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


Go Back   > >

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!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-09-10, 01:48 PM   #1
Bicycle Guy
Member
Thread Starter
 
Bicycle Guy's Avatar
 
Join Date: Jan 2010
Location: I.T. USA
Bikes: Schwinn Willy
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Inner tube questions

Who makes some of the best inner tubes on the market, and how often do most people have to add pressure to their tires?

I seem to have to increase mine every two to three days and add between 7-10 pounds of pressure.

I typically keep 70-75 lbs pressure in the tubes.

Thanks
Ken
Bicycle Guy is offline   Reply With Quote
Old 03-09-10, 02:00 PM   #2
prathmann
Senior Member
 
Join Date: Nov 2008
Location: Bay Area, Calif.
Bikes:
Posts: 5,946
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Best for what purpose? Tubes with thicker rubber will hold air better, but they'll increase rolling resistance and weigh a little more.
prathmann is offline   Reply With Quote
Old 03-09-10, 02:07 PM   #3
rumrunn6
Senior Member
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Bikes: Bottecchia Sprint
Posts: 13,810
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I can't imagine any hold air any better than others. I know that tubes are semipermeable so all will leak air.

however there are some that are thicker for puncture resistance. they are heavier but you might look for these tubes. they may hold pressure better as well.
rumrunn6 is offline   Reply With Quote
Old 03-09-10, 02:58 PM   #4
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by rumrunn6 View Post
I can't imagine any hold air any better than others. I know that tubes are semipermeable so all will leak air.

however there are some that are thicker for puncture resistance. they are heavier but you might look for these tubes. they may hold pressure better as well.
You imagine wrong.

Butyl tubes will retain air the best, followed by polyurethan and latex. Latex you'll need to pump up almost mid-ride if you do 120km++
operator is offline   Reply With Quote
Old 03-09-10, 03:27 PM   #5
Nermal
Senior Member
 
Nermal's Avatar
 
Join Date: Jan 2006
Location: Farmington, NM
Bikes: Giant Cypress SX
Posts: 2,060
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have one bike that can go for three weeks before the tires need to be aired up, and I run about the same pressure you do. The other one needs air aboiut every three days, at the same general pressure. The "good" one is using Pyramid (sp?) thorn resistant tubes. I don't know what the other uses, as it is OEM and never been dismounted. Clearly, there is a difference, but as prathmann mentions, there is a trade off.

For a given weight, I would also like to know which holds air the best, in the absence of punctures.
__________________
Some people are like a Slinky ... not really good for anything, but you still can't help but smile when you shove them down the stairs.
Nermal is offline   Reply With Quote
Old 03-09-10, 03:51 PM   #6
Bicycle Guy
Member
Thread Starter
 
Bicycle Guy's Avatar
 
Join Date: Jan 2010
Location: I.T. USA
Bikes: Schwinn Willy
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Nermal,

Thanks for a brand name. I just didn't want to grab the first inner tube box I came to. Weight is really not much of a consideration to me.


Ken
Bicycle Guy is offline   Reply With Quote
Old 03-09-10, 09:00 PM   #7
DX-MAN
Banned
 
Join Date: Jun 2009
Bikes:
Posts: 4,789
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My tires have Specialized tubes in them, nothing special, standard $5 fare a the LBS. Top 'em off maybe once a month at 55-60psi.
DX-MAN is offline   Reply With Quote
Old 03-09-10, 09:06 PM   #8
cyclist2000
Senior Member
 
cyclist2000's Avatar
 
Join Date: Sep 2009
Location: Up
Bikes: Masi (retired), Giant TCR, Eisentraut, Jamis Aurora Elite, Zullo (trainer bike), Cannondale, 84 Stumpjumper, Waterford(N+1), Tern D8 (N+1), looking for a Ti frame
Posts: 3,023
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I buy the cheapest tubes that I can find at the semi annual bike shop sale, but I am very particular in the brand of tire that I buy. I don't think there is much difference between butyl tubes.
cyclist2000 is offline   Reply With Quote
Old 03-10-10, 08:14 PM   #9
wahoonc
Senior Member
 
wahoonc's Avatar
 
Join Date: Jan 2005
Location: On the road-USA
Bikes: Giant Excursion, Raleigh Sports, Raleigh R.S.W. Compact, Motobecane? and about 20 more! OMG
Posts: 16,687
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I use Schwalbe tubes (and tires) on the bikes I ride the most. On my Raleigh Twenty I can go over a month without having to add air, unless there is a drastic temperature swing. I usually pay ~$8 each. But they typically out last the less expensive tubes.

Aaron
__________________
Webshots is bailing out, if you find any of my posts with corrupt picture files and want to see them corrected please let me know. :(

ISO: A late 1980's Giant Iguana MTB frameset (or complete bike) 23" Red with yellow graphics.

