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wheel overhaul (not)

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UK and Europe
Published
29 November 2004
Last activity
2 December 2004
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Email address hidden
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35
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  1. half_pint said:

    Pop down to Halfords and they will tell you the difference between a
    standard
    and mountain bike wheel, best not to ask a female assistant ;O)
    (no offence ladies).

    How does a 26" Alesa XPlorer commuter rim differ from a 26" Alesa
    XPlorer MTB rim, and how should my wife work out if she has the right
    one?

    And how would Halfords staff define the difference, given that they
    can't tell the difference between a pile of welded gas-pipe and a
    bicycle?[1] Specifically, how would they identify at a glance the
    difference between a 26" touring wheel and a 26" MTB wheel? And would
    they correctly identify the 26" Sun Rhyno wheels on my triplet as not
    being mountian bike wheels? This would require advanced skills
    (including: counting the spokes).

    [1] YHMV - but probably not

    Guy
    --
    May contain traces of irony. Contents liable to settle after posting.
    http://www.chapmancentral.co.uk

    88% of helmet statistics are made up, 65% of them at CHS, Puget Sound

  2. in message <[email hidden]>,

    (') said:

    You might have a point there: I'll try and remove one on each side.
    When the new ones were put in, there was about 1/2 -3/4s of a ball
    diameter spare room. I thought this about right, however, this is a
    new thing for me!

    That's about right.

    --
    [email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
    Copyright (c) Simon Brooke; All rights reserved. Permission is
    granted to transfer this message via UUCP or NNTP and to store it
    for the purpose of archiving or further transfer. Permission is
    explicitly denied to use this message as part of a 'Web Forum', or
    to transfer it by HTTP.

  3. James Annan <[email hidden]> wrote in message news:<[email hidden]>...

    Quoted message said:
    Dave Kahn said:

    You appear to be posting your advice from a position of deep
    ignorance. I suggest you check Sheldon's pages on wheel truing.

    You appear to be posting your advice from a position of deep
    ignorance. I suggest you check half-wit's posting history;-)

    I see what you mean. It's quite a short posting history but he does
    seem to have made a consistent impression.

    --
    Dave...

  4. "Simon Brooke" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    in message <[email hidden]>, half_pint

    (') said:

    "Dave Kahn" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    On Tue, 30 Nov 2004 17:15:50 -0000, "half_pint"
    <[email hidden]> wrote:

    >Fortunately I hve not been able to buckle the wheels on my mountaiin
    >bike they are far more robust than a 'standard wheel' which are very
    >easilly damaged.

    What is a standard wheel and how easily damaged do you think they
    are?

    They look petty similar to these pretty big with a thinish rim
    http://www.cyclestore.co.uk/itemviewer.asp?ID=13&type=wheels

    I am pretty sure you know the difference between a standard wheel and
    a mountain bike wheel.

    Speaking as someone who has built wheels both for road bikes and for
    mountain bikes, I don't know of any difference, apart from the fact
    that mountain bikes mostly (but not always) use 26 inch rims and road
    bikes mostly (but not always) use 700c rims.

    Bigger tyres do, of course, help protect the rims from damage.

    Well it has always been obvious to mr that mountain bike wheels are smaller
    in diameter and thicker in the rim.

    Quoted message said:


    --
    [email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

    ;; It appears that /dev/null is a conforming XSL processor.

  5. "Clive George" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:


    "Clive George" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    > I am pretty sure you know the difference between a standard wheel


    and

    Quoted message said:

    a

    Quoted message said:
    Quoted message said:

    > mountain bike wheel.

    Hey - I don't know the difference, and I've built a few in my time.


    Hub -

    Quoted message said:
    Quoted message said:

    check. Spokes - check. Rim - check. What's the difference then?

    Pop down to Halfords and they will tell you the difference between a
    standard and mountain bike wheel, best not to ask a female assistant ;O)
    (no offence ladies).

    But who should I ask if I want an answer from somebody who actually knows
    about bikes?

    You would be better off asking a qualified engineer, like myself.

    Quoted message said:


    clive

  6. "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Quoted message said:
    Quoted message said:

    > > I am pretty sure you know the difference between a standard
    > > wheel and a mountain bike wheel.
    >
    > Hey - I don't know the difference, and I've built a few in my time.
    > Hub - check. Spokes - check. Rim - check. What's the difference


    then?

