Go Back  Bike Forums > Bike Forums > General Cycling Discussion
Reload this Page >

Guess I *won't* be going tubeless

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Guess I *won't* be going tubeless

Old 10-05-18, 09:26 AM
  #1  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Guess I *won't* be going tubeless

I found this scene when I went out to ride this morning:



Gives me the willies thinking about the carnage if that would have happened going 40 miles per hour somewhere. Wheels are Roval SLX 24, tires are Specialized Roubaix Pro. Both are supposed to be tubeless. I've only been running tubeless since last Saturday and neither wheel sealed very well, but that's not uncommon from what I read. The rear would lose about 10 pounds over the course of a 2 hour ride. The front would lose about half that much. Not sure if it's a wheel issue (they're brand new) or the tires (they have about 400 miles on them) or what. Scary stuff.

Anyone know what solvent to use to remove Stan's sealer without removing paint?

-Matt

Last edited by MattTheHat; 10-05-18 at 12:06 PM.
MattTheHat is offline  
Old 10-05-18, 11:19 AM
  #2  
TrojanHorse
SuperGimp
 
TrojanHorse's Avatar
 
Join Date: Mar 2010
Location: Whittier, CA
Posts: 13,145

Bikes: Specialized Roubaix

Mentioned: 135 Post(s)
Tagged: 0 Thread(s)
Quoted: 1012 Post(s)
Liked 23 Times in 18 Posts
It's just latex and alcohol I think, you can probably just wipe it off. I got some on my sunglasses when my wife's tire was spitting at me and it wiped right off.
TrojanHorse is offline  
Old 10-05-18, 11:26 AM
  #3  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 3,630

Bikes: Schwinn Varsity

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1266 Post(s)
Liked 48 Times in 33 Posts
Were do you find info that the Specialized Roubaix Pro is a tubeless tire?
It is not.
trailangel is online now  
Old 10-05-18, 11:39 AM
  #4  
livedarklions
Je suis Snap Motomag
 
Join Date: Jun 2018
Location: New England
Posts: 3,834

Bikes: Trek FX 3; 1994 Specialized Allez Pro; "Motobecane" Fantom CX

Mentioned: 26 Post(s)
Tagged: 0 Thread(s)
Quoted: 1927 Post(s)
Liked 444 Times in 264 Posts
Originally Posted by trailangel View Post
Were do you find info that the Specialized Roubaix Pro is a tubeless tire?
It is not.

Apparently some of them are:

https://rideonmagazine.com.au/review-specialized-roubaix-pro-2bliss-tyre/

https://www.eriksbikeshop.com/specialized-roubaix-pro-tire-700x30/pr3e6249/product
livedarklions is offline  
Old 10-05-18, 11:48 AM
  #5  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 3,630

Bikes: Schwinn Varsity

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1266 Post(s)
Liked 48 Times in 33 Posts
Ok
trailangel is online now  
Old 10-05-18, 11:49 AM
  #6  
motrheadsroadie
Senior Member
 
motrheadsroadie's Avatar
 
Join Date: Jul 2010
Location: SOUTHERN CALIFORNIA
Posts: 867

Bikes: stinner cx, paramount track

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 262 Post(s)
Likes: 0
Liked 5 Times in 3 Posts
you can clearly see the 2BLISS logo on the tire next to the chainstay.
ive only had tubeless tires blow off tubeless rims when the pressures were insanely high.

i would say try again, but with a real tubeless rimstrip instead of those veloplugs. and maybe lose 20-30psi.
motrheadsroadie is offline  
Old 10-05-18, 11:50 AM
  #7  
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 22,423
Mentioned: 166 Post(s)
Tagged: 0 Thread(s)
Quoted: 8523 Post(s)
Liked 82 Times in 74 Posts
Originally Posted by trailangel View Post
Were do you find info that the Specialized Roubaix Pro is a tubeless tire?
It is not.
Specialized is marketing a "Roubaix Pro 2Bliss Ready" tire (assuming that is the one the OP has). Need to verify.

I'm still rather new to the tubeless. Only have the front on the bike at the moment (Schwalbe Pro One, Ultegra WH-6800). Maybe 400 miles or so. Not a problem. I tend to let my tire pressures float a bit, but I haven't re-inflated since putting it on a few weeks ago.

