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Punctures on newish bike.

Started by Martin Dann · · Last activity · 25 posts · 619 views

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UK and Europe
Published
20 November 2006
Last activity
21 November 2006
Original author
Martin Dann
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  1. I bought a Ridgeback Cyclone about three months ago, and have been
    commuting 16 miles 4-5 days a week. About 800-1000 miles in total.
    I have had no punctures until cycling home on Thursday night the pucture
    fairy visited the rear wheel. The offending piece of glass was removed,
    and the inner tube replaced.
    Saturday night I the puncture fairy visited the front wheel with a thorn
    or stone or something similar.
    Then last night the rear was nearly flat when I got home. (I have not
    investigated the cause yet).

    Is this just bad luck, or do my tyres need replacing, they do not look
    worn. I would have thought that they should last longer than 800-1000 miles.

    I believe the tyres are Continental Contact Sports.
    On my Trek for the same commute I was using City Jets, which lasted at
    least 4000 miles.

    Martin.

  2. Martin Dann <[email hidden]> writed in

    Quoted message said:

    Is this just bad luck, or do my tyres need replacing, they do not look
    worn. I would have thought that they should last longer than 800-1000
    miles.


    This sounds like bad luck - bad luck happens!
    The roads have been pretty grotty with all sorts of debris over the last
    few days here - what with wind and lots of rain, ideal conditions for
    rubbish to come out of hiding and getcha!
    I tend to see sidewalls going before I have problems with punctures as a
    sign of wear on commuting / touring bikes.

  3. Martin Dann said:

    Is this just bad luck, or do my tyres need replacing, they do not look
    worn. I would have thought that they should last longer than 800-1000
    miles.

    If they don't look worn then it's probably just bad luck. I once had 3
    in a month with perfectly serviceable tyres, followed by about a year on
    the same ones with nothing.

    When they do wear oit consider something with a kevlar belt to keep the
    worst out. Some things will get through those, but it's noticeably rarer.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  4. In article <[email hidden]>, Martin Dann

    Quoted message said:

    Is this just bad luck, or do my tyres need replacing, they do not
    look worn. I would have thought that they should last longer than
    800-1000 miles.

    Mostly bad luck - I had 9 punctures in almost 60,000 miles during
    July and August. In May and September with a lot less miles I had 23.

    May and September it rained - July and August were beautifully dry.

    hth

    --
    A T (Sandy) Morton
    on the Bicycle Island
    In the Global Village
    http://www.millport.net

  5. Sandy Morton said:

    In article <[email hidden]>, Martin Dann

    Quoted message said:

    Is this just bad luck, or do my tyres need replacing, they do not
    look worn. I would have thought that they should last longer than
    800-1000 miles.

    Mostly bad luck - I had 9 punctures in almost 60,000 miles during
    July and August. In May and September with a lot less miles I had 23.

    May and September it rained - July and August were beautifully dry.

    hth


    60,000 miles in 2 months, and only 9 punctures. That's a puncture every
    6666 miles.

    What diameter are your thighs?

  6. Martin Dann wrote on 20/11/2006 13:50 +0100:

    Quoted message said:


    Is this just bad luck, or do my tyres need replacing, they do not look
    worn.

    Just bad luck and the time of year with all the wet. I had my first
    puncture of the year on Friday. Didn't discover it until I left for the
    train this morning. Quick puncture repair and then a 5 mile gasp and
    pant hoof to the main station instead of the local to catch the next
    fast train with 4 minutes to spare got me back on schedule. Memo to
    self: Check tyres on a Sunday night.

    --
    Tony

    "Anyone who conducts an argument by appealing to authority is not using
    his intelligence; he is just using his memory."
    - Leonardo da Vinci

  7. On Mon, 20 Nov 2006 14:13:26 +0000, Rola <[email hidden]>

    Quoted message said:
    Sandy Morton said:

    In article <[email hidden]>, Martin Dann

    Quoted message said:

    Is this just bad luck, or do my tyres need replacing, they do not
    look worn. I would have thought that they should last longer than
    800-1000 miles.

    Mostly bad luck - I had 9 punctures in almost 60,000 miles during
    July and August. In May and September with a lot less miles I had 23.

    May and September it rained - July and August were beautifully dry.

    hth


    60,000 miles in 2 months, and only 9 punctures. That's a puncture every
    6666 miles.

    What diameter are your thighs?

    Sandy's being a little unfair. He not only gets other people to do his
    mileage, he charges them for the privilege.

    Tim

  8. Sandy Morton wrote on 20/11/2006 14:02 +0100:

    Quoted message said:

    In article <[email hidden]>, Martin Dann

    Quoted message said:

    Is this just bad luck, or do my tyres need replacing, they do not
    look worn. I would have thought that they should last longer than
    800-1000 miles.

    Mostly bad luck - I had 9 punctures in almost 60,000 miles during
    July and August.

    I presume that is the sum of all your customers on all your bikes, not
    your own personal mileage ;-)

    Otherwise you are Alan Holmes averaging 78mph, 24/7, for two months and
    ICMFP.

    --
    Tony

    "Anyone who conducts an argument by appealing to authority is not using
    his intelligence; he is just using his memory."
    - Leonardo da Vinci

  9. Tony Raven wrote on 20/11/2006 14:31 +0100:

    Quoted message said:

    Otherwise you are Alan Holmes averaging 78mph, 24/7, for two months and
    ICMFP.

    Whoops, I meant 40mph

    --
    Tony

    "Anyone who conducts an argument by appealing to authority is not using
    his intelligence; he is just using his memory."
    - Leonardo da Vinci

  10. Following on from Peter Clinch's message. . .

    Quoted message said:

    When they do wear oit consider something with a kevlar belt to keep the
    worst out. Some things will get through those, but it's noticeably rarer.

