Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-13-10, 03:14 PM   #1
undisputed83
Senior Member
Thread Starter
 
undisputed83's Avatar
 
Join Date: Aug 2009
Location: Westbrook, Maine
Bikes: 2011 Litespeed M-1, 1991 Raleigh Technium (Commuter)
Posts: 553
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Tire deflating... but no apparent hole in tube?

Is my wheel messed up? I hope to hell not...
undisputed83 is offline   Reply With Quote
Old 07-13-10, 03:17 PM   #2
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 30,108
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 395 Post(s)
Remove the tube from the wheel.
Pump it up and put in under water in the sink.
Wiggle the valve side to side.
You will get small bubbles somewhere.
__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 07-13-10, 03:20 PM   #3
prathmann
Senior Member
 
Join Date: Nov 2008
Location: Bay Area, Calif.
Bikes:
Posts: 6,226
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 150 Post(s)
No, if the air is getting out then there's a problem with the tube. The hole might be very small - have you tried inflating it until the tube gets really big and then holding it under water in a sink or tub to look for bubbles coming out? In rare cases you can also have a problem with dust getting into the valve and causing a small leak. If the piece of dust gets moved the valve will work properly again.

In any event, check inside the tire and the rim for any problems and if everything seems proper and smooth then put in a new tube and inflate.
prathmann is offline   Reply With Quote
Old 07-13-10, 03:21 PM   #4
undisputed83
Senior Member
Thread Starter
 
undisputed83's Avatar
 
Join Date: Aug 2009
Location: Westbrook, Maine
Bikes: 2011 Litespeed M-1, 1991 Raleigh Technium (Commuter)
Posts: 553
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
this is so frustrating... I just bought these tires and tubes... and the tire is such a tight fit. it's a pain to deal with...
undisputed83 is offline   Reply With Quote
Old 07-13-10, 03:27 PM   #5
10 Wheels
Galveston County Texas
 
10 Wheels's Avatar
 
Join Date: Nov 2007
Location: In The Wind
Bikes: 2010 Expedition, 03 GTO
Posts: 30,108
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 395 Post(s)
Better to do it in the comfort of your home.
Yesterday Dave had a slow leak flat that went down on the highway.
No place to pull over. Heat Index 105*

__________________
[SIZE=1][B]What I like about Texas[/B]
http://www.youtube.com/watch?v=PGukLuXzH1E

Set F1re To The Ra1n ( NY Night Rain Ride)
http://www.youtube.com/watch?v=W7jfcWEkSrI
10 Wheels is offline   Reply With Quote
Old 07-13-10, 03:31 PM   #6
nancyj
Senior Member
 
nancyj's Avatar
 
Join Date: Jun 2010
Bikes:
Posts: 278
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
schraeder or presTA? - sometimes the valve stem simply gets loose on schraeder and you can tighten it with one of these



http://www.motosport.com/dirtbike/pr...segment=badger
nancyj is offline   Reply With Quote
Old 07-13-10, 03:31 PM   #7
cyccommute 
Mad bike riding scientist
 
cyccommute's Avatar
 
Join Date: Nov 2004
Location: Denver, CO
Bikes: Some silver ones, a black one, a red one, an orange one and a couple of titanium ones
Posts: 18,296
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 410 Post(s)
Quote:
Originally Posted by undisputed83 View Post
Is my wheel messed up? I hope to hell not...
Deflate over what time frame and by how much? Overnight? A couple of hours? A couple of weeks? Each has its own causes and remedies.

If it's deflating overnight to a really flat tire, you likely have small hole and should fix it. If it's a couple of hours, you have a large hole and should fix it. If it's only dropping a few psi overnight (or over a couple of weeks) that's almost normal. Tires will loose pressure over time and you really can't stop them from doing that.

If you are using CO2, you'll see a huge drop in pressure overnight. That is very normal. CO2 should only be used for emergencies and replaced with air before your next ride.
__________________
Stuart Black
New! Pokin' around the Poconos A cold ride around Lake Erie
New! Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Days of Wineless Roads. Bed and Breakfasting along the KATY
Twisting Down the Alley. Misadventures in tornado alley.
An Good Ol' Fashion Appalachian Butt Whoopin'.
cyccommute is offline   Reply With Quote
Old 07-13-10, 03:45 PM   #8
EM42
smallwheelsonly
 
Join Date: Jan 2009
Location: Ca.
Bikes: SmallWheelOnly
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
this might shed some light how Schwalbe make their tires and tubes
the labor and manpower required to make each tube. This is a German company=quality
I doubt most tube manufacturers go to the troubles into the design, engineering, material quality, QC

new tube failure normally= QC failure

here look at the laborious process for tubes video start at 07:45
but watch the whole video its quite interesting

http://www.youtube.com/watch?v=M9RzJAWvOMQ


Last edited by EM42; 07-13-10 at 03:51 PM.
EM42 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 05:21 AM.