Butyl Tubes?
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Butyl Tubes?
I saw some on ebay. What're the pros/cons of butyl rubber tubes?
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Cost a lot more a little tuffer and litter but will not do anything against the evil goat heads on the trails and streats of Denver They will go through almost any tire tube combo they are slowed down a bit by Mister Tuffy's but not by much.
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Like ben4345 said, you probably already have them. Butyl rubber is the most common rubber used for inner tubes. Latex (natural rubber) tubes are rate because it is delicate and difficult to patch. It's not worth buying them off Fleabay. Go to your local shop.
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LOL. I hear ferrous alloy frames are the next big thing...
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As others have said most inner tubes are butyl, whether they make a claim about it or not. Butyl is used because it's more impervious to air molecules and so holds air better than other materials while still being strong and stretchy.
Don't let the tone of some of the other responses get to you. None of us, even the most expert, was born with this knowledge and had to learn it at some point in our lives.
Don't let the tone of some of the other responses get to you. None of us, even the most expert, was born with this knowledge and had to learn it at some point in our lives.
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#7
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Butyl is an (oil) butane product.. it is the norm for tubes.. latex loses air too fast ..
https://en.wikipedia.org/wiki/Butyl
all tires are mostly butyl rubber
https://en.wikipedia.org/wiki/Butyl
all tires are mostly butyl rubber
Last edited by fietsbob; 04-25-12 at 10:09 AM.
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With latex tubes, you need to pump up every ride. With butyl tubes you do it once a week (but could probably go much longer). Butyl tubes are quite a bit heavier than latex, but for a given thickness, latex is stretchier and therefore resists punctures better. Basically if it's black, it's probably butyl rubber.
-G
-G
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Um...not really. Butyl rubber is a polymer of 2-methylpropene. While this is a 4 carbon hydrocarbon, it's not really considered a 'butane' because a butane is a saturated hydrocarbon. In the polymer form, it's called polyisobutylene and contains some isoprene.
This is correct.
This is correct.
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Last edited by cyccommute; 04-25-12 at 01:20 PM.
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You used it incorrectly. Wikipedia is a little wrong because the IUPAC name for the 'isobutyl' group is the 2-methylpropyl group but they did list it correctly under the "Systematic Name". The "System" is the IUPAC system.
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As others have said most inner tubes are butyl, whether they make a claim about it or not. Butyl is used because it's more impervious to air molecules and so holds air better than other materials while still being strong and stretchy.
Don't let the tone of some of the other responses get to you. None of us, even the most expert, was born with this knowledge and had to learn it at some point in our lives.
Don't let the tone of some of the other responses get to you. None of us, even the most expert, was born with this knowledge and had to learn it at some point in our lives.
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Can't agree with that at all. Especially with high pressure road tires. I pump mine up before each ride. They can lose 5 psi or even more overnight.
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Latex tubes have lower rolling resistance (although tyre choice has more influence) and are lighter than equivalent butyl. But don't hold pressure very long, and puncture more easily. It's really a race-oriented product IMHO. For a while you could get polythene tubes from Nutrak but there wasn't much advantage that I found. So it's butyl tubes for me these days, Continental or Schwalbe usually.
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Wow. OK. Got it.
What were the tubes I saw advertised in the mid 90's where they were streching it over a big shard of glass?
What were the tubes I saw advertised in the mid 90's where they were streching it over a big shard of glass?
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Um...not really. Butyl rubber is a polymer of 2-methylpropene. While this is a 4 carbon hydrocarbon, it's not really considered a 'butane' because a butane is a saturated hydrocarbon. In the polymer form, it's called polyisobutylene and contains some isoprene.
This is correct.
This is correct.
I used to QC batches of butadiene rubber and styrene-butadiene rubbers. My job was gum dip latex for tire cord coating. Checked the bd going into the reaction vessels and the final latex going into the rail cars.
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Another good thing about butyl rubber tubes: If you have latex allergy, no problem.
Bad thing about latex tubes: If you have latex allergy --> problem.
Latex allergy is more common than it used to be.
Bad thing about latex tubes: If you have latex allergy --> problem.
Latex allergy is more common than it used to be.
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Pressure loss rate is a function of starting pressure so the higher the pressure the faster the tire will bleed down.
-G
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Have never used a latex tube in several decades of cycling - not sure if I've seen one. Have used many latex gloves and tourniquets, etc. in hospitals. Those are much, much less common than they used to be. Have not developed latex allergy thankfully.
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I'm curious to try latex tubes, but at $15 a tube it's not that urgent.
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You can simulate owning latex tubes without any expense - just let your tyres down by about half at the end of each day and then pump them up again in the morning before you go for a ride. I owned some when I was time-trialling every weekend but they did not appear to offer any benefit in reduced times at all, not even a placebo effect!
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Latex tubes are often sewn into high end tubulars for a reason.
I have used them with certain 320 TPI tires and the ride with Latex tubes in that scenario was as good as it gets for a layperson @ 700 x 23 ride IMHO.
Bear in mind everything is subjective and I have no empirical data to present.
No doubt the standard butyl inner tube is the way to go. Less care needed, cheaper and easily available.
I have used them with certain 320 TPI tires and the ride with Latex tubes in that scenario was as good as it gets for a layperson @ 700 x 23 ride IMHO.
Bear in mind everything is subjective and I have no empirical data to present.
No doubt the standard butyl inner tube is the way to go. Less care needed, cheaper and easily available.