    Quoted message said:
    Quoted message said:
    Quoted message said:


    Pop down to Halfords and they will tell you the difference between a
    standard and mountain bike wheel, best not to ask a female assistant


    ;O)

    Quoted message said:
    Quoted message said:
    Quoted message said:

    (no offence ladies).

    But who should I ask if I want an answer from somebody who actually


    knows

    Quoted message said:
    Quoted message said:

    about bikes?

    You would be better off asking a qualified engineer, like myself.

    Which institute?

    I did ask you - it's quoted up there.

    FWIW my rims are the same thickness as many MTB rims.

    My advice to you is to stop digging and admit that your definition of
    'standard' wasn't terribly helpful.

    clive

  7. half_pint said:

    You would be better off asking a qualified engineer, like myself.

    No [censored]! Who qualified you as an engineer?

    Seriously, I want to know!

    --
    Eur. Ing. Joe, CEng MIMechE MIGEM

  8. "Dave Kahn" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    "half_pint" <[email hidden]> wrote in message


    news:<[email hidden]>...

    Quoted message said:
    Quoted message said:

    "Dave Kahn" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Quoted message said:

    Depends how bad the buckle is. If you could pull the buckle back to
    the centre you probably could have got the wheel pretty close to true.

    And probably pull the rest of the wheeel out of true, i think you would
    probably need to remove the rim, and hammer/bend it flat and round


    first.

    Quoted message said:


    You appear to be posting your advice from a position of deep
    ignorance. I suggest you check Sheldon's pages on wheel truing. If you
    really want to understand wheels you might try reading The Bicycle
    Wheel by Jobst Brandt.

    I somehow doubt that, even though he looks like a nit of a "nutter"
    from his photograph, he describes wheel building as an art which
    needs to be mastered.
    It is clear from the length of his article on wheel building
    that it is an art which needs to be mastered, (a bit like pot throwing
    perhaps), and this is from the starting point of an undamaged
    rim.
    Trying to 'true' a buckled wheel is probably nigh on
    impossible. Apart from anything else you will never get
    all the spokes to the same tension.
    Note he doesnot even attempt to describe how to remove
    a buckle from a wheel. Removing the rim completely
    and hammering it straight is probably the only option.

    Quoted message said:


    Quoted message said:
    Quoted message said:

    What is a standard wheel and how easily damaged do you think they are?

    They look petty similar to these pretty big with a thinish rim
    http://www.cyclestore.co.uk/itemviewer.asp?ID=13&type=wheels

    I am pretty sure you know the difference between a standard wheel and a
    mountain bike wheel.

    I now know what /you/ mean by standard, but I'm puzzled as to why you
    think an MA3 is a standard rim and a typical MTB rim is not.

    Quoted message said:
    Quoted message said:

    A well built wheel should be able to go for thousands of miles of hard
    riding without going out of true.

    Not it you ride it up and down a few curbs.

    Yes, including kerbs. Dropping off them is no problem at all. Riding
    up them you should hop or at least unweight the bike.

    --
    Dave...

  9. half_pint said:
    Quoted message said:

    But who should I ask if I want an answer from somebody who actually knows
    about bikes?

    Quoted message said:

    You would be better off asking a qualified engineer, like myself.

    Speaking as a qualified engineer, you are this: A halfwit.

    Guy
    --
    May contain traces of irony. Contents liable to settle after posting.
    http://www.chapmancentral.co.uk

    88% of helmet statistics are made up, 65% of them at CHS, Puget Sound

  10. half_pint said:

    Well it has always been obvious to mr that mountain bike wheels are smaller
    in diameter and thicker in the rim.

    Exhibit A: the wheels on my road-going bike. ETRTO 406 and about 35mm
    deep.

    Keep digging...

    Guy
    --
    May contain traces of irony. Contents liable to settle after posting.
    http://www.chapmancentral.co.uk

    88% of helmet statistics are made up, 65% of them at CHS, Puget Sound

  11. "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I somehow doubt that, even though he looks like a nit of a "nutter"
    from his photograph, he describes wheel building as an art which
    needs to be mastered.
    It is clear from the length of his article on wheel building
    that it is an art which needs to be mastered, (a bit like pot throwing
    perhaps), and this is from the starting point of an undamaged
    rim.
    Trying to 'true' a buckled wheel is probably nigh on
    impossible. Apart from anything else you will never get
    all the spokes to the same tension.
    Note he doesnot even attempt to describe how to remove
    a buckle from a wheel. Removing the rim completely
    and hammering it straight is probably the only option.

