Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

should I replace my mega exo BB bearings with ceramic?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

should I replace my mega exo BB bearings with ceramic?

Old 09-11-13, 11:31 AM
  #1  
billh
Senior Member
Thread Starter
 
billh's Avatar
 
Join Date: Nov 2004
Location: St Louis, MO
Posts: 1,254
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
should I replace my mega exo BB bearings with ceramic?

I've concluded I need to replace my mega exo gossamer bottom bracket bearings on my 2006 Ridley Supercross. there is a pretty good sticking point after playing with different tightness on the dust cap screw. plus I can pop out the drive side bearing cartridge by hand, which cant be good. my question: should I replace with ceramic bearings? part of my concern is being able to match the new ceramic mega exo BB to the existing FSA Gossamer crank since I've read the mega exo BB is specific to the model of crank, that is, not all mega exo BB are compatible, even within FSA mega exo BB. The crank arm says CK 6020, but not sure that is enough to order the right BB online. Guess I can always ask the shop but that is more bucks. Alternatively, I'm pretty sure I can order the correct steel bearing mega exo replacement. So from my view, is ceramic worth the extra hassle of possibly several online order and returns, me paying the shipping. Advice, suggestions? anyone have a link to a compatible ceramic BB? bh
billh is offline  
Old 09-11-13, 12:09 PM
  #2  
Secret Squirrel
Senior Member
 
Join Date: Dec 2005
Location: Southern Calif
Posts: 587
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked 34 Times in 20 Posts
I have gone through a similar exercise. My FSA Carbon SL-K crankset ceramic bottom bracket was available from Bikewagon for cheap ($80.00) so I decided to jump on the deal. https://www.bikewagon.com/fsa-bb-8000...sealed-english
Cross Check Chart:
https://www.bike-components.de/bedien...structions.pdf
Installed the BB-8010 bottom bracket on my Litespeed and did not feel any real difference. The ceramic BB was lighter,but it didn't feel any smoother
I purchased a FSA Gossamer Compact Crankset with MegaExo Bottom Bracket to install on my other bike. It came with a BB-6000 Bottom bracket which I replaced with the BB-8000 (non ceramic) Bottom bracket. So far no problems with the Gossamer crankset.
Secret Squirrel is offline  
Old 09-11-13, 01:16 PM
  #3  
billh
Senior Member
Thread Starter
 
billh's Avatar
 
Join Date: Nov 2004
Location: St Louis, MO
Posts: 1,254
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
thanks that chart is super-helpful . . . it shows that the Gossamer crankset takes only the BB-6000, but you were able to install a BB-8000 ceramic bearing BB on a Gossamer crankset? I have the 130 bcd Gossamer Megaexo CK-6020 . . . if I can be sure that crankset takes the BB-8000 ceramic, that would be a great help.
billh is offline  
Old 09-11-13, 01:36 PM
  #4  
Secret Squirrel
Senior Member
 
Join Date: Dec 2005
Location: Southern Calif
Posts: 587
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked 34 Times in 20 Posts
I have the Gossamer compact crankset (110 BCD). I have not installed the ceramic Bearing BB on this crankset. I used the non ceramic bearing BB from the stock SL-K crankset. The SL-K BB was constructed differently than the Gossamer BB. The overall length of the SL-K BB was a couple of Millimeters longer than the Gossamer BB. After installation on my bike, the bearing preload was adjusted and the bolts locked in place with no problems. In other words, it was not a perfect fit. The chart is correct in the cross application, but due to Frame BB shell width differences, it fit on my frame.
My previous thread response was more to show that a ceramic bearing upgrade does not yield a huge performance improvement. I would probably stick to the BB-6000 as a better value cost replacement.
Secret Squirrel is offline  
Old 09-11-13, 03:32 PM
  #5  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,297

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1427 Post(s)
Liked 1,059 Times in 708 Posts
Ball/roller bearings are already so efficient that going from steel to ceramic will yield an imperceptible improvement in friction. It will however be a significant drain on your wallet.
dsbrantjr is offline  
Old 09-11-13, 03:37 PM
  #6  
FastJake
Constant tinkerer
 
FastJake's Avatar
 
Join Date: May 2010
Location: Wisconsin
Posts: 7,953
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 184 Post(s)
Liked 89 Times in 74 Posts
Originally Posted by dsbrantjr View Post
Ball/roller bearings are already so efficient that going from steel to ceramic will yield an imperceptible improvement in friction. It will however be a significant drain on your wallet.
+1 Ceramic bearings offer no significant improvement in smoothness/efficiency/power or whatever else marketing departments make up.

However, if you're having problems now, was your BB shell faced before the BB was installed? Also, I've heard very few good things about those FSA Gossamer cranks. If it were me I'd junk the whole setup and put on a Shimano Hollowtech II crank.
FastJake is offline  
Old 09-11-13, 05:49 PM
  #7  
3alarmer 
Friendship is Magic
 
3alarmer's Avatar
 
Join Date: Nov 2010
Location: The Big Tomato
Posts: 21,435

Bikes: old ones

Mentioned: 298 Post(s)
Tagged: 0 Thread(s)
Quoted: 24400 Post(s)
Liked 8,163 Times in 5,704 Posts
.........................I find threads like this absolutely astonishing.

I suppose the answer depends upon whom you ask. I would not do so personally, but I am not you.
__________________
3alarmer is offline  
Old 09-12-13, 03:33 PM
  #8  
billh
Senior Member
Thread Starter
 
billh's Avatar
 
Join Date: Nov 2004
Location: St Louis, MO
Posts: 1,254
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
as a result of this thread, I purchased a new BB-6000 mega exo instead of ceramic BB-80xx that wouldn't have fit . . . thanks!
billh is offline  
Old 09-12-13, 03:43 PM
  #9  
Secret Squirrel
Senior Member
 
Join Date: Dec 2005
Location: Southern Calif
Posts: 587
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 93 Post(s)
Liked 34 Times in 20 Posts
Good Choice
Secret Squirrel is offline  
Old 09-13-13, 07:41 AM
  #10  
rydabent
Senior Member
 
rydabent's Avatar
 
Join Date: Apr 2010
Location: Lincoln Ne
Posts: 9,716

Bikes: RANS Stratus TerraTrike Tour II

Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 3114 Post(s)
Liked 959 Times in 575 Posts
If you race and are consistantly in the top 3 then maybe yes. If not it is a total was of money. At that level of bearing a ceramic might get you 10 feet in a 100 mile race.
rydabent is offline  
Old 09-13-13, 08:14 AM
  #11  
miamijim
Senior Member
 
miamijim's Avatar
 
Join Date: Aug 2003
Location: Tampa, Florida
Posts: 14,086
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 403 Post(s)
Likes: 0
Liked 86 Times in 66 Posts
Setting aside the whole effeciency thing.....

Do you ride in the rain or get the BB area wet? If so then yes, go for the ceramic. I've seen many, many steel bearing assemblies that have gone bad to water penetration.
miamijim is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fujiraf
Bicycle Mechanics
2
05-15-17 10:03 PM
spdracr39
Bicycle Mechanics
7
03-04-14 10:01 AM
Tandem Tom
Tandem Cycling
14
09-06-13 11:17 AM
buffalowings
Bicycle Mechanics
9
03-29-13 09:56 AM
Tavish
Bicycle Mechanics
4
03-23-12 05:15 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.