Advertise on Bikeforums.net



User Tag List

Results 1 to 14 of 14
  1. #1
    Newbie
    Join Date
    Oct 2005
    Posts
    1
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    How do you remove (3 piece) crank bearings?

    How do you remove (3 piece) crank bearings?
    I'm having trouble removing the crank housing/bearing from a new frame i've bought.

  2. #2
    "Uh-uh. Respek Knuckles." hypersnazz's Avatar
    Join Date
    Jun 2005
    Location
    CA
    My Bikes
    '06 LeMond Versailles, '04 S&M Beringer, '03 Quamen Bowls, '68 Raleigh Grand Prix (converted to fixed gear)
    Posts
    1,094
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Depends entirely on the crankset. Typically you take a flat punch (or a big screwdriver) and very carefully tap them out with a hammer. NEVER tap on the seals, only on the races, and tap evenly around the circumference of the bearing unit. Basically if you hit the seals, the bearings are f*cked.

  3. #3
    Senior Member sxe fbm rider's Avatar
    Join Date
    Aug 2004
    Location
    Philadelphia
    My Bikes
    Fbm Night Train, Fixed Club Fuji(so sexy).
    Posts
    1,259
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I accidently punched a sizable hole in my friends bearing seal. I told him it was nothing to worry about and he doesent know anything so he believed me.

  4. #4
    39yo w/Cruiser Darin's Avatar
    Join Date
    Aug 2005
    Location
    Dover, PA
    My Bikes
    Haro BMX Cruiser
    Posts
    497
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If you punch a hole in the seal, just fill it with sand and duct tape over it.
    I play guitar in a country band, this is my page on the band website.
    http://www.chriswoodwardmusic.com/darinmusic.htm
    http://www.chriswoodwardmusic.com/images/bmxav2.jpg

  5. #5
    I'm switching to quads racersk66's Avatar
    Join Date
    Sep 2005
    Location
    hampshire
    My Bikes
    BIKES-Specialized vegas custom built, Cannondale gem 900, Gt santa ana 1982 QUADS- 2001 Kawasaki Lakota Sport, 05 Yamaha Raptor 660r, 04 Yamaha YFZ 450, DIRTBIKES- 03 Yamaha yz 250
    Posts
    565
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by sxe fbm rider
    I accidently punched a sizable hole in my friends bearing seal. I told him it was nothing to worry about and he doesent know anything so he believed me.
    i did that to my best freinds bike i told him you where supposed to that he believed me

  6. #6
    39yo w/Cruiser Darin's Avatar
    Join Date
    Aug 2005
    Location
    Dover, PA
    My Bikes
    Haro BMX Cruiser
    Posts
    497
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You guys are mean. How much would it cost to replace it if you ruin it. And how can you be their friend if you lie to them?

    I guess around $29. The going price for friendship.
    http://www.bikepro.com/bmx/bmxbb.html
    Last edited by Darin; 10-22-05 at 07:02 PM.
    I play guitar in a country band, this is my page on the band website.
    http://www.chriswoodwardmusic.com/darinmusic.htm
    http://www.chriswoodwardmusic.com/images/bmxav2.jpg

  7. #7
    "Uh-uh. Respek Knuckles." hypersnazz's Avatar
    Join Date
    Jun 2005
    Location
    CA
    My Bikes
    '06 LeMond Versailles, '04 S&M Beringer, '03 Quamen Bowls, '68 Raleigh Grand Prix (converted to fixed gear)
    Posts
    1,094
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by sxe fbm rider
    I accidently punched a sizable hole in my friends bearing seal. I told him it was nothing to worry about and he doesent know anything so he believed me.
    So...I don't get where you're going with this. Am I supposed to try and figure out who the bigger idiot is?

    Quote Originally Posted by racersk66
    i did that to my best freinds bike i told him you where supposed to that he believed me
    Well, that solves that. Here's the biggest idiot, for basically repeating what the guy before JUST SAID. You = 0% at life.

  8. #8
    Senior Member Brian's Avatar
    Join Date
    Nov 2004
    Location
    Between the mountains and the lake.
    My Bikes
    8 bikes - one for each day of the week!
    Posts
    16,745
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Darin
    If you punch a hole in the seal, just fill it with sand and duct tape over it.

  9. #9
    39yo w/Cruiser Darin's Avatar
    Join Date
    Aug 2005
    Location
    Dover, PA
    My Bikes
    Haro BMX Cruiser
    Posts
    497
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Expatriate
    I happen to know, duct and BMX bikes are a perfect match.....
    I play guitar in a country band, this is my page on the band website.
    http://www.chriswoodwardmusic.com/darinmusic.htm
    http://www.chriswoodwardmusic.com/images/bmxav2.jpg

  10. #10
    Senior Member
    Join Date
    Aug 2005
    Location
    Grosse pointe michigan
    My Bikes
    Haro F2 and S&M black bike
    Posts
    98
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i took the spindle and made it go crooked and hit the spindle to knock the bearing out and my bike works fine no problems u could give that a try
    um yeah......

  11. #11
    Came Up!
    Join Date
    Feb 2004
    Location
    PDX/ELP
    My Bikes
    grim reaper 2/ fit s3
    Posts
    440
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    depends on what kind of bb you have.

  12. #12
    Senior Member
    Join Date
    Feb 2005
    Posts
    541
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    This applies to non euro bbs; Remove the cranks, remove the axle, put a socket extension half way through the bb and push/knock it down. That should move the spacer out of the way so that you can see the inner race of the bearings. Wail away with the socket extension on the bearing race till it comes out.
    If you damage the seal remove it, you don't really need a seal on the inside of a bb anyway.

  13. #13
    Senior Member
    Join Date
    Dec 2004
    Location
    jamaica queens nyc
    My Bikes
    standard sta-r ox mark4
    Posts
    1,734
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Darin
    I happen to know, duct and BMX bikes are a perfect match.....

    tube patches

  14. #14
    Live To Ride Ride To Live FuzzyRyder's Avatar
    Join Date
    Jun 2005
    Location
    Winnipeg, Manitoba
    My Bikes
    Fit flow
    Posts
    2,639
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I tried patching my tube with duct tape once, didn't work out so well....
    BMX For Life

Posting Permissions

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