Rear Wheel Noise - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 13 (permalink) Old Jul 1st, 2019, 1:14 pm Thread Starter
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Rear Wheel Noise

Right here's a poser: What can make a tapping noise from the rear wheel? With the bike up on the centre stand, if I turn the rear wheel backwards, at the same point each revolution, there is a double tapping noise, as if something is loose in the hub, and it is falling one way, hitting something and then the other.

I have carefully examined the wheel and all bearings turn freely without roughness and everything is present and correct, so what is the reason? The noise only occurs when the wheel is turned backwards, not forwards and the noise can be felt through the wheel spindle and is definitely coming from the rear hub area.

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post #2 of 13 (permalink) Old Jul 1st, 2019, 3:21 pm
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Chain maybe? If it were a bearing it'd double knock both directions. Possible your in the tight spot of chain. Have you checked chain alignment? Also, sprocket fastener tightness? Double sided swinger or single? (Thatd be my alignment question)

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post #3 of 13 (permalink) Old Jul 1st, 2019, 5:03 pm
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Quote:
Originally Posted by Duccout View Post
Right here's a poser: What can make a tapping noise from the rear wheel? With the bike up on the centre stand, if I turn the rear wheel backwards, at the same point each revolution, there is a double tapping noise, as if something is loose in the hub, and it is falling one way, hitting something and then the other.

I have carefully examined the wheel and all bearings turn freely without roughness and everything is present and correct, so what is the reason? The noise only occurs when the wheel is turned backwards, not forwards and the noise can be felt through the wheel spindle and is definitely coming from the rear hub area.
... just be careful when you have the bike in reverse ...






Kidding aside, do you think it may be a problem with the wheel bearings?

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.... If it were a bearing it'd double knock both directions....
hmmm ... not always. I've seen that happen when a bearing is bad or nearly bad.

It could also be an issue with the rear sprocket (wear .. bad or bent tooth).


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Last edited by Rex Coil 7; Jul 1st, 2019 at 5:06 pm. Reason: adding context
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post #4 of 13 (permalink) Old Jul 1st, 2019, 5:40 pm
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cush drive inserts do that.

but this is a spoked wheel?

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post #5 of 13 (permalink) Old Jul 2nd, 2019, 1:39 am Thread Starter
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GT1000, spoked wheels. It cannot be the chain, because the chain will not be in the same point with each revolution of the wheel. I am wondering if it is a damaged tooth on the rear wheel sprocket, but everything looks very good and the sprockets and chain are only 10000 well maintained miles old. Everything is tight and wheels aligned. Maybe it's time for new chain and sprockets, but I'd like to get to the bottom of the noise first.

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post #6 of 13 (permalink) Old Jul 2nd, 2019, 2:06 am
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take the caliper off. because the pads are used the wheel going one way, often they do weird shit backwards.

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post #7 of 13 (permalink) Old Jul 2nd, 2019, 10:54 am
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take the caliper off. because the pads are used the wheel going one way, often they do weird shit backwards.
I would start here. Take caliper off turn wheel and see if it makes the noise. Then move on to the chain, take it off of the sprocket and repeat to see if noise stops.

Good luck finding it. i have a buzz on my 1000s when it hits a certain rpm coming from the front of the bike (instrument gauge cluster, fairing, etc.). It only lasts a fraction of a second, but I can't seem to locate it. If I take the fairing off, it goes away. I started adding things and taking her out to see if it still buzzes but as soon as I put the mirrors back on, the buzz starts back.
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post #8 of 13 (permalink) Old Jul 2nd, 2019, 4:28 pm Thread Starter
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Taking off the caliper was the first thing that I tried - no difference!
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post #9 of 13 (permalink) Old Jul 2nd, 2019, 5:33 pm
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spoke wheels?

checked the bearing in the sprocket mount? sounds like a cracked bearing cage or race.any diff. if you slacken the axle nut? tightened to proper torque?
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post #10 of 13 (permalink) Old Jul 2nd, 2019, 8:41 pm
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My brain wants to think bearing too... Any chance it's a spoke? How many miles on the wheels?

Will it make the sound if you rotate the wheel on the axle off of the bike?

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