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spoke length?

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Cycling Equipment
Published
31 January 2008
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2 February 2008
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datakoll
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  1. 2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    So I have the average measurements from edge of spoke hub hole to
    inside rim at the rim eyelet.

    Using 6mm nipples, the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?

    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?

  2. datakoll said:

    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    So I have the average measurements from edge of spoke hub hole

    eh? you need the hub dimensions, then the rim dimensions, the spoke
    count, then the spoke crossing pattern. the hub spoke circle diameter
    should be to the center of the spoke hole. calculate from there.
    calculation options include doing the math yourself, letting damon
    rinard do it for you, or letting someone like d.t. do it for you.

    Quoted message said:

    to
    inside rim at the rim eyelet.

    use the published manufacturer erd.

    Quoted message said:


    Using 6mm nipples, the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?

    i prefer to the bottom of the spoke nipple screwdriver slot.

    Quoted message said:


    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?

    for 2.0mm spokes, stretch is negligible. the rest comes out in the wash
    when you use the rinard solution. but it's garbage in, garbage out.
    you need to make sure your input data is precise and correct.

  3. jim beam said:
    datakoll said:

    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    Quoted message said:

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    Quoted message said:

    So I have the average measurements from edge of spoke hub hole

    eh?  you need the hub dimensions, then the rim dimensions, the spoke
    count, then the spoke crossing pattern.  the hub spoke circle diameter
    should be to the center of the spoke hole.  calculate from there.
    calculation options include doing the math yourself, letting damon
    rinard do it for you, or letting someone like d.t. do it for you.

    Quoted message said:

    to
    inside rim at the rim eyelet.

    use the published manufacturer erd.

    Quoted message said:

    Using 6mm nipples,  the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?

    i prefer to the bottom of the spoke nipple screwdriver slot.

    Quoted message said:

    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?

    for 2.0mm spokes, stretch is negligible.  the rest comes out in the wash
    when you use the rinard solution.  but it's garbage in, garbage out.
    you need to make sure your input data is precise and correct.

    no, real life setup on the dishing beam is more accurate and reliable.
    The spokes are here, the wheel is real, why use math-or why use
    incorrect inputs into the equation.

    spoke math, in the current problem of too long mail order spokes,
    seems to give a math answer. The math answer may be correct but itsa
    not gonna build the wheel. The math Mall Oder spokes tighten down as
    the nipples seat onto the eyelets outside dim-ension.

    Great math and off to Puget Sound in the Spruce Goose.

    Prior attempts at MalOder spokes were fumbled by clac software. For an
    as yet unexplained reason, clac software insists on single wall rim
    diameters when the operator is typing double wall rim dimenesion into
    the computer?

    you prefer what to the bottom of the spoke slot? the end of the spoke
    when fully torqued down? Rinard is giving you that dimension? I don't
    believe that ans it sounds like something JB would start a parade on.
    Rocket Science spoke lengths. Sure, when you find a rocket scientist
    is a bike warehouse cutting Maul Odor spokes or a rocket science spoke
    measurement device. A 303mm in a batch of 36 will vary 1.5 either way.
    Then what? And don't say filum down.

    No way! no room for error, dents, bashes, or hole wear.

    and I don't know where Shimano hid standard dimensions.

    If you use the math, it's possible the math isn't giving you real life
    dimensions, but how would you know that? Rinard et al doesn't let on
    to it do they?

    My standard from scratch method became buy 8 spokes from an eyeball/
    tape measure with moderate experience and set up the wheel on dishing
    beam after the odor came in backwards, again.

  4. also, 5mm of thread mate works ok. No complaints. So why go for Rocket
    Science and a full thread engagment? when the potential for running
    out of room is at hand.

    More JB, torque the rim until you break it then back of a little.
    No point to it.

  5. datakoll said:
    jim beam said:
    datakoll said:

    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.
    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.
    So I have the average measurements from edge of spoke hub hole


    eh? �you need the hub dimensions, then the rim dimensions, the spoke
    count, then the spoke crossing pattern. �the hub spoke circle diameter
    should be to the center of the spoke hole. �calculate from there.
    calculation options include doing the math yourself, letting damon
    rinard do it for you, or letting someone like d.t. do it for you.

    Quoted message said:

    to
    inside rim at the rim eyelet.


    use the published manufacturer erd.

    Quoted message said:

    Using 6mm nipples, �the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?


    i prefer to the bottom of the spoke nipple screwdriver slot.

    Quoted message said:

    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?


    for 2.0mm spokes, stretch is negligible. �the rest comes out in the wash
    when you use the rinard solution. �but it's garbage in, garbage out.
    you need to make sure your input data is precise and correct.

    no, real life setup on the dishing beam is more accurate and reliable.

    but you've just proven that not to be true!

    Quoted message said:

    The spokes are here, the wheel is real, why use math-or why use
    incorrect inputs into the equation.

    because it gives you the correct result first time, every time. there
    is a reason the math exists. see above!

    Quoted message said:


    spoke math, in the current problem of too long mail order spokes,
    seems to give a math answer. The math answer may be correct but itsa
    not gonna build the wheel. <snip>

    then the math is not being used correctly. garbage in, garbage out.

  6. datakoll said:


    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    So I have the average measurements from edge of spoke hub hole to
    inside rim at the rim eyelet.

    Using 6mm nipples, the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?

    I think the math those of us who do the math do is based on making the
    spoke exactly the ERD length.

    The ERD is I think the distance to where the nipple sits in the rim.

    So based on that you don't want 1mm short or 2mm short but 0mm short.

    But a mm or two doesn't matter. I usually find the spokes come quite
    far up the nipples such that you can't do final tightening with a
    screwdriver from the top because the end of the spoke is in the way.

