Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

loss in tire pressure

Search
Notices
Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

loss in tire pressure

Thread Tools
 
Search this Thread
 
Old 03-05-09, 08:58 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Sep 2008
Location: ottawa
Posts: 68

Bikes: 04 kona dawg matic, 08 kona paddy wagon

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
loss in tire pressure

is it normal to have a loss in tire pressure overnight? my tire went from 130 psi to 116 psi overnight, is this normal? or do i have a small leak?
subopolois is offline  
Old 03-05-09, 09:09 AM
  #2  
Live without dead time
 
Join Date: Jun 2008
Location: Toronto
Posts: 2,136
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
That seems like a lot of pressure to lose overnight, I'd that your valve is closed properly and look for leaks
elTwitcho is offline  
Old 03-05-09, 11:56 AM
  #3  
Senior Member
 
Join Date: Jun 2002
Location: San Jose, CA
Posts: 3,676

Bikes: Too many bikes, too little time to ride

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 425 Post(s)
Liked 454 Times in 313 Posts
my guess is about normal. i go from 110 to about 80 over the course of a week. of course, i don't check it every day so i can't say how much pressure is lost over just one night.
tFUnK is offline  
Old 03-05-09, 04:04 PM
  #4  
*
 
adriano's Avatar
 
Join Date: Nov 2008
Location: Baltimore
Posts: 6,876

Bikes: https://velospace.org/node/18951

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time in 1 Post
are those readings at the same temperature?
adriano is offline  
Old 03-05-09, 04:36 PM
  #5  
chickenosaurus
 
j3ffr3y's Avatar
 
Join Date: Sep 2008
Location: Boston, MA
Posts: 1,189

Bikes: 2010 Motobecane Team Track, 1997 GT Edge, 2012 Kilo TT Stripper

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
when you first put air in temp goes up, so as pressure. As they cool to room temperature, which takes a minute or two, pressure will be lower. Also, over the course of a week or so, mine generally lose about 20/30 psi
j3ffr3y is offline  
Old 03-05-09, 05:22 PM
  #6  
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,353

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Likes: 0
Liked 25 Times in 18 Posts
Originally Posted by subopolois
is it normal to have a loss in tire pressure overnight? my tire went from 130 psi to 116 psi overnight, is this normal? or do i have a small leak?
Depends on the tube. Normal butyl tubes shouldn't lose that much pressure overnight. Me thinks there's some give from the method you're using to take tire pressure.
operator is offline  
Old 03-05-09, 05:28 PM
  #7  
Ths Hipstr Kills Masheenz
 
cc700's Avatar
 
Join Date: Oct 2006
Location: seattle
Posts: 8,542

Bikes: tirove

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times in 3 Posts
130 psi is a lot of pressure to hold. higher pressures will lose more quicker compared to lower pressures, so i don't really think that's all that much. 14 psi is nothing over 8-12 hours considering the pressure.

however, checking valves and checking for leaks are never bad things to do in your down time.
cc700 is offline  
Old 03-05-09, 05:32 PM
  #8  
cab horn
 
Join Date: Jun 2004
Location: Toronto
Posts: 28,353

Bikes: 1987 Bianchi Campione

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 42 Post(s)
Likes: 0
Liked 25 Times in 18 Posts
Originally Posted by cc700
130 psi is a lot of pressure to hold. higher pressures will lose more quicker compared to lower pressures, so i don't really think that's all that much. 14 psi is nothing over 8-12 hours considering the pressure.

however, checking valves and checking for leaks are never bad things to do in your down time.
Nah. I have tyres up to 120 psi, after 3 months they've only went down to 70psi. These are the generic cheapest butyl tubes you can buy.
operator is offline  
Old 03-05-09, 06:47 PM
  #9  
Senior Member
 
Join Date: Sep 2008
Posts: 309
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
PV=nRT my friend.
bmw5nkj is offline  
Old 03-05-09, 07:42 PM
  #10  
Old fart
 
JohnDThompson's Avatar
 
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,779

Bikes: Several, mostly not name brands.

Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3583 Post(s)
Liked 3,395 Times in 1,929 Posts
Originally Posted by subopolois
is it normal to have a loss in tire pressure overnight? my tire went from 130 psi to 116 psi overnight, is this normal? or do i have a small leak?
Latex tubes will do this.
JohnDThompson is offline  

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



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

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.