I did have to wipe the rim & bead down with pure water to seat the bead, but after that, it seemed to hold pressure for a while before I put the sealant in.

Last edited by CliffordK; 10-05-18 at 11:54 AM.
CliffordK is offline  
Old 10-05-18, 12:07 PM
  #8  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by trailangel View Post
Were do you find info that the Specialized Roubaix Pro is a tubeless tire?
It is not.
I guess I assumed such from the title on Specialized's web site "Roubaix Pro 2Bliss Ready". Maybe 2Bliss Ready doesn't mean what I think it means!

-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 12:11 PM
  #9  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by motrheadsroadie View Post
you can clearly see the 2BLISS logo on the tire next to the chainstay.
ive only had tubeless tires blow off tubeless rims when the pressures were insanely high.

i would say try again, but with a real tubeless rimstrip instead of those veloplugs. and maybe lose 20-30psi.
The tire's max inflation rating is 115 PSI. I'm guessing the tire was at around 90. If I rode with the rear tire at 20-30 psi the rim would act like a pizza cutter and I'd be left with a three piece tire.


-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 12:11 PM
  #10  
CliffordK
Senior Member
 
CliffordK's Avatar
 
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 22,423
Mentioned: 166 Post(s)
Tagged: 0 Thread(s)
Quoted: 8523 Post(s)
Liked 82 Times in 74 Posts
I would hope the Specialized 2Bliss tires would be suitable for the Specialized Tubeless rims. There are apparently a couple of different standards.

I assume you've mounted and removed the tires a couple of times (with tubes?)

However, how about some notes about the mounting of the tire tubeless.
  • Tire size?
  • Pressure?
  • What did you do to seat the bead? Lots of popping during seating?
  • Tools used for mounting/removing tire?
  • Other details?
  • Can you see any damage to the tire?

As mentioned, I'm still a tubeless newbie, but my Schwalbe Pro One has a very snug fit on the rim. The tire has only been mounted once.

I am having troubles imagining how a blowoff like the one above could occur, without taking half the tire with it.

With my first inflation attempt, my bead didn't seat fully. It looked good from the outside, but as soon as I let the pressure out, it started leaking again. It wasn't until I wiped the rim and bead down with water than it actually seated properly. About a dozen little pops as I brought it up to pressure. And, that tire isn't going anywhere. I fear for the day I'll have to pull the tire while on the road.

Anyway, my concern about the OP's tire is that it may not have ever properly seated. At which point, if something happened while the bike was parked that allowed the tire to move on the rim, it just blew off.

Repeated mounting and removing the tire could also stress it.... possibly.
CliffordK is offline  
Old 10-05-18, 12:13 PM
  #11  
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 18,231
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 34 Times in 31 Posts
I think with a couple of layers of stan's tape it would not have blown off. I fully understand why you wouldn't want to try that though.

I have been running 38mm tires tubeless, but I'm a little reluctant to try anything smaller than that because I have heard of problems like the OP had. But at this point, I don't feel compelled to try it either. But the 38mm have been great that way.
unterhausen is offline  
Old 10-05-18, 12:22 PM
  #12  
jimincalif
Senior Member
 
Join Date: Apr 2014
Location: Lake Forest, CA
Posts: 2,034

Bikes: '96 Trek 850, '08 Specialized Roubaix Comp, '18 Niner RLT RDO

Mentioned: 52 Post(s)
Tagged: 0 Thread(s)
Quoted: 492 Post(s)
Likes: 0
Liked 31 Times in 14 Posts
Jan Heine is on record suggesting max tubeless pressure of 60 psi. I don't know exactly what to make of this as there are lots of people running road tubeless at higher pressures with no issues. I have tubeless 38mm G-One All Arounds on my gravel bike, and I want to get a set of carbon road wheels and road tubeless tires for it, but stories like this scare me off. At my weight of 204#, I'm guessing I'll need to run 80-90 psi in the back with 28-32mm tires.

https://janheine.wordpress.com/2017/...road-tubeless/
jimincalif is offline  
Old 10-05-18, 12:24 PM
  #13  
wsteve464
Senior Member
 
Join Date: Jul 2016
Posts: 269
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 71 Post(s)
Likes: 0
Liked 4 Times in 3 Posts
Tubless works great if done right. It is hard to be sure from the pic but it looks like your sealant has dried out. It should look like skim milk inside the tire. It needs to be checked every 4 weeks or so to make sure it is still liquid if not just add more. Loose the Stans sealant and go with Truckers Cream.

