Results 1 to 16 of 16
  1. #1
    mtbr member
    Reputation:
    Join Date
    Aug 2008
    Posts
    75

    Praxis BB - how many miles?

    I tried searching but didn't find anything.

    At 2500 miles it looks like my praxis BB is shot. I live in SoCal so pretty dry. Only water it really sees is bike wash once a month with easy trickle to wet down the bike and then when rinsing.

    How many miles are others getting out of their Praxis' ? Would you buy again?

  2. #2
    mtbr member
    Reputation:
    Join Date
    Mar 2013
    Posts
    3,628
    1k on mine, doesn't really help you

  3. #3
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Quote Originally Posted by jhardeman View Post
    At 2500 miles it looks like my praxis BB is shot. How many miles are others getting out of their Praxis' ? Would you buy again?
    Are you performing any maintenance at all on your BB? Regular, preventative maintenance will extend the life of any BB.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  4. #4
    mtbr member
    Reputation: honkonbobo's Avatar
    Join Date
    Nov 2006
    Posts
    328
    the bearings are replaceable. you should be able to do that for significantly less than a new BB even with really high quality bearings.

  5. #5
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Four years ago I purchased a new Shimano XT BB and first thing I did (knowing it was not uncommon to find inadequate lubrication on some Shimanos) was to remove the seals and check for proper lubrication. While they did have a marginal amount of lube, I felt it was inappropriate for the abuse we give them. Since they were already off the bike, it just took a few minutes to inject some additional grease and assemble. Like new. That same BB now has 9,600 miles on them.

    Jhard...my suggestion is to try and resurrect your bearings by cleaning well, re-lubing and working them. Like where you ride, I don't see too much water, so I tend to use a slightly thinner grease like Buzzy's Slick Honey. Great stuff. It pretty easy to maintain them, by just pulling the cranks, popping the seals and giving them a shot of grease. Don't even need to remove the BB. Clean up excess grease and re install everything to specs.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  6. #6
    mtbr member
    Reputation:
    Join Date
    Jan 2008
    Posts
    27
    Quote Originally Posted by jhardeman View Post
    I tried searching but didn't find anything.

    At 2500 miles it looks like my praxis BB is shot. I live in SoCal so pretty dry. Only water it really sees is bike wash once a month with easy trickle to wet down the bike and then when rinsing.

    How many miles are others getting out of their Praxis' ? Would you buy again?
    My non drive side bearing lasted me 7 rides. For a total of about 200 miles.

  7. #7
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Quote Originally Posted by mtnbiker67 View Post
    My non drive side bearing lasted me 7 rides. For a total of about 200 miles.
    200 miles is absurd. They must have been void of lubricant. Warranty?
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  8. #8
    mtbr member
    Reputation:
    Join Date
    Jan 2008
    Posts
    27
    Quote Originally Posted by Cleared2land View Post
    200 miles is absurd. They must have been void of lubricant. Warranty?
    No warranty. I did get caught in the rain while riding on decomposed granite which is very grainy. I posted on another thread pertaining to the praxis bb. The response I got from Praxis was very amusing!!

  9. #9
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Rain should have zero effect on the BB bearings. Period. No lubricant is the only cause I can think of barring something not stated.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  10. #10
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Hey OP, you evaporate?
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  11. #11
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    Yep, he evaporated. OP has departed the scene.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  12. #12
    mtbr member
    Reputation:
    Join Date
    Aug 2008
    Posts
    75

    Still here

    Quote Originally Posted by Cleared2land View Post
    Yep, he evaporated. OP has departed the scene.
    Still here...

    To follow up on some real of the comments. I've done no maintenance on the praxis BB. I've ridden standard xt/xtr/ultegra BB's for triple the miles with no issues.

    I hadn't thought about replacing just the bearings, just the whole BB. I will look at that more closely.

    Anyone buy a praxis again? Any other options? Wheels manufacturing looks to have something like the praxis now. CK with adapters is 2x the price of the praxis.

  13. #13
    Magically Delicious
    Reputation: Cleared2land's Avatar
    Join Date
    Aug 2012
    Posts
    1,895
    I will agree that changing just the bearing will be the least cost. No reason to change anything else. But if you only have 2500 miles on these have you thought of warranty? I can't think of any reason that would not be covered unless gross abuse, which I can't imagine unless you left it submerged in a river for a few weeks.

    Try resurrecting the bearings with a simple cleaning and fresh lube job. Let us know what you come up with.

    EDIT...I didn't take in to consideration your time frame. 2,500 miles is about 6 months for me.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  14. #14
    mtbr member
    Reputation:
    Join Date
    Jan 2012
    Posts
    7,659
    https://www.youtube.com/watch?v=hklHC2ae04g
    This vid shows greasing for Hollowtech II bearings. Yours can be similar.
    If yours are gritty clean with Liquid Wrench or kerosene until they are moving smoothly and then add grease.
    They don't have to be removed from the frame.

  15. #15
    mtbr member
    Reputation:
    Join Date
    Nov 2011
    Posts
    130
    Thinking about going with a Chris King 24 bc of the durability
    2014 Giant Anthem X Advanced 1 29er
    2012 Specialized Stumpjumper EVO HT 29er

  16. #16
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    901
    Quote Originally Posted by Edcft View Post
    Thinking about going with a Chris King 24 bc of the durability
    http://forums.mtbr.com/newreply.php?...ply&p=11913609

    King BB is more maintenance.

Similar Threads

  1. Wickworks vs Praxis Chainrings
    By dielectric lab in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 3
    Last Post: 07-13-2014, 11:34 AM
  2. Shimano XTR crank in PF30 BB - Praxis or RWC?
    By st2en in forum All Mountain
    Replies: 0
    Last Post: 05-26-2013, 08:11 PM
  3. praxis works
    By Lowball in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 2
    Last Post: 02-14-2012, 10:43 AM
  4. PRAXIS(buckethead) alert
    By mechastrisand in forum Turner
    Replies: 3
    Last Post: 10-19-2011, 12:22 PM
  5. Praxis- Forged Chain Rings
    By sopwithcamel in forum Titus
    Replies: 9
    Last Post: 06-05-2011, 09:33 AM

Posting Permissions

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

Can't find it? Just search our site!