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Ball bearing fell into frame

Old 11-28-20, 06:33 PM
  #1  
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Ball bearing fell into frame

After I put my bike together after upgrading the headset into sealed bearings, I realized one piece of ball fell into the frame, probably went in the down or top tube.

I have sealed BB bearing so it shouldn't cause any issues with the BB.

The ball is loose and when I hit bumps or jump the kerb, it makes a quite bit of noise.

Should I be worried the loose ball could cause significant wear in the aluminum frame in the long run?

I'll remove it eventually when I replace the BB bearing or headset bearings but really don't want to do it now with the amount of work involved in removing the BB or fork, although I have all the right tools for the job.

It will probably be another 3 to 5 years before the BB or headset needs servicing, remove the ball now or just leave it alone because the ball bouncing around can't really hurt the frame for the next 5 years?
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Old 11-28-20, 06:35 PM
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why not use a magnet on a string and fish it out ?


Mark Petry
Bainbridge Island, WA
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Old 11-28-20, 06:38 PM
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Originally Posted by mpetry912 View Post
why not use a magnet on a string and fish it out ?


Mark Petry
Bainbridge Island, WA
I would still have to remove BB or headset for that especially if it fell in the downtube.
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Old 11-28-20, 07:02 PM
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Could you lower the magnet through the seat tube after removing the seatpost?
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Old 11-28-20, 09:10 PM
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Dribble some glue into the same hole the bearing went into, then tilt the frame so it rolls into the glue. Give it time to set up. Worked for me.
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Old 11-28-20, 09:16 PM
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Originally Posted by thumpism View Post
Dribble some glue into the same hole the bearing went into, then tilt the frame so it rolls into the glue. Give it time to set up. Worked for me.
Saw a frame builder do this in a repair (not his frame) with that foam spray for insulation:https://www.homedepot.com/p/GREAT-ST...B&gclsrc=aw.ds
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Old 11-28-20, 11:26 PM
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Originally Posted by thumpism View Post
Dribble some glue into the same hole the bearing went into, then tilt the frame so it rolls into the glue. Give it time to set up. Worked for me.
It actually fell in the hole inside the headtube while I was working with the fork removed

Which means I really have to remove the fork or BB to take it out.
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Old 11-28-20, 11:38 PM
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The time between the first post and this post in this thread is just over five hours. Taking out the fork, turning the bike to drop the bearing out, and putting everything back together (properly) would take about 20 minutes.

Try to stem the tide of wasted time, and just take care of it.
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Old 11-29-20, 12:29 AM
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Originally Posted by HillRider View Post
Could you lower the magnet through the seat tube after removing the seatpost?
Tried it, totally didn't work. I even tried to rotate and shake the bike while stood up (bike pointing skywards and also upside down and the ball did not fall through. The ball probably can't get through the BB.

Definitely need to remove the bb or fork.

Is it okay if I just keep it there until the next headset or BB service? I really don't mind the clicking noises.
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Old 11-29-20, 12:54 AM
  #10  
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Originally Posted by DrIsotope View Post
The time between the first post and this post in this thread is just over five hours. Taking out the fork, turning the bike to drop the bearing out, and putting everything back together (properly) would take about 20 minutes.

Try to stem the tide of wasted time, and just take care of it.
Takes a lot longer for me. Way way longer including paranoid checking post rides. I deal with mild OCD

Anxious that I might make a mistake in the process. So that's why I want to know if a ball bouncing around inside the aluminum frame can cause any problems, apart from the noise it makes?
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Old 11-29-20, 06:08 AM
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Originally Posted by cubewheels View Post
...I want to know if a ball bouncing around inside the aluminum frame can cause any problems, apart from the noise it makes?
Not under any realistic conditions. The bb canít get up to speed enough to impact hard enough to make any difference.
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Old 11-29-20, 06:52 AM
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Originally Posted by cubewheels View Post
It actually fell in the hole inside the headtube while I was working with the fork removed.

Which means I really have to remove the fork or BB to take it out.
Same thing happened to mine.

So do it already. Since you reassembled it before asking for advice, it's either that or live with it.

Seriously, if it's in the top tube you might be able to remove the seatpost to learn if there's a similar hole at that end of the top tube and you can try the glue or magnet trick there. If it turns out to be in the downtube and you don't want to remove the fork or BB just drill a hole in the tube and let it fall out.
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Old 11-29-20, 07:06 AM
  #13  
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Originally Posted by dabac View Post
Not under any realistic conditions. The bb can’t get up to speed enough to impact hard enough to make any difference.
The thousands of weak bounces I'm a bit worried about, they might wear the aluminum down.

Or maybe not? I forgot about the hard aluminum oxide layer that forms over "naked" aluminum. Guess I'll just have to deal with it (although it makes the bike sound like an airplane in severe chop when I'm hitting bumpy sections). Hoping I will not forget about it in the next BB or headset fix.
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Old 11-29-20, 07:16 AM
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Originally Posted by thumpism View Post
Same thing happened to mine.

