S. store/distributor is gone. I don't think that's really what you are needing though.

    Can you post a photo of your bike? Maybe after seeing a photo it will be easier to offer a possible solution. Kind of sounds like you either need a longer travel fork or a new fork with a longer steerer tube. You just want your handlebars "higher", correct?

  15. #15
    mtbr member
    Reputation: Lurchlee's Avatar
    Join Date
    Jun 2011
    Posts
    99
    Quote Originally Posted by Ray Pinpillage View Post
    Don't listen to those other guys, make sure you post pictures when you're done.
    +1 to this, I can't wait to see this monstrosity

  16. #16
    mtbr member
    Reputation:
    Join Date
    May 2015
    Posts
    3
    It can be done. Specialized uses a 10mm machined aluminum spacer between the fork crown and the bottom cup of the headset on their Stumpjumper FSR Expert Carbon EVO 27.5 (See review on pg 43 of Aug 2014 issue of Mountain Bike Action mag). It gives you an effective head tube angle about 1 degree slacker. Not sure if such a piece is available after-market or if a Specialized dealer could order the part in for you, but it is not impossible.

  17. #17
    mtbr member
    Reputation: Gasp4Air's Avatar
    Join Date
    Jun 2009
    Posts
    3,277
    DELETE - totally missed the date. Zombie thread ate my brain, I guess.
    Last edited by Gasp4Air; 4 Weeks Ago at 08:22 PM.
    Use it, use it, use it while you still have it.

  18. #18
    Turns right to go left
    Reputation: 410sprint's Avatar
    Join Date
    Oct 2012
    Posts
    589
    Eight year old zombie tread.....

  19. #19
    since 4/10/2009
    Reputation: Harold's Avatar
    Join Date
    Dec 2003
    Posts
    24,726
    Quote Originally Posted by element_rider View Post
    It can be done. Specialized uses a 10mm machined aluminum spacer between the fork crown and the bottom cup of the headset on their Stumpjumper FSR Expert Carbon EVO 27.5 (See review on pg 43 of Aug 2014 issue of Mountain Bike Action mag). It gives you an effective head tube angle about 1 degree slacker. Not sure if such a piece is available after-market or if a Specialized dealer could order the part in for you, but it is not impossible.
    You necro'd a 7+yr old thread for that?

  20. #20
    mtbr member
    Reputation: dbhammercycle's Avatar
    Join Date
    Nov 2011
    Posts
    3,214
    Klatu barada nananana/necktie/necro'd...
    I don't know why,... it's just MUSS easier to pedal than the other ones.

  21. #21
    mtbr member
    Reputation: Coal-Cracker's Avatar
    Join Date
    May 2010
    Posts
    392
    Quote Originally Posted by dbhammercycle View Post
    Klatu barada nananana/necktie/necro'd...
    .

    Sent from my SM-N960U using Tapatalk

  22. #22
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    7,581
    Name:  images.jpg
Views: 145
Size:  6.0 KB
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

Similar Threads

  1. Lefty Steer tube too short for head tube, what are my options?
    By XC Dawg in forum Shocks and Suspension
    Replies: 3
    Last Post: 10-22-2009, 02:51 PM
  2. Replies: 11
    Last Post: 06-22-2009, 01:56 PM
  3. Headsets with spacers below head tube?
    By mattbryant2 in forum General Discussion
    Replies: 2
    Last Post: 06-10-2008, 04:48 PM
  4. Spacers For Prophet Head Tube
    By mzungo in forum Cannondale
    Replies: 4
    Last Post: 03-25-2007, 10:49 AM
  5. steer tube spacer under bearing race/head tube?
    By HuffyMan in forum Shocks and Suspension
    Replies: 7
    Last Post: 10-31-2006, 10:24 PM

Members who have read this thread: 92

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2019 VerticalScope Inc. All rights reserved.