Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Newbie cyclist, finding the correct inner tube size

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.

Newbie cyclist, finding the correct inner tube size

Old 07-09-13, 05:50 AM
  #1  
Greyze
Newbie
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Newbie cyclist, finding the correct inner tube size

Afternoon all,

I have been cycling for just over 2 months, about 30 miles a week. Unfortunately my back inner tube is damaged and needs a replacement.

Yesterday I had an extremely bad experience with Halfords store to get my back tyre going. Within an hour, they put two new inner tubes (their own brand) on the back wheel, both exploded within 10-20mins. So I am still currently without a bike, but have the tools to do it myself.

I just want to make sure I get the correct inner tube size/brand, I would hate to buy some things online, waiting for a few days to arrive and then find out they were the incorrect parts

My bike is a RidgeBack Motion
with the tyres: Continental Contact 700 37c (Schraeder valve preferred?)

The inner tube states 700 x 37, so i'm assuming this is the correct size tube I need. While Amazon and such seem to have the right sizes for me, I would love some suggestions just to be sure i'm not going on the wrong path here.. I don't want anymore exploding inner tubes like what I got from halfords.

Thanks everyone.
Greyze is offline  
Old 07-09-13, 06:01 AM
  #2  
dabac
Senior Member
 
Join Date: Mar 2008
Posts: 7,936
Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 813 Post(s)
Likes: 0
Liked 1 Time in 1 Post
Tubes are stretchy, so an exact match isn't required. A 700x37 will be a good match, although some people will deliberately run slightly narrower tubes for easier installation. Anything down to 30 will do fine. Up to 40 should be equally doable.

Keep in mind that 700C = 622 mm = 28".

Odds are exploding tubes are more a sign of poor installation technique rather than actual tubes being bad. Get a bit of tube trapped underneath the bead, and explosive failure is guaranteed.

I've happily used tubes from just about any brand that I've stumbled across, and I couldn't give you a favourite if my life depended on it. Schwalbe, Geax, Conti... Once out of the box I can't tell them apart.
dabac is offline  
Old 07-09-13, 06:12 AM
  #3  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,506

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by dabac View Post
Odds are exploding tubes are more a sign of poor installation technique rather than actual tubes being bad.
27/28/700c will all work. As long as the width of your tube is within the limits listed for the tube you are OK, though if you are at the low end the tube will be a tight fit and if you are at the upper end and the range is large the tube will be a bit thinner when inflated. So 30-40c works, 19-40c is literally a stretch, 35-47c is OK, a little tight.

Slight correction - exploding tubes are either poor installation or a problem with the bead or integrity of the tire. The tube has to escape the tire to explode, so the tube is almost never to blame.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!
cny-bikeman is offline  
Old 07-09-13, 06:50 AM
  #4  
Greyze
Newbie
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Alright, thanks for the help guys. So I'm assuming this an example of a good choice for my bike?

Size states 700 x (28 or 35C).. which is the perfect size?

Also this Kenda is a suitable choice because the range is 35-43c, except it would be a tight fit due to its size yes?

Or even this, except its just a presta valve which doesn't seem to be an issue.
Greyze is offline  
Old 07-09-13, 06:57 AM
  #5  
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 10,800

Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 661 Post(s)
Liked 26 Times in 22 Posts
If your rim is drilled for a Schraeder valve, there's no sense using a Presta.
The Presta stem diameter is smaller.
Bill Kapaun is offline  
Old 07-09-13, 07:17 AM
  #6  
bradtx
Senior Member
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,580

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 304 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Greyze, As long as your tire size is included in the range of the tube and has the proper valve stem (Yours appears to be a Schraeder valve.) you're good to go. A little tip is to inflate the tube only enough to give it some shape prior to installing. Then once the tire is mounted add a little more air for ~10 PSI and check the tire bead for proper engagement and that the tube isn't pinched by the tire.

Brad
bradtx is offline  
Old 07-09-13, 07:23 AM
  #7  
cny-bikeman 
Mechanic/Tourist
 
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,506

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 477 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Greyze View Post
Alright, thanks for the help guys. So I'm assuming this an example of a good choice for my bike?

Size states 700 x (28 or 35C).. which is the perfect size?

Also this Kenda is a suitable choice because the range is 35-43c, except it would be a tight fit due to its size yes?

Or even this, except its just a presta valve which doesn't seem to be an issue.
There is no perfect size of course - if they meet the criteria I listed they will work - given proper installation. Google install bicycle tube and study several sources, but no matter which ones you use end the installation of the 2nd tire bead at or near the valve, not opposite. As noted Presta valves are smaller in diameter, and they also require a different end on the pump or an adapter. If you have Schraeder valves stick with that.
__________________
There's no such thing as a routine repair.

Don't tell me what "should" be - either it is, it isn't, or do something about it.

If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

Please respect others by taking the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!
cny-bikeman is offline  
Old 07-09-13, 07:46 AM
  #8  
Greyze
Newbie
Thread Starter
 
Join Date: Jul 2013
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Alright, thanks alot everyone. Gonna get the tubes I linked and hopefully be back on the road by tomorrow
Greyze is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Tygra89
Classic and Vintage Bicycles: Whats it Worth? Appraisals.
4
04-07-17 10:16 AM
Epicus07
Classic and Vintage Bicycles: Whats it Worth? Appraisals.
12
09-01-15 07:55 PM
stumpyjoe
Bicycle Mechanics
9
05-27-09 05:54 PM

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

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