No idea why it blew off the rim tubeless tire or not there is something wrong with the fit of the tire, did you ride the bike with the tire flat?
wsteve464 is offline  
Old 10-05-18, 12:34 PM
  #14  
indyfabz
Senior Member
 
Join Date: Jan 2010
Posts: 22,416
Mentioned: 163 Post(s)
Tagged: 1 Thread(s)
Quoted: 8617 Post(s)
Liked 357 Times in 229 Posts
The sealant cleans off with water.

I have been riding tubeless for some five years. Never had anything like that happen. I have them mounted (for free) by the shop that built my frame and built it up. I have total confidence the sop and its work.

And word about Orange Seal. I would remove any from the frame ASAP. I got a puncture during a long ride and did even realize it until the day after the ride when I noticed orange tinting on parts of my frame. There is a few light permanent stains from it. My frame is coated with Cerakote ceramic glaze, not paint. Don't know if that played a role in the staining.
indyfabz is online now  
Old 10-05-18, 12:42 PM
  #15  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by CliffordK View Post
I would hope the Specialized 2Bliss tires would be suitable for the Specialized Tubeless rims. There are apparently a couple of different standards.

I assume you've mounted and removed the tires a couple of times (with tubes?)

However, how about some notes about the mounting of the tire tubeless.
  • Tire size?
  • Pressure?
  • What did you do to seat the bead? Lots of popping during seating?
  • Tools used for mounting/removing tire?
  • Other details?
  • Can you see any damage to the tire?

As mentioned, I'm still a tubeless newbie, but my Schwalbe Pro One has a very snug fit on the rim. The tire has only been mounted once.

I am having troubles imagining how a blowoff like the one above could occur, without taking half the tire with it.

With my first inflation attempt, my bead didn't seat fully. It looked good from the outside, but as soon as I let the pressure out, it started leaking again. It wasn't until I wiped the rim and bead down with water than it actually seated properly. About a dozen little pops as I brought it up to pressure. And, that tire isn't going anywhere. I fear for the day I'll have to pull the tire while on the road.

Anyway, my concern about the OP's tire is that it may not have ever properly seated. At which point, if something happened while the bike was parked that allowed the tire to move on the rim, it just blew off.

Repeated mounting and removing the tire could also stress it.... possibly.
The tire is 32mm. I've only been riding for a few months but during that time I've been on a guest to find tires I like on several different bikes. So lots of practice changing tires. I have tire levers but don't use them. I pull the tire off the rim by hand and install them the same way. I seat the bead using a pancake compressor after spraying both sides of the bead lightly with soapy water in a spray bottle. I fill the tire to about one third the pressure I'm going to run it at and then add pressure slowly while the bead seats. I then check the bead on each side visually all the way around both sides of the bead and then spin the wheel/tire and look for lumps. Using soapy water really eliminates uneven bead seating and lumps. The tires seated beautifully with no problems whatsoever.

Tires were ridden for about 160 miles this week. Front at 80 PSI, rear at 100 PSI. Which is probably too much air. But I hate running with too little air. I contacted Roval before purchasing the wheels and asked about if there was a maximum inflation spec. Their response was that I could use the rating on the tire.

I have not closely inspected the tires yet. I will try to do so tonight.

I can't imagine what could have possibly happened that would allow the tire to do that after having ridden for 160 miles or more. I'm glad it didn't, but it seems very, very odd.

-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 12:48 PM
  #16  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by unterhausen View Post
I think with a couple of layers of stan's tape it would not have blown off. I fully understand why you wouldn't want to try that though.

