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Inner tubes

Old 06-18-17, 02:00 PM
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perros10
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Inner tubes

Hello, I was inflating my brand new continental 26x1.9 inner tube and at around 40psi it just exploted, it has a margin of lower 35psi and 65psi high,I've done and followed all proper instructions regarding HOW TO,,,front tire no issues
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Old 06-18-17, 02:17 PM
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You most likely had one spot pinched between the rim and tire. Easy to do if you don't double check. Patch it and try again!
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Old 06-18-17, 02:46 PM
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That one doesn't sound patchable. When you install a new tube inflate tube a little bit first and a lot less chance of pinching but always check it isnt first before pumping to full pressure. Also check if blown tube has a ripped seam, sometimes a defective tube. Or make sure hole isnt on inside of tube. A sign of a spoke poked tube. Then check outside of tube, may be foreign material in tread
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Old 06-18-17, 05:21 PM
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Originally Posted by hillyman View Post
That one doesn't sound patchable. When you install a new tube inflate tube a little bit first and a lot less chance of pinching but always check it isnt first before pumping to full pressure. Also check if blown tube has a ripped seam, sometimes a defective tube. Or make sure hole isnt on inside of tube. A sign of a spoke poked tube. Then check outside of tube, may be foreign material in tread
I can tell you for sure that it isn't a ripped seam. Inner tubes don't have seams. What looks like a seam is actually the parting line for the form in which the inner tube was vulcanized.
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Old 06-18-17, 05:51 PM
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Was it a long split in the tube, and a loud bang? That's due to the bead coming off the rim, letting the tube blow up like a balloon. The usual reason is a fold of tube caught under the tire bead before pumping the tire.

I commented in more detail in another thread.

Last edited by rm -rf; 06-18-17 at 05:54 PM.
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Old 06-18-17, 06:34 PM
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Originally Posted by rm -rf View Post
Was it a long split in the tube, and a loud bang? That's due to the bead coming off the rim, letting the tube blow up like a balloon. The usual reason is a fold of tube caught under the tire bead before pumping the tire.

I commented in more detail in another thread.
Yep, this. I had this happen once while working on a bike late at night! Oops!

I usually put a bit of air in, go around the edges of the tire to make sure the bead is seated, continue, check again, and then finish inflating.
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Old 06-18-17, 06:44 PM
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There's a line molded into most tires, a few mm away from the bead. When the tire's bead is properly seated and there's no tube caught under it, that line should be equidistant from the rim all the way around the tire. Put a few PSI in the tire, then spin the wheel slowly while watching that line. If you don't see a spot where the line dips or jumps relative to the rim, you're good to keep pumping.
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Old 06-18-17, 09:18 PM
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I'm assuming the tube was in the tire and the tire was mounted to the wheel. Right?
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Old 06-19-17, 11:47 AM
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Inner tubes

I want to thank all the advices and teaching me US in general in regards of inner tubes.
I called nashbar to get another inner tube and they don't sell that Continental type brand, I found a dollar tree inner tube brand new in my shop and I left it at 20psi all night and kept it, I am not going to trip about too much, someone here made a comment about IF YOU HAVE 26" TIRES ,ANY TIRE AND 26" INNER TUBES SHOULD FIT,and I agree, I'm not going to France to compete this year lmao ,ok ty guys,
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Old 06-19-17, 11:57 AM
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Blow the tire off the rim? your installation error.
inner tubes are like balloons,
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Old 06-19-17, 12:03 PM
  #11  
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Some tubes do have seams.

Less expensive tubes are made from a long strip, bonded along it's length.

Higher quality tubes such as those made by Continental are extruded.


-Tim-
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Old 06-19-17, 03:39 PM
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Originally Posted by TimothyH View Post
Some tubes do have seams.

Less expensive tubes are made from a long strip, bonded along it's length.

Higher quality tubes such as those made by Continental are extruded.


-Tim-
Not any tube that I've seen in the last 40 years, including thousands of them at my local co-op. If it's made it comes through our co-op at some point.
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Old 06-25-17, 07:54 PM
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Broken chain

Well as happy as I was riding my bike with new inner tubes and Vittoria EVOLUTION the chain brakes
I counted the links and 56 it is, covers 7 8 9 speeds,
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Old 06-26-17, 01:46 PM
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breaks if your brakes break youll be broken
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Old 06-26-17, 01:48 PM
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Originally Posted by cyccommute View Post
Not any tube that I've seen in the last 40 years, including thousands of them at my local co-op. If it's made it comes through our co-op at some point.
picked up a bunch of cheapos from indonesia and they def had it, theyre also thin and dont last, but at least i saved a dollar
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Old 06-26-17, 01:56 PM
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Count again

A standard length chain as sold by bike shops has 112 to 116 links. There are 12 links per foot. If you measure the length of the chain, I bet you have 112 links. The same chain will fit 5/6/7/8 speeds but 9, 10, and 11 speed chains are all different. You can get a decent one on eBay for under $10 KMC Z51 5/6/7/8-Speed 3/32" Bicycle Chain w/ MissingLink 116L fits Shimano SRAM | eBay ($8.35 postpaid)
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Old 06-26-17, 02:01 PM
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Originally Posted by VegasTriker View Post
A standard length chain as sold by bike shops has 112 to 116 links. There are 12 links per foot. If you measure the length of the chain, I bet you have 112 links. The same chain will fit 5/6/7/8 speeds but 9, 10, and 11 speed chains are all different. You can get a decent one on eBay for under $10 KMC Z51 5/6/7/8-Speed 3/32" Bicycle Chain w/ MissingLink 116L fits Shimano SRAM | eBay ($8.35 postpaid)
I think it depends on how you count links.
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Old 06-26-17, 02:04 PM
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I count them the way the manufacturer does. Look at any chain box and you will find they count the chain as 112-116 links depending upon the maker.
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