Go Back  Bike Forums > Bike Forums > Commuting
Reload this Page >

Random blow out 7 hours after riding.

Commuting Bicycle commuting is easier than you think, before you know it, you'll be hooked. Learn the tips, hints, equipment, safety requirements for safely riding your bike to work.

Random blow out 7 hours after riding.

Reply

Old 07-29-08, 01:46 PM
  #1  
illadelphia esq
Member
Thread Starter
 
Join Date: Jul 2008
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Random blow out 7 hours after riding.

So I am sitting here at work and hear the dreaded pop and hissing sound but I haven't ridden since 8:30 this morning. The only possible thing I could think of is that I tuck my bike behind the door to my office and the door may have wedged against the bottom of the wheel leading to pressure then the blow out. But again I didn't touch the door at the time of the blow out and had been sitting at my desk for awhile.

It has me perplexed and annoyed I have to walk to the train. Anyone experience a similar issue or have a more logical explanation of what could have happen?
illadelphia esq is offline  
Reply With Quote
Old 07-29-08, 01:50 PM
  #2  
corripio
Senior Member
 
Join Date: Jul 2008
Location: Ann Arbor
Posts: 131

Bikes: Felt 45, Swobo Otis

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Could be something sharp on the inside of the rim. I've had that happen to me before at work with an older bike (thought it was the hissing of the heating system at first). I cleaned out debris and put some new tape on some parts of the rim where the stripping had started to come off. This when I started not just carrying tubes with me when I bike, but also keeping some tubes/patches in my desk.
corripio is offline  
Reply With Quote
Old 07-29-08, 01:56 PM
  #3  
illadelphia esq
Member
Thread Starter
 
Join Date: Jul 2008
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The tire deflated so suddenly and quickly that I don't think it was debris. And of course I came unprepared today, I have a new saddle which I could not fit the mount for my old bag on, and I was rushing this morning--barely even made the train.

I guess this is more of a vent / have you had this happen.
illadelphia esq is offline  
Reply With Quote
Old 07-29-08, 01:59 PM
  #4  
77midget
me ride bike good
 
Join Date: Jun 2008
Location: outside Boston, MA
Posts: 462

Bikes: Trek 4300

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Has the tube ever been patched before? I had this happen only a couple weeks ago when a patch previously applied failed. It was sudden and complete failure.
77midget is offline  
Reply With Quote
Old 07-29-08, 02:29 PM
  #5  
illadelphia esq
Member
Thread Starter
 
Join Date: Jul 2008
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Originally Posted by 77midget View Post
Has the tube ever been patched before? I had this happen only a couple weeks ago when a patch previously applied failed. It was sudden and complete failure.
It definitely has at least one patch and that would make a lot of sense. I have never experienced something like that before.
illadelphia esq is offline  
Reply With Quote
Old 07-29-08, 02:55 PM
  #6  
tjspiel
Senior Member
 
tjspiel's Avatar
 
Join Date: Jun 2007
Location: Minneapolis
Posts: 8,112
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 50 Post(s)
Originally Posted by illadelphia esq View Post
It definitely has at least one patch and that would make a lot of sense. I have never experienced something like that before.
I had this happen before. High Pressure + Old Rim Tape. The tape gave out over a spoke nipple hole causing the tube to expand into it and tear itself on the edge.
tjspiel is offline  
Reply With Quote
Old 07-29-08, 03:16 PM
  #7  
UprightJoe
Senior Member
 
Join Date: Jun 2008
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I recently went through all of my bikes and trued the wheels. While I was at it, I took the opportunity to test out my new frame pump and make sure it could really get up to 100 PSI as advertised. It got there but I really had to pump hard and exert myself past about 60-70PSI. In the process, I must have really been yanking the valve stem around.

