Strange noice from the rear wheel after changing tyre

[Capo79]

Ok guys, I need help to identify this:

I changed my rear tyre yesterday, from Metzeler Z6 to Bridgestone BT021. When I removed the wheel, I found the axle to be somewhat stuck. I had to pound it all the way through to get it out. From the Haynes manual, it says "slide the axle out". No way that I could do that.

When fitting the wheel back on, the axle slid fairly easy. I had to pound it with my hand, but no need for brute force, so to speak. I tightened the bolts all around properly, and made sure the wheel was aligned.

Driving to work today, however, I noticed a buzzing sound around 70-80 km/h. To me, it sounded like a faulty bearing. I just can't imagine that it is the bearing, as the wheel spun fairly easy when the bike was still sitting on the depot stand.

So.. Any suggestions to what it might be? Could it be the tyre itself that makes that sound?

 

[haylo]

Was the wheel balanced? They should be balanced everytime the tyre is changed. Also make sure you didn't forget to put anything back on that you took off. If it's still buzzing after, take it back apart, inspect everything for damage, make sure nothing is scratched/bent/rubbing when it shouldn't be.

 

[Capo79]

No, didn't balance the tyre. A buddy of mine and I did the swap, but we didn't have access to a balancing machine desinged for bikes. However, we made sure that the painted spot was aligned with the valve. Besides, I can't notice any vibrations.

One more thing: The axle was bone dry when I removed it, so I figured that's the way it should be. Was that a stupid thing? Should I've greased it before I put it back in?

 

[600ccdevil]

No, didn't balance the tyre. A buddy of mine and I did the swap, but we didn't have access to a balancing machine desinged for bikes. However, we made sure that the painted spot was aligned with the valve. Besides, I can't notice any vibrations.

One more thing: The axle was bone dry when I removed it, so I figured that's the way it should be. Was that a stupid thing? Should I've greased it before I put it back in?

+1 to that. I'm doing the same thing pretty much. I was wondering if I should re-grease the axles and what kind of grease to use.

 

[abraxas]

You should get that wheel balanced.
A slight difference of say, half a gram, on one side of the wheel over the other, by the time you're doing 60mph picks up weight and becomes a much greater force.
At very least, it's not good. And at worst it's dangerous.

 

[fazer.rider]

OP, you need to 1) balance wheel using the static balance method on youtube. 2) align wheel using the string method. search my posts, i posted a youtube video in another thread regarding wheel alignment.

 

[04fizzer]

It's possible that pounding the axle out with a hammer damaged the bearings. Have them inspected/replaced. Bearings don't like shock loads like that.

 

[Capo79]

Update: Problem solved:thumbup:

Had to slap my forehead when I realized it was the chain that was too tight... *duh*:ban: I also adjusted the aligment so it is somewhat perfect

Anyway, if anyone should experience something similar after putting back the wheel, then it's likely that it is the chain that's too tight.

Thanks everyone with your inputs!

 

[Capo79]

+1 to that. I'm doing the same thing pretty much. I was wondering if I should re-grease the axles and what kind of grease to use.

The answer to that is "no". I checked with the dealer, and they don't grease the axle when they put the whell back on. Just FYI:thumbup:

 

[fazer.rider]

they don't grease the axle when they put the whell back on. Just FYI:thumbup:

they should though...

 

[abraxas]

AH yes, horrid noise too.

Glad you came right :thumbup: