Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the Newton-Rider International Giveaway for a Foldable Bicycle Helmet


Time for new BB bearings?
#1
I have an integrated bottom bracket (FSA with MegaExo), and it has developed some play in the direction of the spindle. Everything else feels solid...no grittiness when I turn the crank...doesn't rock...just has slight play in the one direction. Is it time for new bottom bracket bearings?
  Reply
#2
is there any preload adjustment?

well made sealed bearings will out last all of us, if they are properly supported and preloaded.
Nigel
  Reply
#3
So I found out what the problem is. According to the guys at my LBS, there is a known problem with FSA cranksets that were made about 5-6 years ago (ironically about the same time mine was made!), where the single bolt that holds the non-drive-side crank arm onto the spindle is slightly too long and it bottoms out before it achieves proper pre-load. The bolt will feel tight, but will start to loosen ever so slightly, allowing the crank to slightly shift along the axis of the spindle. FSA actually sent out a bolt to whomever registered their cranks to fix this problem.

Additionally, when they took mine apart today, they commented that the bearings in the bottom bracket cup had forced themselves onto the taper of the spindle, and are basically press-fitted onto the crank itself, so they are removed from the bottom bracket cups whenever the crank is removed. I had noticed this the few times I took my crank apart, but thought that's how FSA's are designed, so didn't think anything of it.

Anyway, they had an Ultegra crank that didn't have any chainrings on it sitting around because a prior customer didn't want it, so they sold me that, new bottom bracket cups, and transferred my existing chainrings onto it, so I'm back on the road Big Grin
  Reply
#4
Because of the problems I have heard with FSA I really am not a big fan anyways Sad. Thanks for sharing that. Smile
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
12,622
05-26-2015, 02:31 PM
Last Post: eric1023
 
23,493
01-13-2015, 12:13 PM
Last Post: joseph wolf man
 
11,424
11-06-2014, 08:59 AM
Last Post: JanJ
 
4,804
10-20-2014, 04:52 PM
Last Post: DaveM
 
5,153
12-25-2013, 07:11 AM
Last Post: SchwinnMonkey
 
4,828
01-13-2012, 10:06 AM
Last Post: Bill

Forum Jump:

[-]
10 Latest Posts
11-42 cogs on Road bike?
Today 02:04 AM
NewBikeShopper (intro & opinion request)
Today 01:57 AM
1983 Trek 720
Today 12:23 AM
brakes
Yesterday 11:25 PM
Road bike brakes upgrades
Yesterday 01:41 PM
Do you wave to other cyclists?
01-18-2021 02:48 PM
Newton-Rider, a helmet like no other
01-15-2021 05:01 PM
Colnago R41 Handlebar
01-14-2021 10:24 PM
How much do you bike per year?
01-14-2021 04:50 PM
BMX Shoes
01-14-2021 04:42 PM

[-]
Top 5 Posters This Month
no avatar 1. Criminal
20 posts
no avatar 2. RollOn
6 posts
no avatar 3. Henry_G
5 posts
no avatar 4. Yevhen
5 posts
no avatar 5. Zviedrs
4 posts