So do it already. Since you reassembled it before asking for advice, it's either that or live with it.

Seriously, if it's in the top tube you might be able to remove the seatpost to learn if there's a similar hole at that end of the top tube and you can try the glue or magnet trick there. If it turns out to be in the downtube and you don't want to remove the fork or BB just drill a hole in the tube and let it fall out.
I actually didn't know a ball got inside until I took the bike for a test ride by then, it's too late.

I have another bike where a loose BB ball fell in the chainstay while putting new balls which I became immediately aware of and retrieved with magnet before I re-assembled the BB and crankset. That bike will definitely get a sealed BB bearing replacement the next time around. Getting mighty annoyed with loose balls even if I already put quite excessive amounts of grease for it to stick.
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Old 11-29-20, 07:24 AM
  #15  
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If you forget about it prior to the next service than it isn't much of a problem.

As for wearing, think of it as shot peening. It will make the frame stronger, LOL.

The glue trick does work. In the recumbent world it is common to drill out seat post rivets causing the far end to drop into the sealed main tube. Instead of glue one could use frame saver, which is basically just a gooey linseed oil. A squirt or two of that would probably trap the bugger.

I would hesitate to use spray foam because it could trap water.
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Old 11-29-20, 10:43 AM
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Originally Posted by cubewheels View Post
After I put my bike together after upgrading the headset into sealed bearings, I realized one piece of ball fell into the frame, probably went in the down or top tube.

I have sealed BB bearing so it shouldn't cause any issues with the BB.

The ball is loose and when I hit bumps or jump the kerb, it makes a quite bit of noise.

Should I be worried the loose ball could cause significant wear in the aluminum frame in the long run?

I'll remove it eventually when I replace the BB bearing or headset bearings but really don't want to do it now with the amount of work involved in removing the BB or fork, although I have all the right tools for the job.

It will probably be another 3 to 5 years before the BB or headset needs servicing, remove the ball now or just leave it alone because the ball bouncing around can't really hurt the frame for the next 5 years?
a ball bearing bouncing around inside your frame isnít going to do any damage to anything except your mental health. Personally Iíd just take care of it because the noise would bug me. Pulling the fork - especially a threadless fork - is trivial compared to five years of listening to that little fecker rattling around
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Old 11-29-20, 09:56 PM
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Originally Posted by Pop N Wood View Post
As for wearing, think of it as shot peening. It will make the frame stronger, LOL.
LOL! I just looked up shot peening, wow that is cool! Now the BB weld is going to be a tiny bit stronger! Ironic isn't it?

The glue trick does work. In the recumbent world it is common to drill out seat post rivets causing the far end to drop into the sealed main tube. Instead of glue one could use frame saver, which is basically just a gooey linseed oil. A squirt or two of that would probably trap the bugger.

I would hesitate to use spray foam because it could trap water.
I'd probably just wait instead of drill a hole
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Old 11-29-20, 10:06 PM
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Originally Posted by Litespud View Post
a ball bearing bouncing around inside your frame isnít going to do any damage to anything except your mental health. Personally Iíd just take care of it because the noise would bug me. Pulling the fork - especially a threadless fork - is trivial compared to five years of listening to that little fecker rattling around
Heck yeah. The sound is very distinct though so you'll know, it's the ball, not from anything else. I've decided to just leave it alone until the next bearing replacement for headset or BB.
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Old 11-29-20, 10:44 PM
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You should be able to move it around or hold onto it with a magnet since the frame is aluminum.

You could just tape a magnet to your frame and get it stick to it and stop worrying.

Or maybe is small enough to make it through a water bottle boss or something similar?

You could always just scrap it and buy something without a bearing bouncing arond as well if you needed an excuse for a new bike.
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Old 11-29-20, 11:48 PM
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Can you turn the bike upside down and see if it drops out the seat tube?
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Old 11-30-20, 12:32 AM
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At least now you won’t have to buy a bell.

John
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Old 11-30-20, 02:50 AM
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Originally Posted by 70sSanO View Post
At least now you wonít have to buy a bell.

John
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Old 11-30-20, 06:42 PM
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Originally Posted by Bill Kapaun View Post
Can you turn the bike upside down and see if it drops out the seat tube?
Didn't work. Ball can't get past the BB bearing set. Will definitely have to remove BB bearing to get it out.
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Old 11-30-20, 06:43 PM
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Originally Posted by 70sSanO View Post
At least now you wonít have to buy a bell.

John
It only makes a sound in bumpy roads or when hopping the front wheel!
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Old 11-30-20, 07:47 PM
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Originally Posted by 70sSanO View Post
At least now you wonít have to buy a bell.

John
LOLó-the best answer yet!! Totally agree...plus with that rattle going on youíll never notice a squeaky bb or crank . Enjoy!
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