I have been running 38mm tires tubeless, but I'm a little reluctant to try anything smaller than that because I have heard of problems like the OP had. But at this point, I don't feel compelled to try it either. But the 38mm have been great that way.
I don't see how rim tape would have prevented this. If the spoke plugs leaked, I guess yeah, the tire could come off, but there was spray all over the garage floor. Pretty obvious that it came off at fairly high pressure. I have some Stan's tape, but I've got a bad case of the heebie jeebies now. Not sure I want to give it another go. I honestly don't see a lot of advantage over tubes. Especially having them leak down 10 psi during a ride.


-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 12:52 PM
  #17  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by jimincalif View Post
Jan Heine is on record suggesting max tubeless pressure of 60 psi. I don't know exactly what to make of this as there are lots of people running road tubeless at higher pressures with no issues. I have tubeless 38mm G-One All Arounds on my gravel bike, and I want to get a set of carbon road wheels and road tubeless tires for it, but stories like this scare me off. At my weight of 204#, I'm guessing I'll need to run 80-90 psi in the back with 28-32mm tires.

https://janheine.wordpress.com/2017/...road-tubeless/
Interesting. I weigh 230. LOTS of pressure on every part of that tire when I'm humping it down a hill at a fairly high rate of speed. Even more so when cornering at speed.

Maybe when the tires were put on the original rims the bead could have been damaged. I honestly don't think that's likely, but it's possible. Short of finding some damage on the tires I don't think I'm going to try running tubeless again. Tubes just aren't enough trouble to risk a blow out while riding.

-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 12:55 PM
  #18  
trailangel
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 3,630

Bikes: Schwinn Varsity

Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1266 Post(s)
Liked 48 Times in 33 Posts
I see that they do indeed make a tubeless tire, but maybe you just put too much air into the rear.
  • Casing: 120 TPI
  • Bead: Foldable
  • Butyl wrapped bead = 2Bliss Ready
  • Compound: GRIPTON
  • Flat Protection: Endurant Casing and BlackBelt
  • 700 x 30mm/32mm, PSI 45-90, approximate weight 375g
trailangel is online now  
Old 10-05-18, 12:58 PM
  #19  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by wsteve464 View Post
Tubless works great if done right. It is hard to be sure from the pic but it looks like your sealant has dried out. It should look like skim milk inside the tire. It needs to be checked every 4 weeks or so to make sure it is still liquid if not just add more. Loose the Stans sealant and go with Truckers Cream.

No idea why it blew off the rim tubeless tire or not there is something wrong with the fit of the tire, did you ride the bike with the tire flat?
Sealant was put in 5-6 days ago. It looks dried out because most of it blew all over the garage. What was left in the tire was still liquid.

As I mentioned, the tire installed and seated perfectly. I will check for damage on the bead or elsewhere tonight. I guess it's possible there was some damage elsewhere on the tire and it could have blown there overnight, but I didn't notice anything while cleaning the sealant out of the tire (but I wasn't looking either). I did not ride the tire flat. It was off the rim like that when I came out to ride first thing in the morning.

The only explanation I can think of is damage elsewhere on the tire that expanded and popped over night. Come to think of it, I ran over some kind of ceramic sounding object about three miles from home last night. I circled around to see what it was but couldn't find it. I'll closely examine the tire tonight.

-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 01:18 PM
  #20  
cyclintom
Senior Member
 
Join Date: Aug 2005
Location: San Leandro
Posts: 2,893

Bikes: Eddy Merckx Corsa Extra, Basso Loto, Pinarello Stelvio, Redline Cyclocross

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 319 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by unterhausen View Post
I think with a couple of layers of stan's tape it would not have blown off. I fully understand why you wouldn't want to try that though.

I have been running 38mm tires tubeless, but I'm a little reluctant to try anything smaller than that because I have heard of problems like the OP had. But at this point, I don't feel compelled to try it either. But the 38mm have been great that way.
This had nothing to do with the tape. If you look at the way that the Stan's is puddled it looks like he just put his setup together and hadn't even ridden it once which you need to seal all of the leaks. I'm fairly certain what when the tire was leaking pressure down he pumped it up to 120 psi which on a 32 mm tire would blow it all the way to the moon. Normally you run tubeless at LEAST 10 psi less than you would a tube tire. And I often don't re-adjust the tire pressure for several weeks and the pressure only falls 20 psi below my normal pressure.