    The other thing (I expect you're already aware but neither of us is
    clairvoyant) is keeping tyre pressures up. This reduces the road
    contact area so reduces the probability of a spike doing its dastardly
    business. Kevlar belt protection doesn't extend to the side walls and
    gets thinner at the transition from tread bit to side wall.

    In my limited experience a puncture will go flat within an hour but a
    slow leak, as per your third annoyance, suggests a valve or not very
    good patch.

    --
    PETER FOX Not the same since the borehole business dried up
    [email hidden]
    2 Tees Close, Witham, Essex.
    Gravity beer in Essex <http://www.eminent.demon.co.uk>

  11. In article <[email hidden]>, Tony Raven

    Quoted message said:

    I presume that is the sum of all your customers on all your bikes,
    not your own personal mileage ;-)

    Yep - managed about 35 miles myself:-)

    --
    T h e - e x t e n d e r ! ! ! !

  12. In article <[email hidden]>, Tim Hall

    Quoted message said:

    Sandy's being a little unfair. He not only gets other people to do


    his

    Quoted message said:

    mileage, he charges them for the privilege.

    Charges are very reasonable - see the website and don't comment on
    the colour:-(

    --
    A T (Sandy) Morton
    on the Bicycle Island
    In the Global Village
    http://www.millport.net

  13. Sandy Morton wrote on 20/11/2006 14:48 +0100:

    Quoted message said:

    In article <[email hidden]>, Tim Hall

    Quoted message said:

    Sandy's being a little unfair. He not only gets other people to do


    his

    Quoted message said:

    mileage, he charges them for the privilege.

    Charges are very reasonable - see the website and don't comment on
    the colour:-(

    I think your website must have a puncture. I have text and pictures all
    overlaying each other in an orgy of mutual obliteration. Tried it in
    both Firefox and IE7 with no difference in either.

    --
    Tony

    "Anyone who conducts an argument by appealing to authority is not using
    his intelligence; he is just using his memory."
    - Leonardo da Vinci

  14. Peter Fox <[email hidden]>typed

    Quoted message said:

    In my limited experience a puncture will go flat within an hour but a
    slow leak, as per your third annoyance, suggests a valve or not very
    good patch.

    I disagree.

    I once had a thorn in my tyre for three weeks before it went flat. Some
    of my leaks were very slow...

    ....but some went *BANG* in the night.

    --
    Helen D. Vecht: [email hidden]
    Edgware.

  15. In article <[email hidden]>, Tony Raven

    Quoted message said:

    I think your website must have a puncture. I have text and
    pictures all overlaying each other in an orgy of mutual
    obliteration. Tried it in both Firefox and IE7 with no difference
    in either.

    I had a total computer crash recently and hadn't checked it since
    then. It's now on the list of things to do!

    --
    T h e - e x t e n d e r ! ! ! !

  16. Helen Deborah Vecht wrote on 20/11/2006 14:59 +0100:

    Quoted message said:


    I once had a thorn in my tyre for three weeks before it went flat. Some
    of my leaks were very slow...

    ....but some went *BANG* in the night.

    Sometimes the leak is very slow until you spot the thorn, pull it out
    and whoosh, instant flat tyre.

    --
    Tony

    "Anyone who conducts an argument by appealing to authority is not using
    his intelligence; he is just using his memory."
    - Leonardo da Vinci

  17. Sandy Morton said:

    In article <[email hidden]>, Tim Hall

    Quoted message said:

    Sandy's being a little unfair. He not only gets other people to do


    his

    Quoted message said:

    mileage, he charges them for the privilege.

    Charges are very reasonable - see the website and don't comment on
    the colour:-(


    You might like to run your pages through validator.w3.org.

    I can't read most of your pages. (firefox on windows). I think this is
    mostly due to missing </DIV> tags.

    Tim.

  18. Tony Raven <[email hidden]>typed

    Quoted message said:

    Helen Deborah Vecht wrote on 20/11/2006 14:59 +0100:

    Quoted message said:
    Quoted message said:


    I once had a thorn in my tyre for three weeks before it went flat. Some
    of my leaks were very slow...

    ....but some went *BANG* in the night.

    Quoted message said:

    Sometimes the leak is very slow until you spot the thorn, pull it out
    and whoosh, instant flat tyre.

    That's why I *know* the thorn was there for three weeks. ICBA to remove
    it until the tyre went down...

    --
    Helen D. Vecht: [email hidden]
    Edgware.

  19. Peter Fox said:

    The other thing (I expect you're already aware but neither of us is
    clairvoyant) is keeping tyre pressures up. This reduces the road
    contact area so reduces the probability of a spike doing its dastardly
    business. Kevlar belt protection doesn't extend to the side walls and
    gets thinner at the transition from tread bit to side wall.

    That theory has to be balanced with the one that says higher pressure
    increases the chance of an object penetrating in general.

    Kevlar belting in tyres tends to be so minimal that you might as well forget
    about it.

    ~PB

  20. On 20/11/2006 13:50, Martin Dann said,

    Quoted message said:

    I bought a Ridgeback Cyclone about three months ago, and have been
    commuting 16 miles 4-5 days a week. About 800-1000 miles in total.
    I have had no punctures until cycling home on Thursday night the pucture
    fairy visited the rear wheel. The offending piece of glass was removed,
    and the inner tube replaced.
    Saturday night I the puncture fairy visited the front wheel with a thorn
    or stone or something similar.
    Then last night the rear was nearly flat when I got home. (I have not
    investigated the cause yet).

    You don't need to do anything. Punctures come in three's, and you're
    lucky enough to have had your allocation all in one hit :-)

    --
    Paul Boyd
    http://www.paul-boyd.co.uk/

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