Cycling Equipment · Public discussion

Tires and leaks

Started by Kelly_P · · Last activity · 11 posts · 377 views

This thread is locked and is currently read-only.

Thread navigation

Jump through the discussion

Go to the original post, the replies on this page, or the latest preserved contribution.

Thread details

What we know about this thread

Original section
Cycling Equipment
Published
17 March 2006
Last activity
17 March 2006
Original author
Kelly_P
Posts
11
Discussion status
Public discussion
Total views
377
Views / 30 days
0

The navigation and discussion metadata provide context. Posts remain in their original chronological order.

Showing posts 1–11 of 11
Posts remain in their original chronological order.

Text size
  1. Hello all.

    I need help. My bicycle is my main transport in my neighborhood,
    and I've had three major flats within the past year. I can pump air
    into the tires, but I'm afraid of running out of air in the tanks!
    Is there an available tire that can minimize punctures and leaks ?

    I can aviod glass and other objects in the streets, but I try to avoid
    contact with major thoroughfares as much as possible. This means
    riding over rough, grassy areas many times where sharp objects
    are not so easily noticed.

    Thank you fror your time and help.

    Kelly Paul Graham

  2. On 16 Mar 2006 21:32:09 -0800, "Kelly_P" <[email hidden]>

    Quoted message said:

    Hello all.

    I need help. My bicycle is my main transport in my neighborhood,
    and I've had three major flats within the past year. I can pump air
    into the tires, but I'm afraid of running out of air in the tanks!
    Is there an available tire that can minimize punctures and leaks ?

    I can aviod glass and other objects in the streets, but I try to avoid
    contact with major thoroughfares as much as possible. This means
    riding over rough, grassy areas many times where sharp objects
    are not so easily noticed.

    The main tactics frequently suggested for this are:

    Install an anti-punture tire liner between the tube and the tire.
    These have some drawbacks. Some liners have sharp edges or may
    develop wrinkles which can chafe a hole in a tube eventually, any
    liner increases rolling resistance to some extent, and they add weight
    to the bike. Their effectiveness varies; the best will stop most
    small sharp things from puncturing a tube.

    Change to a puncture-resistant tire. There are several brands, such
    as the Specialized Armadillo, which employ a mixture of technologies
    to reduce flats; their main thrust is just to make it harder to poke a
    hole in the tread. Once again, effectiveness is not 100%, and
    increased rolling resistance is generally going to be seen relative to
    most common tires.

    Add Slime as a flat-stopping measure. Effectiveness, as before, is
    not 100%, but using Slime will frequently allow the rider to proceed
    to destination without even necessarily knowing that a puncture has
    taken place. There are at least two common known drawbacks to this.
    The first is that the fibers in the Slime compound tend to foul the
    valve and cause a slow (or even not-so-slow) leak that's difficult to
    stop. The second drawback is that the Slime compound's presence at
    the site of a puncture will make it much harder to perform a permanent
    repair once the tube has been removed.

    Switch to a thicker-walled "thorn resistant" tube. In theory,
    anything that makes the tread/tube wall section thickness greater
    should reduce punctures, and this type of tube can add up to 4mm of
    additional penetration depth. As usual, there's both a weight and a
    rolling resistance penalty involved, and the effectiveness of the
    tactic will be determined by the nature of the things that are causing
    the punctures; the longer they are, the less effective this tactic
    becomes.

    Switch to an "airless tire", or the equivalent, a shaped foam
    surrogate in place of the inner tube. While either of these will
    absolutely preclude flats, they have the highest rolling resistance
    penalty, and they make the bike ride *very* rough due to the lack of
    compressibility of the foam that fills the tube. Installing these is
    widely regarded as a fool's education; it's difficult and/or
    frustrating at best. They are widely disparaged as a result of both
    their installation issues and their performance shortcomings. One
    local Wal-Mart is presently closing out its inventory of the foam
    inner tube surrogates; they didn't sell very well. Unsurprisingly,
    they're still not selling, even after getting marked down to half
    price.

    It is also possible to employ combinations of all of the tactics
    except the last one; you could, if you so desired, put Slime in a
    thorn-resistant tube, and install that plus a tire liner in a
    Specialized Armadillo (or other puncture-resistant) tire. If, at that
    point, you got a flat, you would be fully justified in calling a cab
    IMO.
    --
    Typoes are a feature, not a bug.
    Some gardening required to reply via email.
    Words processed in a facility that contains nuts.

  3. Kelly_P said:

    Hello all.

    I need help. My bicycle is my main transport in my neighborhood,
    and I've had three major flats within the past year. I can pump air
    into the tires, but I'm afraid of running out of air in the tanks!

    Don't know what tanks you're referring to. Depending on how much you
    ride, 3 flats in a year isn't abnormal.

    Quoted message said:

    Is there an available tire that can minimize punctures and leaks ?

