Rattling Cause?

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Longshot
Posts: 179
Joined: Tue Apr 24, 2018 14:22 pm

Rattling Cause?

Postby Longshot » Wed Oct 09, 2019 10:13 am

I have a Planet X London Road road bike with Sram Apex 1 gearing and it's developed a severely annoying rattle. It is very much a metallic vibration rattle - i.e. it generally starts on rough road surfaces but tends to go quiet once it smooths out again. It is definitely coming from the back wheel area.

So far, I have tightened up every thing that a) I can find and b) should be tight. No joy. I've had the back wheel off several times and refitted - no change. I've picked the frame up and shaken the bike (both right way up and upside down) but can't recreate the sound so don't believe anything is rattling around inside it.

Next I'm intending to tack off the cassette and re-fit - check spacers and so on. What else are the simple steps I should try? It almost sounds like a loose chain from the noise but I can't understand what would be wrong that would suddenly make that start rattling out of nowhere.

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Step83
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Joined: Wed Mar 13, 2013 17:23 pm

Re: Rattling Cause?

Postby Step83 » Wed Oct 09, 2019 10:16 am

Had similar on a bike, rattly and clicking, turned out to be the cassette was slightly loose. Also check the end caps on the wheel are not too lose.

Fenix
Posts: 4601
Joined: Tue May 26, 2015 14:25 pm

Re: Rattling Cause?

Postby Fenix » Wed Oct 09, 2019 10:23 am

Inner tube lock ring ? Cable bouncing against frame ? Your mate clicking his brake levers behind you ?

(try that one day - it's good fun)

Longshot
Posts: 179
Joined: Tue Apr 24, 2018 14:22 pm

Re: Rattling Cause?

Postby Longshot » Wed Oct 09, 2019 10:25 am

Fenix wrote:Inner tube lock ring ? Cable bouncing against frame ? Your mate clicking his brake levers behind you ?

(try that one day - it's good fun)


:lol:

No to all of the above - checked all of them.

keef66
Posts: 13173
Joined: Tue Apr 29, 2008 09:46 am

Re: Rattling Cause?

Postby keef66 » Wed Oct 09, 2019 10:38 am

Anything in a seat pack / puncture kit which might be rattling?

Longshot
Posts: 179
Joined: Tue Apr 24, 2018 14:22 pm

Re: Rattling Cause?

Postby Longshot » Wed Oct 09, 2019 10:48 am

keef66 wrote:Anything in a seat pack / puncture kit which might be rattling?


Nope. Tested all of that.

Pilot Pete
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Joined: Sun Feb 28, 2010 15:33 pm

Re: Rattling Cause?

Postby Pilot Pete » Wed Oct 09, 2019 19:33 pm

Inner tube valve in the wheel? Chain slap?

PP

david7m
Posts: 525
Joined: Wed May 23, 2018 08:26 am

Re: Rattling Cause?

Postby david7m » Wed Oct 09, 2019 19:39 pm

Bone dry/lose derailleur hanger. Try a smidge of grease between hanger and frame, check its tight.

Pilot Pete
Posts: 1760
Joined: Sun Feb 28, 2010 15:33 pm

Re: Rattling Cause?

Postby Pilot Pete » Wed Oct 09, 2019 22:45 pm

david7m wrote:Bone dry/lose derailleur hanger. Try a smidge of grease between hanger and frame, check its tight.


Bone dry wouldn’t make a difference, loose would mean shifting was all over the place...

PP

david7m
Posts: 525
Joined: Wed May 23, 2018 08:26 am

Re: Rattling Cause?

Postby david7m » Thu Oct 10, 2019 06:25 am

Pilot Pete wrote:
david7m wrote:Bone dry/lose derailleur hanger. Try a smidge of grease between hanger and frame, check its tight.


Bone dry wouldn’t make a difference, loose would mean shifting was all over the place...

PP


It fixed one at LBS. Worth a try for how long it will take.

Longshot
Posts: 179
Joined: Tue Apr 24, 2018 14:22 pm

Re: Rattling Cause?

Postby Longshot » Thu Oct 10, 2019 07:44 am

david7m wrote:Bone dry/lose derailleur hanger. Try a smidge of grease between hanger and frame, check its tight.


Thanks. Added to list of jobs!

redvision
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Joined: Fri Mar 20, 2009 13:12 pm

Re: Rattling Cause?

Postby redvision » Thu Oct 10, 2019 09:52 am

Have you tried a different wheel? That would be my first strategy if I was convinced it was coming from the rear wheel.

Next up would be to check the chain and cassette are not worn.

If the noise is still there then start looking at the front of the bike as well. Bike clicks and creaks are not just annoying, sometimes they sound like they are coming from one area when in fact they are actually coming from another, so check the front wheel, skewers, headset, chainset bolts etc.

veryslowtwitch
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Re: Rattling Cause?

Postby veryslowtwitch » Fri Oct 11, 2019 20:46 pm

?broken rear mudguard, if fitted. SKS at bridge, drive you insane

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Manglier
Posts: 526
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Re: Rattling Cause?

Postby Manglier » Sat Oct 12, 2019 11:15 am

+1 for swapping out the wheel. I had a similar situation on a front wheel. It rattled over rough ground when run tubeless but went quiet again with a tube installed. Fixed it by donating them to the girl child's first road bike running tubed.


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