I'm really not familiar with Stan's and use only Orange which works a LOT better than several other brands I've tried - one even had something that looked like glitter in it and didn't seal anything.

California has exceptionally horrible roads and the lower pressure possible with tubeless greatly improves the ride. Moreover, the worse the road conditions the lower the rolling resistance will be with tubeless. This is why half of all the new racing tires are now tubeless. On one of these groups I had people arguing the Pro's use only tubular tires etc. A Pro mechanic emailed me directly saying that most of the TT bikes use tubeless because of the reduced rolling resistance. He also said that there was a reason that they use tubular. He said that the "fans" break glass on the roads to slow people behind their favorites. The team cars are forever replacing wheels because of this. Well the roof of a team car has limited space. So using tubulars a team mechanic can sit in the back seat and pull the flatted tubular off and the new tubular on and fill it with a CO2 cartridge. That's why you can see team mechanics leaning out the windows and placing the repaired wheels into the wheel racks.

I only have tubeless on one of my bikes but they perform so well that I'm changing everything over. But like anything else you have to install them correctly or you'll have problems.

Last edited by cyclintom; 10-05-18 at 01:21 PM.
cyclintom is offline  
Old 10-05-18, 01:25 PM
  #21  
cyclintom
Senior Member
 
Join Date: Aug 2005
Location: San Leandro
Posts: 2,893

Bikes: Eddy Merckx Corsa Extra, Basso Loto, Pinarello Stelvio, Redline Cyclocross

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 319 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by MattTheHat View Post
Sealant was put in 5-6 days ago. It looks dried out because most of it blew all over the garage. What was left in the tire was still liquid.

As I mentioned, the tire installed and seated perfectly. I will check for damage on the bead or elsewhere tonight. I guess it's possible there was some damage elsewhere on the tire and it could have blown there overnight, but I didn't notice anything while cleaning the sealant out of the tire (but I wasn't looking either). I did not ride the tire flat. It was off the rim like that when I came out to ride first thing in the morning.

The only explanation I can think of is damage elsewhere on the tire that expanded and popped over night. Come to think of it, I ran over some kind of ceramic sounding object about three miles from home last night. I circled around to see what it was but couldn't find it. I'll closely examine the tire tonight.

-Matt
Matt - the tire doesn't look like you rode it after installation. Why would the sealant be only puddled on the bottom and no residue anywhere else in the visible part of the tire? Also a puncture of any kind would at worst cause the pressure to go down and not to blow off the rim. That sort of thing is from way over-pressure.
cyclintom is offline  
Old 10-05-18, 01:50 PM
  #22  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by cyclintom View Post
Matt - the tire doesn't look like you rode it after installation. Why would the sealant be only puddled on the bottom and no residue anywhere else in the visible part of the tire? Also a puncture of any kind would at worst cause the pressure to go down and not to blow off the rim. That sort of thing is from way over-pressure.
I installed the tire last Saturday and rode it approximately 160 miles since then. The tires had about 400 miles on them with tubes in them. They were definitely ridden after installation.

I assume the residue was puddle only in the bottom because a) most of it was blown around the rest of the garage and b) because the sealant was liquid and ran down into the bottom of the tire. I don't have much experience with sealant. The Stan's stuff is *very* fluid. When it's wet, it just wipes up and is not even really sticky. So yes, it runs right down the inside of the tire.

Immediately before leaving for my night ride last night around 9:00 PM, the pressure was set at 101.5 PSI as checked on my Chinesium digital air pressure chuck. It was also double checked with a digital air pressure gauge immediately after (because I don't totally trust the Chinesium air chuck), which read 100 PSI. When I returned home shortly after 11 PM, I checked the tire pressure with the digital air pressure gauge. I don't remember the exact reading, but it was somewhere around 90 PSI.

Now, 90 PSI may well be "way over-pressure", though the tire itself clearly indicates 115 PSI max pressure. If 100 PSI was too much pressure, I'd sure think the tire would blow whilst riding and heating up a little with plenty of stress on it. Blowing over night at 90 PSI seems really unusual.

