Two Signs Indicating You Got A Bent Rear Axle On A Bike Wheel | 4K

In this video I give tips how to see if you got a bent rear axle on your road, hybrid or mountain bike.
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[@I967]

I also thought it could be a bent axle, but after changing my axle for a new one nothing changed, the wobble is EXACTLY the same.
There is nothing wrong with the bike in the video. All the unevenness you see is due to machining imperfection.
The freewheel wobbles not because of the axle, but because the thread on the hub on which it is mounted, is not machined on perfectly centered.
If you do a search here on YT for "freewheel wobble," you will find out that this wobble is common and normal on freewheels. It does not affect shifting (if your derailleurs are properly adjusted).

[@IvansBikesBmws]

@I967 In some cases it is normal, but I seen it fail on Chinese build ups.

[@Michael-ri2eh]

Thank you for your post I'm dealing with the same problem 😢

[@IvansBikesBmws]

Michael glad I was able to help. Consider subscribing/hitting suprchat! Cheers and happy cycling 🚲.

[@sameenakausar1020]

Thanks a lot ,!

[@IvansBikesBmws]

You are welcome

[@Aubreykun]

I've never seen someone mention this as a way to tell if the axle is bent. Seems like a good tip, but I wonder if a worn or poorly-made cassette or freewheel could also cause this. Though either cause would require at minimum removing the wheel and possibly disassembling it... and at that point the axle could be checked with a straightedge anyway.

[@IvansBikesBmws]

Thanks for the comment. To be honest, I usually come over a freewheel that has dull teeth with very little wear on it. Once in a while , I may run into a freewheel that has sharp teeth and is worn out. In that case the chain starts skipping, but it won't make that eccentric movement that I demonstrated in that video.

[@Aubreykun]

@@IvansBikesBmws It might depend on the specific makeup of the cogs and chain used. I could see a bike that's only been on a trainer and kept clean having the guts of the free-spin mechanism wearing down, one that was improperly hardened from the factory (or just cheap) getting damaged prematurely, or a freehub which has gone through multiple cassette changes and has worn out.

[@IvansBikesBmws]

@@Aubreykun I agree 100% .

[@Manuee_09]

I just bought a brand new bike and it does this crap

[@IvansBikesBmws]

@@Manuee_09 I would go back to exchange it. What brand is it and what groupset is on it?

[@Thefakisgoinon]

How is this resolved? I have the same problem

[@IvansBikesBmws]

New axle

[@MrThatnativeguy]

How do I know if my axle bearings are very tired?

[@IvansBikesBmws]

A good question. I would open up the 'cups' and inspect the grease along with bearings. I usually do that in the winter when bikes are less used.

[@unknownos2442]

hello sir i feel more resistance in peddling and vibration in cycle , what could be the reason?

[@IvansBikesBmws]

First check the bottom bracket and wheel hubs for the play. Gotta be one of those two.

[@unknownos2442]

@@IvansBikesBmws actually this happened after i replaced tires.
can this happen if we have tighten bolts too much of axle?

[@IvansBikesBmws]

@@unknownos2442
Yup. Tires could be rubbing your folks. Inspect wheels and tires