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Freewheel/cassette completely separated from the wheel, bearings and lock ring fell o

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Freewheel/cassette completely separated from the wheel, bearings and lock ring fell o

Old 06-28-22, 02:44 PM
  #1  
bballer321
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Freewheel/cassette completely separated from the wheel, bearings and lock ring fell o

Hi, looking for any ideas on what this might be as it's a new bike and I had similar issues, so I might want to learn to do this maintenance or get it serviced under warranty....
Just about 5 months ago I bought a new Trek Fx1 Disc bike.

It did well on about 500 miles so far except yesterday when I suddenly heard/felt the rear wheel/freewheel wobbling really bad while I was cycling.

I immediately stopped off the bike and removed the rear wheel from the frame and the ball bearings fell out along with the lock ring seal that contained them inside...

Is this something that's broken on the bike (and worth claiming warranty) or just needs some fixing?

Thank you !

Some photos of the wheel on ibb.co/album/r4CLhR (just add the htp prefix)
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Old 06-28-22, 03:01 PM
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Not sure about the new hubs but the old freehubs were held on with a thin wall hollow bolt. If that bolt broke still would not let all the bearing balls in the freehub fall out though. But it would cause the wheel and cogset to wobble around really massively.

I can't get your link to work. You can post directly to the thread through the "Manage attachments" function below the text box.
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Old 06-28-22, 03:20 PM
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This is a new, five month old Trek FX1? First thing you need to do is take it back to the dealer that you bought it from and at least find out what they say about it. Might be there is something the shop will feel is theirs to correct.







https://ibb.co/album/r4CLhR
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Old 06-28-22, 03:22 PM
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Picture assist.

You have a freewheel. The axle is broken. It is clearly a warranty problem but it is likely to occur again. You might want to replace the wheel with a freehub wheel. Itís stronger and less prone to axle breakageÖlike zero.


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Old 06-28-22, 03:45 PM
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Thanks for the help with the links !

There is also a video here of how it "dances": streamable.com/1e3uji (+ https prefix).

I think something is broken with the freewheel, I doubt it's the actual axle.
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Old 06-28-22, 03:46 PM
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I've had cycles / been cycling daily for 10+ years - first time seeing this :/
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Old 06-28-22, 04:05 PM
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I agree that your axle is broken and second the recommendation to replace your wheel with a freehub/cassette wheel.
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Old 06-28-22, 05:47 PM
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Originally Posted by bballer321 View Post
I've had cycles / been cycling daily for 10+ years - first time seeing this :/
Apparently you never had much experience with freewheel hubs. Broken axles, particularly with 7-speed and above freewheels, were quite common. Heavy riders, rough riding conditions and low cost hubs almost guaranteed them. This bike has 135mm rear spacing which means a lot of axle overhang.

To the OP: Yes, you have a freewheel and I agree the axle is broken. See your dealer for a warranty claim and see if they will exchange the rear wheel for a cassette freehub version.
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Old 06-28-22, 05:53 PM
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Originally Posted by bballer321 View Post
Thanks for the help with the links !

There is also a video here of how it "dances": streamable.com/1e3uji (+ https prefix).

I think something is broken with the freewheel, I doubt it's the actual axle.
https://streamable.com/1e3uji

Video assist. You circled the axle in your pictures. That suggested that it was the axle end that came out. On looking at the video, its the lockring on the freewheel that loosened and came out. Itís still a warranty issue.

That said, a freehub wheel is still a better option.
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