So why is the Drive side rough and none drive see smooth as my ass?
And the why the bearings out of the container that side and none drive side that;s good bearings locked the holder?
(((Everything is laid out as it was in the bottom bracket, bike facing us)))
Can this happen? or did someone swap out the none drive side?
The drive side came lose twice recently, stopped ridding it to do this, clean it up.
Could I have caused this driving it with it a bit lose? or did this cause the lose?
All in all, everything looks amazing, and even the drive side bearings look good, and I don't know if that cup is all that bad?
This is good to go no? I think this all looks super good condition and GTG?
LMK…
by l337g0g0
3 Comments
If you BB can accept a standard bearing just buy a new one if you’re worries about it. If it is a special type of BB that is hard or too expensive to source, then get a set of different sized bearings based on the bearings that are still in their cage and put them in the cage that they fell out of.
Well, it’s not the worst I’ve seen. The roughness in the bearing cup, is called pitting. It means the cup is worn out, and the BB bearlings/spindle will/is not going to hold the adjustment you do when you reinstall everything. The bearings should be in the retainer ring. Why are they out? Probably because they are worn down to a smaller diameter than the retainer is disigned to hold (or the ring is bent open).
This is happening to all bikes, all the time. Someone could have swapped out the non-drive side, but probably didn’t.
It is not dangerous to ride at this time.
More concerning is the wear marks on the spindle where the crank arm makes contact. The real issue is that this bottom bracket is going to either ruin your crank arms, pedals, or both. Depending on what you are riding, those could be much more expensive than just replacing the BB. A new bottom bracket should be somewhere between $20-$35US. If you can’t spare the money, put it back in (with new bearings), and lay off the watt bombs.
Replace all the ball bearings, replace the damaged cup, throw away the “cage” holding the balls in a ring(s). The sole purpose of the cage/retainer thingy is faster assembly – factory robots can’t handle loose ball bearings, but normally equipped humans can. Use sufficient grease in the cups to hold the loose balls in place for reassembly.