    Note the giveaway here : 'probably'. Ie doesn't actually know.

    Some of us here have experience in truing buckled wheels. We know that for
    example getting all the spokes to the same sension will not happen with an
    intrinsically bent rim, but this doesn't preclude the building of a true
    wheel.

    clive

  12. "Clive George" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I somehow doubt that, even though he looks like a nit of a "nutter"
    from his photograph, he describes wheel building as an art which
    needs to be mastered.
    It is clear from the length of his article on wheel building
    that it is an art which needs to be mastered, (a bit like pot throwing
    perhaps), and this is from the starting point of an undamaged
    rim.
    Trying to 'true' a buckled wheel is probably nigh on
    impossible. Apart from anything else you will never get
    all the spokes to the same tension.
    Note he doesnot even attempt to describe how to remove
    a buckle from a wheel. Removing the rim completely
    and hammering it straight is probably the only option.

    Note the giveaway here : 'probably'. Ie doesn't actually know.

    Some of us here have experience in truing buckled wheels. We know that for
    example getting all the spokes to the same sension will not happen with an
    intrinsically bent rim, but this doesn't preclude the building of a true
    wheel.

    It may be 'true' but it may also be prone to collapsing when you
    ride over a small bump due to 'unatural' stresses in the spokes.

    Quoted message said:


    clive

  13. "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:


    "Clive George" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I somehow doubt that, even though he looks like a nit of a "nutter"
    from his photograph, he describes wheel building as an art which
    needs to be mastered.
    It is clear from the length of his article on wheel building
    that it is an art which needs to be mastered, (a bit like pot throwing
    perhaps), and this is from the starting point of an undamaged
    rim.
    Trying to 'true' a buckled wheel is probably nigh on
    impossible. Apart from anything else you will never get
    all the spokes to the same tension.
    Note he doesnot even attempt to describe how to remove
    a buckle from a wheel. Removing the rim completely
    and hammering it straight is probably the only option.

    Note the giveaway here : 'probably'. Ie doesn't actually know.

    Some of us here have experience in truing buckled wheels. We know that


    for

    Quoted message said:
    Quoted message said:

    example getting all the spokes to the same sension will not happen with


    an

    Quoted message said:
    Quoted message said:

    intrinsically bent rim, but this doesn't preclude the building of a true
    wheel.

    It may be 'true' but it may also be prone to collapsing when you
    ride over a small bump due to 'unatural' stresses in the spokes.

    Experience says otherwise - experience you plainly haven't got. Yes, an
    uneven wheel isn't as strong. That isn't the same as not strong enough.

    clive

  14. [email hidden] (Dave Kahn) wrote in message news:<[email hidden]>...

    Quoted message said:

    I see what you mean. It's quite a short posting history

    Not if you ever browse uk.legal! (and perhaps elsewhere)

    James

  15. "half_pint" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:


    "Clive George" <[email hidden]> wrote in message

    Quoted message said:

    Some of us here have experience in truing buckled wheels. We know that


    for

    Quoted message said:
    Quoted message said:

    example getting all the spokes to the same sension will not happen with


    an

    Quoted message said:
    Quoted message said:

    intrinsically bent rim, but this doesn't preclude the building of a true
    wheel.

    It may be 'true' but it may also be prone to collapsing when you
    ride over a small bump due to 'unatural' stresses in the spokes.

    No it won't. This because if a rim was not bent equal spoke tension would
    make it both concentric and central it to the hub.
    If a rim is bent it doesn't need spoke tension to pull it in the direction
    of the bend because it's already there using forces of its' own therefore it
    doesn't need help from spokes on that side to balance those on the other
    side. In short the spokes are balancing forces which will be those of the
    other spokes in a true rim and those of the (other spokes + rim) if the rim
    is buckled.
    Think see-saw: A perfectly balanced see-saw will stay level with an 80kg
    person at each end. If the see-saw is inherently out of balance by 10kg at
    one end then it will only need a 70kg person at that end to counterbalance
    an 80kg person at t'other.

    Pete

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