    Leakage is a function of the inner tube (the part inside the tire that
    actually contains the air), and most normal tubes of a given size will
    loose air at about the same rate unless there's something going wrong
    with the tube. Pumping up your tires every 1-2 weeks is about normal.

    There are numerous options for avoiding punctures. These include tires
    with some kind of built-in shielding (usually Kevlar), add-on tire
    liners, liquid tire sealants and extra thick, heavy "thornproof" tubes.
    Generally, I think shielded tires (which are light and all the extra
    protection needed for many) and/or tire liners (which are usually very
    effective, and still pretty light) if desired are the first picks, but
    this is a frequently debated thing. Sealants can be a mess and
    thornproof tubes are very heavy. This is all changes in thornier areas.

    Worn out tires cause more frequent flatting. Also, it's somewhat common
    for repeat flats to be caused over and over by the same piece of debris
    stuck in the tire if it's not dealt with when fixing the flat. This can
    also happen with other irregularities that are causing flats. This is
    worth thinking about whenever back-to-back flats occur.

    Quoted message said:

    I can aviod glass and other objects in the streets, but I try to avoid
    contact with major thoroughfares as much as possible. This means
    riding over rough, grassy areas many times where sharp objects
    are not so easily noticed.

    Thank you fror your time and help.

    Kelly Paul Graham

  4. "Kelly_P" wrote

    Quoted message said:

    I can pump air into the tires, but I'm afraid of running out of air in the
    tanks!

    Is your neighborhood underwater or in space?
    In my neighborhood there's loads of air just sloshing around.
    The quality may be a bit iffy but I don't worry about running out.

  5. Per Kelly_P:

    Quoted message said:

    three major flats within the past year

    Some people who read this are thinking that's not too bad.

    I've gotten three flats on a single 3-hour ride.

    One strategy that nobody's mentioned yet is to carry a spare tube and learn how
    to change a tube and/or patch a flat quickly.

    There's definitely a technique/procedure to this and once you learn it, you
    should be able to be back up and running within ten minutes of getting a flat.
    --
    PeteCresswell

  6. On Fri, 17 Mar 2006 08:42:39 -0500, "(PeteCresswell)" <[email hidden]>

    Quoted message said:

    One strategy that nobody's mentioned yet is to carry a spare tube and learn how
    to change a tube and/or patch a flat quickly.

    There's definitely a technique/procedure to this and once you learn it, you
    should be able to be back up and running within ten minutes of getting a flat.

    Works well if you're always habitually running early on the commute
    and/or have an employer/supervisor with a sane attitude toward on-time
    arrival. (I.e., that it won't *always* happen.) Habitually running
    early to a job can be giving an unappreciative employer free work, but
    there are lots of employers around whose expectation is that no one
    will *ever* be late to their (underpaid, oversupervised) positions,
    and in such cases it's treated as a Major Transgression when it
    happens. (I've had too many of these over the years.)

    --
    Typoes are a feature, not a bug.
    Some gardening required to reply via email.
    Words processed in a facility that contains nuts.

  7. "Werehatrack" wrote

    Quoted message said:
    Quoted message said:

    There's definitely a technique/procedure to this and once you learn it,
    you
    should be able to be back up and running within ten minutes of getting a
    flat.

    Works well if you're always habitually running early on the commute
    and/or have an employer/supervisor with a sane attitude toward on-time
    arrival. (I.e., that it won't *always* happen.)

    So have you a more reliable way to commute than a bike that occasionally
    gets a flat, unless you live within walking distance of work?
    Cars break down too and are much more prone to traffic hold ups, as is the
    bus.
    Trains and tubes/subways are way less reliable.
    IME the bike is the best bet for reliability.

  8. Werehatrack said:

    On Fri, 17 Mar 2006 08:42:39 -0500, "(PeteCresswell)" <[email hidden]>

    Quoted message said:

    One strategy that nobody's mentioned yet is to carry a spare tube and learn how
    to change a tube and/or patch a flat quickly.

    There's definitely a technique/procedure to this and once you learn it, you
    should be able to be back up and running within ten minutes of getting a flat.

    Works well if you're always habitually running early on the commute
    and/or have an employer/supervisor with a sane attitude toward on-time
    arrival. (I.e., that it won't *always* happen.) Habitually running
    early to a job can be giving an unappreciative employer free work,

    So ride around the block a couple of times if you're early, or grab a
    newspaper, or, well, do anything to not come in early.

    Thankfully as long as I show up sometime between 9am and 1pm my boss is
    happy.

    Greg

    --
    "All my time I spent in heaven
    Revelries of dance and wine
    Waking to the sound of laughter
    Up I'd rise and kiss the sky" - The Mekons

  9. "G.T." <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Werehatrack said:

    On Fri, 17 Mar 2006 08:42:39 -0500, "(PeteCresswell)" <[email hidden]>
    wrote:

    Works well if you're always habitually running early on the commute
    and/or have an employer/supervisor with a sane attitude toward on-time
    arrival. (I.e., that it won't *always* happen.) Habitually running
    early to a job can be giving an unappreciative employer free work,

    So ride around the block a couple of times if you're early, or grab a
    newspaper, or, well, do anything to not come in early.

