Tubeless - Ball of Sealant Making Noise?
03-12-21, 12:02 PM
#1
Senior Member
Thread Starter
Join Date: Sep 2009
Posts: 946
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 286 Post(s)
Liked 261 Times
in
129 Posts
Tubeless - Ball of Sealant Making Noise?
On a bike I've had for two months, set up tubeless, that I've ridden about 800k, I noticed a sound that I believe is coming from the tire (happens when wheel rotating, more frequent the faster I'm going). Still happens when I'm not pedaling. It's not metallic, more of a light thud. Happened for the first time today, about 1/2 way into my ride. It stopped with 10 minutes of finishing my ride. And in my house when I spin the wheel there isn't a sound. I've ridden a lot in the cold so far this winter, and today was around -1C and got a little warmer and sunnier into the ride.
Can it be that some of the sealant formed into a ball/clbump and was hitting flinging around in the tire (made a sound 1-2x each rotation of the tire)?
Can it be that some of the sealant formed into a ball/clbump and was hitting flinging around in the tire (made a sound 1-2x each rotation of the tire)?
03-12-21, 03:25 PM
#2
Senior Member
Join Date: Jul 2013
Location: Nor-Cal
Posts: 3,767
Bikes: lots
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1958 Post(s)
Liked 2,932 Times
in
1,489 Posts
Take the tire off and find out.
03-13-21, 06:02 AM
#3
Junior Member
Join Date: Sep 2011
Location: San Juan, PR
Posts: 159
Bikes: 1980's Royce Union "fixed wheel", 1995 Trek 370, 406 -wheeled " shopper/minivelo"for running errands, SS Raleigh M60
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Liked 58 Times
in
46 Posts
Do as CX suggested, but check the tire for delamination (when the tread separates from the casing, or threads from the casing break) as I find doubtful that a clump of sealant will move around in it, in particular while spinning faster(centrifugal force; from physics class). Also, check your hub, as it might be somewhat loose ( no sound while wheel is unloaded).
03-13-21, 02:24 PM
#4
Senior Member
Some sealant does do that, that seems fast unless it's Stans race sealant or something. Stans race will tend to make tiny little furry things that look like lint.
We did have one bike with an unknown sealant that sat for long enough the puddles at the bottom of the tire dried out. They broke loose when it was ridden and were flapping around making all sorts of odd sounds.
I'm still curious what type of sealant that was, it dried to the consistency/color of black rubber. Although it remained oily or greasy even mostly dried out. Some of the chunks were 1/4" thick at least.
We did have one bike with an unknown sealant that sat for long enough the puddles at the bottom of the tire dried out. They broke loose when it was ridden and were flapping around making all sorts of odd sounds.
I'm still curious what type of sealant that was, it dried to the consistency/color of black rubber. Although it remained oily or greasy even mostly dried out. Some of the chunks were 1/4" thick at least.
03-13-21, 05:18 PM
#5
Senior Member
Join Date: Jul 2013
Location: Nor-Cal
Posts: 3,767
Bikes: lots
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1958 Post(s)
Liked 2,932 Times
in
1,489 Posts
Stanimals can get pretty big. That's why they're called that.
03-15-21, 02:21 PM
#6
Senior Member
Join Date: Feb 2011
Location: NW Peloponnese, Greece
Posts: 548
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 112 Post(s)
Likes: 0
Liked 25 Times
in
22 Posts
I have had sealant clump from keeping the wheel idle for some time. This clump was stuck in one place (accumulated), and unbalanced the wheel slightly, but did not make a sound.
I would think that different sealant have different dying times that would be also influenced by the temperature and humidity. Best to take the tire off and see, as suggested in previous posts.
I would think that different sealant have different dying times that would be also influenced by the temperature and humidity. Best to take the tire off and see, as suggested in previous posts.