About 2-3 hours after I finished I hear a crack like a gunshot followed by a long hiss. When I took the tube out, I found that the valve stem had torn near where it makes contact with the rim. I'm not sure why it took several hours to fail but it did. Nothing touched the bike. It was leaning up against a shelf in my basement and I was sitting about 10 feet away from it.
UprightJoe is offline  
Reply With Quote
Old 07-29-08, 04:17 PM
  #8  
lil brown bat
Senior Member
 
lil brown bat's Avatar
 
Join Date: May 2007
Location: Boston (sort of)
Posts: 3,878

Bikes: 1 road, 1 Urban Assault Vehicle

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Originally Posted by tjspiel View Post
I had this happen before. High Pressure + Old Rim Tape. The tape gave out over a spoke nipple hole causing the tube to expand into it and tear itself on the edge.
This is what I thought, and +1 if the blowout happened after it had warmed up (hot air expands). Doesn't have to have anything to do with a patch, though -- a perfectly intact tube will blow this way if it's high pressure.
lil brown bat is offline  
Reply With Quote
Old 07-29-08, 04:37 PM
  #9  
Longfemur
Senior Member
 
Join Date: Aug 2005
Posts: 1,936
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Anybody can make any speed if they pedal harder. It's a meaningless measure in this context.
Longfemur is offline  
Reply With Quote
Old 07-29-08, 06:53 PM
  #10  
bmclaughlin807
Crankenstein
 
bmclaughlin807's Avatar
 
Join Date: May 2006
Location: Spokane
Posts: 4,038

Bikes: Novara Randonee (TankerBelle)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I've had the rim tape fail once allowing a blow out through a spoke hole, and a tire sidewall fail once allowing it to blow out through the sidewall... both times the bike was sitting with nobody/nothing near it... the component just chose that moment to give way.
__________________
"There is no greater wonder than the way the face and character of a woman fit so perfectly in a man's mind, and stay there, and he could never tell you why. It just seems it was the thing he most wanted." Robert Louis Stevenson
bmclaughlin807 is offline  
Reply With Quote
Old 07-29-08, 07:29 PM
  #11  
gz_
FREE DEATHHARE
 
gz_'s Avatar
 
Join Date: Jul 2007
Location: princeton, nj
Posts: 302
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Something similar happened to me recently and after checkout out the tire, I saw the sidewalls were pretty worn and in one area there was even a hole. So I'd check the tire as well as the rim.
__________________
transam '07
gz_ is offline  
Reply With Quote
Old 07-29-08, 07:41 PM
  #12  
ECDkeys
Senior Member
 
Join Date: Jan 2007
Posts: 343
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I haven't yet experienced the rim tape failure, knock on wood.

But I have experienced the worn sidewall blowout. I stopped for groceries, and when I got back to my bike, the tire was flat. At first I thought it was a prank played by mischievous kids, letting the air out. It was a really old tire with hardly any tread wear.

I've also experienced the pinch flat several times. Very annoying. Sometimes the tube doesn't blow for hours after you pump it up. You really have to be careful when seating the tire back on the rim.
ECDkeys is offline  
Reply With Quote
Old 07-29-08, 07:51 PM
  #13  
pirate
Senior Member
 
pirate's Avatar
 
Join Date: Apr 2006
Posts: 978
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This happened to me when I pumped up a tire and the bead wasn't seated properly. My bike was in the same room as my roommates playing foosball when the tube popped- it sounded like a shotgun blast. The look on their faces were priceless, but I felt like a dumb ass.
pirate is offline  
Reply With Quote
Old 07-29-08, 08:44 PM
  #14  
illadelphia esq
Member
Thread Starter
 
Join Date: Jul 2008
Posts: 141
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Originally Posted by UprightJoe View Post
I recently went through all of my bikes and trued the wheels. While I was at it, I took the opportunity to test out my new frame pump and make sure it could really get up to 100 PSI as advertised. It got there but I really had to pump hard and exert myself past about 60-70PSI. In the process, I must have really been yanking the valve stem around.