"Cycling should be a way of life, not a hobby.
RIDE, YOU FOOL, RIDE!"
_Nicodemus

"Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred
Which one would you rather have under your butt at 30mph?"
_krazygluon
wahoonc is offline   Reply With Quote
Old 03-11-10, 02:43 PM   #10
stapfam
Time for a change.
 
stapfam's Avatar
 
Join Date: Jan 2004
Location: 6 miles inland from the coast of Sussex, in the South East of England
Bikes: Dale MT2000. Bianchi FS920 Kona Explosif. Giant TCR C. Boreas Ignis. Pinarello Fp Uno.
Posts: 19,915
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Michelin-Schwalbe-Continental- Specialised

All good known make tubes and I normally go for a good name that the shop stocks--any good name.

But My Giant OCR3 had a front wheel puncture Ok- stop and repair but I had to use the spare tube I always carry as the tube was splitting and this was the reason for the puncture. Nothing in the tyre to cause it- just a cheap no-name tube. The bike was less than a year old and I swore for not changing the tubes before. That was 4 years ago and I am still running on the original tyre and tube on the rear- with no puncture yet.

and pressure-- Check before every ride- it can lose 10psi overnight--30 in a week.
__________________
How long was I in the army? Five foot seven.


Spike Milligan
stapfam is offline   Reply With Quote
Old 03-15-10, 08:35 AM   #11
Bicycle Guy
Member
Thread Starter
 
Bicycle Guy's Avatar
 
Join Date: Jan 2010
Location: I.T. USA
Bikes: Schwinn Willy
Posts: 38
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for all the replies and information. Now I have some good name brands to look for.

I might have mine changed out at the first tune up, too a well known brand. Those that came with the bike are probably the least expensive made. New tubes may hold pressure better-may not, but worth a try.


Ken
Bicycle Guy is offline   Reply With Quote
Old 03-15-10, 11:52 AM   #12
StephenH
Uber Goober
 
StephenH's Avatar
 
Join Date: Sep 2007
Location: Dallas area, Texas
Bikes:
Posts: 11,210
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I check my tires before every ride, but I think the majority of the air loss is from the checking itself. It amounts to about 2 pumps before each ride, and I'm using the gauge on the pump anyway.
__________________
"be careful this rando stuff is addictive and dan's the 'pusher'."
StephenH is offline   Reply With Quote
Old 03-15-10, 02:06 PM   #13
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: 17,710
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Quote:
Originally Posted by operator View Post
You imagine wrong.

Butyl tubes will retain air the best, followed by polyurethan and latex. Latex you'll need to pump up almost mid-ride if you do 120km++
Comparing one brand of polyisobutylene tube to another, there is little difference in the air permeability. I doubt that too many people are going to run across a latex tube (expensive, fragile and difficult to repair) or polyurethane (last one of those was made in, what, 1992?)

rumrunn6's statement is correct for butyl tubes.


Quote:
Originally Posted by Bicycle Guy View Post
Who makes some of the best inner tubes on the market, and how often do most people have to add pressure to their tires?

I seem to have to increase mine every two to three days and add between 7-10 pounds of pressure.

I typically keep 70-75 lbs pressure in the tubes.

Thanks
Ken
While butyl rubber tubes are very good at keeping the air in them, the air will diffuse through them no matter what. Pumping up once a week or so isn't out of the question on bicycle tires. If you use CO2, they won't hold pressure overnight since the butyl rubber is very permeable to that gas.

Your leak rate seems a little high which may mean you have a pin hole. Those can be a bugger to find. Pump the tube up so that it is very large and dunk it in water. Inspect the tube a few inches at a time and wipe away any trapped air bubbles. If the bubble comes back, you have the leak. Otherwise, just pump up the tire.
__________________
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 03-16-10, 11:26 AM   #14
cachehiker
Soma Lover
 
Join Date: Dec 2004
Location: Logan, UT
Bikes: one bike for every day of the week
Posts: 765
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Bicycle Guy View Post
Those that came with the bike are probably the least expensive made.
Three pumps once a week for me on all but one of my bikes. The Ksyrium/Pro Race setup has Michelin Ultralight Tubes in it and loses air at twice that rate. I also noticed the old Stumpjumper FSR I bought and sold a year later was losing air quite fast. When I had the first flat a couple of months later, I found some no-name ultralight tubes in the tires. I replaced them with a standard thickness QBP's and the issue went away. I suspect the manufacturer did this for 4 reasons: to make the ride feel smoother, to make the bike feel faster, to make the bike 3 ounces lighter for marketing purposes, and BECAUSE THE TUBES WERE CHEAPER.

I currently have three brands of tubes stacked up in the basement. 80% of them are the basic QBP brand from the LBS. They work just fine. However, in addition to the Michelin Ultralights, there are some Vredestein road tubes that I originally grabbed on short notice. I forget why. For some reason they seemed a bit tougher and easier to mount than most. Since my roadie friends are always watching the clock and want to see flats fixed as fast as possible, I went in and grabbed another handful of them. It's a subtle difference but pinching a tube when I'm trying to work fast sucks so they were worth the extra $2 a pop to me.
cachehiker 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 08:56 AM.