    Or just spend the extra time doing something like reading newsgroups...

  10. POHB said:

    "Werehatrack" wrote

    Quoted message said:

    Works well if you're always habitually running early on the commute
    and/or have an employer/supervisor with a sane attitude toward on-time
    arrival. (I.e., that it won't *always* happen.)

    So have you a more reliable way to commute than a bike that occasionally
    gets a flat, unless you live within walking distance of work?
    Cars break down too and are much more prone to traffic hold ups, as is the
    bus.

    The automotive commute time to my most common AM destination (13 miles
    via the most direct route, 17 via the fastest and most reliable)
    varies by less than 3 minutes with the common interruptions, and has
    not varied by more than five minutes over the course of three years.
    In the past six years, I have had one commute interrupted by car
    failure (flat tire) and one delayed by not starting (five minutes
    spent getting it jumped due to a flat battery); the car is 12 years
    old. I call that damned reliable.

    Quoted message said:

    Trains and tubes/subways are way less reliable.

    Here, it's not so much their reliability as their availability and
    speed that makes them impractical. The only bus route downtown from
    my neighborhood runs twice an hour, and I can race the bus to the
    downtown library on my bike and win most of the time without working
    up a sweat. Taking the schedule into account, I can beat it downtown
    by an average of 15 minutes simply by leaving when I am ready instead
    of waiting for the bus...but if it's raining, I'll drive instead. To
    use the city bus system for the morning commute I mentioned above, a
    bike would be faster by over an hour. This isn't as much praise for
    the bike as it is an acknowledgement of the fact that the local bus
    system isn't good for much. *Walking* can be faster between many
    points.

    Quoted message said:

    IME the bike is the best bet for reliability.

    Maybe. If you need to be able to consistently arrive dry, don't rely
    primarily on a bike in Houston, TX, for example. If you live in
    Minneapolis (or someplace similar), a bike isn't terribly useful for
    several months of the year due to ice, snow, and frigid temperatures.
    And in many parts of the US, a bike simply won't get you from point A
    to point B because the only feasible route is off-limits to that mode
    of transport; most freeways are so designated. Reliability of the
    device itself may not indicate reliability of its usefulness in a
    given situation.

    U.S. mass transport is entirely based on the automobile in all but a
    handful of very large cities, and it's still the backbone of mass
    transit in most of those. Bikes *could* replace some of that, but the
    average U.S. commuter is unlikely to try to ride a bike 22 miles each
    way; that's the typical commute distance here. Telling them to move
    closer to where they work is, in most of the U.S., futile. Too many
    people own their homes and can't sell without an unacceptable cost.
    The persistent application of "zoning" has worked to physically
    separate the industrial, office, commercial and residential areas, and
    has acted to stratify the residential neighborhoods as well, with the
    result that it is unlikely that affordable and/or suitable (if *any*)
    housing will be found within a reasonable distance of any given
    job....and if it is, that won't remain the case when the employer
    moves you to another location, or the job evaporates and is replaced
    by one many miles away (and the lease on the apartment has 6 months to
    run), etc., as happens on a too-regular basis for most workers.

    It's all very well to advocate bikes for commuting, but a widespread
    shift won't occur in most of the U.S. without a lot of other changes
    to pave the way. It may happen. There are locales in which this is
    slowly shifting already; I'm in one of them. We're seeing old,
    dilapidated industrial and warehousing districts razed and converted
    to residences, we're seeing long-neglected near-city-center residences
    renovated and occupied by professionals with an inner-loop practice,
    we're seeing blighted near-downtown areas with low occupancy torn down
    and converted to mid-price condos that are selling to people who work
    nearby, etc. None of this would be taking place (or at least, not so
    freely and swiftly) if Houston had the kind of obsession with
    Byzantine restrictions on land use that is common elsewhere, but the
    very lack of "planning" in this city is now producing areas with an
    amazing hodgepodge of business, industry, residence, commerce and
    entertainment, and a range of resident incomes in a single
    neighborhood that covers all of the tax brackets.

    Now, if we could just lose that damn Rodeo...
    --
    Typoes are a feature, not a bug.
    Some gardening required to reply via email.
    Words processed in a facility that contains nuts.

  11. Werehatrack wrote:
    <snip some good stuff>

    You were doing so well until.....

    Quoted message said:

    Now, if we could just lose that damn Rodeo...

    HERETIC!

    Kevin (in Houston who has never been to the Fat
    Stock Show)

Active in the last 60 minutes

Active in this thread

0 users · 0 guests ·0 bots ·0 total

No signed-in users are active right now.

No known search crawlers active right now.