About 2-3 hours after I finished I hear a crack like a gunshot followed by a long hiss. When I took the tube out, I found that the valve stem had torn near where it makes contact with the rim. I'm not sure why it took several hours to fail but it did. Nothing touched the bike. It was leaning up against a shelf in my basement and I was sitting about 10 feet away from it.
I think this was the closest because I had filled them up in a rush last night before heading across town and the tare was at a 90 degree angle near the valve stem. The weird thing is that it was almost 20 hours since I filled the air before the blow out. Just bizarre.
illadelphia esq is offline  
Reply With Quote
Old 07-30-08, 12:48 AM
  #15  
Fribley
Senior Member
 
Join Date: May 2008
Posts: 111
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had that happen. Bought a project bike from '79. No idea if tube was original or not but the rim tape hole wasnt centered over the rim hole and it had to wiggle the stem through and pull probably alot harder then i should have to get it through after i cleaned the rim. Pumped it up to the reccomended 90 lbs and set it aside to work on some other parts of the bike. 2 hours later i went to pick up the tire to admire how well i cleaned up the rims and BAAAMMMM. The tube blew up in my hand, it blew the tire right off the rim and sent a pretty good blast of air in my face (i got lucky it was only air). The tube had about a 2.5 to 3 inch hole right near the valve stem.
Fribley is offline  
Reply With Quote
Old 08-18-08, 08:50 PM
  #16  
HamGunner
QRZ?
 
Join Date: Jun 2008
Location: Crystal Lake, IL
Posts: 6

Bikes: Trek 400T Elance

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Had my first experience like that this morning. I rode 15 miles yesterday and when I returned home, the tire seemed fine. This morning, the tire was flat. I pulled the rear wheel and found a 7 inch gash in the tube. I checked the rim tape and did not see anything sticking through it nor any debris in there that could have caused this damage. I'm still a little baffled as to why it blew. The tube was probably only 2 months old and had low mileage on it.

HG
HamGunner is offline  
Reply With Quote
Old 08-18-08, 09:08 PM
  #17  
Popeyecahn
Pedo Grande
 
Popeyecahn's Avatar
 
Join Date: Jul 2008
Location: San Diego
Posts: 872

Bikes: Cervelo C3, Serotta Legend Ti, Vitus 979

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Not just rim tape failure, but the incorrect size. I learned the hard way after having the LBS change this and at the same time putting on Gatorskins (finally got the hang of changing them...) and tubes. I had 4 or 5 flats and all of them were rim side. The tape was poorly placed and looked too thin to properly cover all the spoke holes. I got the proper size at a different shop and so far so good.

In the 2 months of riding again I'm having to learn and re-learn lots of maintenance stuff and then do it mostly all myself if I want it done right...
Popeyecahn is offline  
Reply With Quote
Old 08-18-08, 09:30 PM
  #18  
rednek426
Jeff Foxworthy variety
 
Join Date: May 2008
Posts: 42

Bikes: Eight of them...

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
I put new tires on my mountain bike once, but kept the couple-year-old tubes I had. The new tires were rated for higher pressure than the old ones, so of course I pumped them to the higher rating. The next day I rode to work, and didn't have a problem until I went to ride home, and the rear wheel was flat, and the valve stem was missing! I found it 15 feet in front of the bike.

I've also had a few tubes with sealant flat for no reason while sitting, and air back up fine and hold air fine for about a day then completely flat again while sitting.
One reason why I no longer run tubes with sealant. If I get a flat tire, I'd like to know about it, please.
rednek426 is offline  
Reply With Quote
Old 08-18-08, 10:35 PM
  #19  
seeker333
-
 
seeker333's Avatar
 
Join Date: Feb 2004
Posts: 3,665

Bikes: yes!

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 212 Post(s)
i've had 2 "glueless" patches fail spontaneously when i wasn't riding, once when it was in repair stand and i happened to witness it.

i quit using glueless patches.
seeker333 is offline  
Reply With Quote
Old 08-18-08, 11:15 PM
  #20  
Popeyecahn
Pedo Grande
 
Popeyecahn's Avatar
 
Join Date: Jul 2008
Location: San Diego
Posts: 872

Bikes: Cervelo C3, Serotta Legend Ti, Vitus 979

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Do not pump a tube with a glueless patch to anything close to normal operating pressure. I too had one fail on me before I put the wheel back on, I made the mistake of pumping it up to 90 or so psi.

They're a 'get you home' stop gap measure, try 'em at a lower psi and they should hold. I put 60-70 in a patched tube the other day and it held fine for 10 mi. When I pulled the tube to change it, I could see the patch wasn't gonna hold too much longer.
Popeyecahn is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service