When I mention tire damage, I'm not talking about a puncture. I'd agree that a puncture would result in a slow leak. I'm thinking that there may be some dame in the sidewall that cut into the belting material but not through the rubber. At 90 PSI, the damaged belting could have stretched and torn. I would think such a scenario would look something like the picture I posted.


-Matt
__________________
MattTheHat is offline  
Old 10-05-18, 01:53 PM
  #23  
motrheadsroadie
Senior Member
 
motrheadsroadie's Avatar
 
Join Date: Jul 2010
Location: SOUTHERN CALIFORNIA
Posts: 867

Bikes: stinner cx, paramount track

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 262 Post(s)
Likes: 0
Liked 5 Times in 3 Posts
my velocity a23s require two layers of basetape per rim in order for the tubeless to work properly.
basetape builds up on the bottom of the rim making the fit between the bead of the tire and the rim a lil more snug than without.
veloplugs are some roadie weightweenie garbage. they are not intended for what youre doing.
if stans tape makes you a coward, go to your local specialized dealer and get a pack of their 2BLISS rimstrips.
motrheadsroadie is offline  
Old 10-05-18, 01:55 PM
  #24  
motrheadsroadie
Senior Member
 
motrheadsroadie's Avatar
 
Join Date: Jul 2010
Location: SOUTHERN CALIFORNIA
Posts: 867

Bikes: stinner cx, paramount track

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 262 Post(s)
Likes: 0
Liked 5 Times in 3 Posts
stans ironcross rims have an absurdly low psi (like 40psi max?) that they recommend not going over because the bead is so shallow that it cant hold a tire at high pressure. it has nothing to do with what tire you use.
motrheadsroadie is offline  
Old 10-05-18, 01:57 PM
  #25  
MattTheHat 
Senior Member
Thread Starter
 
MattTheHat's Avatar
 
Join Date: Aug 2018
Location: Allen, TX
Posts: 546

Bikes: '19 Canyon Endurace, '18 Specialized Diverge Comp, '19 Trek X-Caliber 7

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 167 Post(s)
Liked 53 Times in 41 Posts
Originally Posted by cyclintom View Post
This had nothing to do with the tape. If you look at the way that the Stan's is puddled it looks like he just put his setup together and hadn't even ridden it once which you need to seal all of the leaks. I'm fairly certain what when the tire was leaking pressure down he pumped it up to 120 psi which on a 32 mm tire would blow it all the way to the moon. Normally you run tubeless at LEAST 10 psi less than you would a tube tire. And I often don't re-adjust the tire pressure for several weeks and the pressure only falls 20 psi below my normal pressure.

I'm really not familiar with Stan's and use only Orange which works a LOT better than several other brands I've tried - one even had something that looked like glitter in it and didn't seal anything.

California has exceptionally horrible roads and the lower pressure possible with tubeless greatly improves the ride. Moreover, the worse the road conditions the lower the rolling resistance will be with tubeless. This is why half of all the new racing tires are now tubeless. On one of these groups I had people arguing the Pro's use only tubular tires etc. A Pro mechanic emailed me directly saying that most of the TT bikes use tubeless because of the reduced rolling resistance. He also said that there was a reason that they use tubular. He said that the "fans" break glass on the roads to slow people behind their favorites. The team cars are forever replacing wheels because of this. Well the roof of a team car has limited space. So using tubulars a team mechanic can sit in the back seat and pull the flatted tubular off and the new tubular on and fill it with a CO2 cartridge. That's why you can see team mechanics leaning out the windows and placing the repaired wheels into the wheel racks.

I only have tubeless on one of my bikes but they perform so well that I'm changing everything over. But like anything else you have to install them correctly or you'll have problems.
You may be fairly certain, but you'd be wrong. The pressure was checked with two different digital gauges which both ready within 1.5 PSI of each other.

The tire is rated at 115 PSI. I don't think 120 PSI would blow it to the moon. (That would take at least 123 PSI.)

Yes, I'm sure a tubeless tire needs to be installed correctly to work properly. You are 100% correct. The same is true for a regular clincher. I'm also pretty sure I installed them correctly, it's really not rocket science.

I'm glad tubeless is working for you, and apparently many others as well.

-Matt
__________________

Last edited by MattTheHat; 10-05-18 at 02:01 PM.
MattTheHat is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.