    But the LBS I bought spokes from only stocked even numbers of mm, and
    math predicted an odd number, so I got them officially 1mm too long to
    start with.

    Are nipples threaded all the way to the bottom anyway? You don't want
    the spokes too short.

    Quoted message said:

    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?

    Stretch and bend should be almost nothing. Hub hole wear, perhaps that
    could mean 1mm less in an extreme case? No need to worry about it. 1mm
    either way is no problem.

  7. jim beam said:

    ...then the math is not being used correctly. garbage in, garbage out.

    I'll happily trust the math itself, but sometimes it can be a real PITA to track down the real dimensions, particularly when there are conficting numbers available. A hub is no big deal to measure, but a rim is more awkward.
    If you have the stuff at hand I suppose it's reasonably doable, but if you want to place an order for both hub, rim and spokes simultaneously it can be a real nuisance.

  8. what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

  9. dabac said:
    jim beam said:

    ...then the math is not being used correctly. garbage in, garbage out.

    I'll happily trust the math itself, but sometimes it can be a real PITA
    to track down the real dimensions, particularly when there are
    conficting numbers available. A hub is no big deal to measure, but a rim
    is more awkward.
    If you have the stuff at hand I suppose it's reasonably doable, but if
    you want to place an order for both hub, rim and spokes simultaneously
    it can be a real nuisance.

    sure. but you can't use the datakoll method without having the stuff at
    hand either!

    [measuring rim erd is easy enough without special tools. use two
    spokes, two spoke nipples, and a tape measure. measure the spoke nipple
    dimensions to where you want, then thread them onto the spokes head
    down, i.e. opposite to the way you normally do. then have an assistant
    hold these two into opposite holes in the rim - so the spoke nipples are
    situated normally like they would be in a laced wheel, only the spokes
    aren't in the way - while you measure the distance between them. add to
    that measurement, a double quantity of the spoke nipple measurement you
    made earlier, and you have the number you need for calculation.]

  10. datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    dude, you're by far the wittiest guy on this group. but you're also the
    hardest to help when you don't want to listen.

    in this case, there is a real, simple, technical solution to the
    question you originally asked. take the prescribed measurements, crank
    the handle on the calculator, and the numbers you need drop out of the
    bottom. and unless your measurements are wrong, the answers you get
    from this method are guaranteed right.

  11. jim beam said:
    datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    dude, you're by far the wittiest guy on this group. but you're also the
    hardest to help when you don't want to listen.

    in this case, there is a real, simple, technical solution to the
    question you originally asked. take the prescribed measurements, crank
    the handle on the calculator, and the numbers you need drop out of the
    bottom. and unless your measurements are wrong, the answers you get
    from this method are guaranteed right.

    and if you post the input data, i'll post the output data.

  12. datakoll said:
    datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    E.R.D.
    Effective Rim Diameter. This is the rim diameter measured at the
    nipple seats in the spoke holes. The E.R.D. is needed for calculating
    the correct spoke length.
    See also the Spocalc Spoke Length Calculator on this
    site.                -sheldon brown's bicycle dictionary

    my experience, with other people's calculations sent MO, is a SPOKE
    END running to the nipple's seat or I assume correct if not-the
    outside eyelet, has the nipple run out threading to tighten further.
    Wha happens, and I did this once, is the wheel is set to go annnnnnd
    final torque levels are rrrrreachable, if reachable, only thru
    twisting nipples past final designed threading.

    There are drawings designed to eliminate this problem at the spoke
    clac setup point. Apparently the drawings are unclear at the MO.
    That's kinda what I'm asking: where is THAT point for the spoke end?

    dabac writes, 'a pain if the parts aren't on hand.' That's why the MO
    should run a competent spoke calc database. The 700c Sun Rhinos and
    Deore hubs ordered here aren't 54 303mm and 18 301 mm, the parts not
    Pre-war French Retro, the process not obscure.

    What happens is the parts are on hand but the spokes are too long. The
    spokes are in, the hub centered: so where do I measure to or deduct
    froj to get a 'perfetc' length to UPS and recut?

    In one MO shipment (names and profanity withheld because its Thursday)
    the [censored] at the quaint little nayborhood shop sent single wall
    spokes for a double wall 700 rim. REASON? I didn't have a 700 rim caws
    the manufacturer didn't make the specified  rim. Typical of the mental
    challenged. Therefore, the 8 spoke-dishing beam method.

    to clarify the preceeding(?) if the spokes are tightened down now at
    the dishing beam, the bends stretch over the hub hole, measuring
    becomes difficult at the recutting machine. That's why a guesstimate
    based on experience not math theorizing on what's happening in Parsec
    2.

  13. datakoll said:
    datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    E.R.D.
    Effective Rim Diameter. This is the rim diameter measured at the
    nipple seats in the spoke holes. The E.R.D. is needed for calculating
    the correct spoke length.
    See also the Spocalc Spoke Length Calculator on this
    site.                -sheldon brown's bicycle dictionary

    my experience, with other people's calculations sent MO, is a SPOKE
    END running to the nipple's seat or I assume correct if not-the
    outside eyelet, has the nipple run out threading to tighten further.
    Wha happens, and I did this once, is the wheel is set to go annnnnnd
    final torque levels are rrrrreachable, if reachable, only thru
    twisting nipples past final designed threading.

    There are drawings designed to eliminate this problem at the spoke
    clac setup point. Apparently the drawings are unclear at the MO.
    That's kinda what I'm asking: where is THAT point for the spoke end?

    dabac writes, 'a pain if the parts aren't on hand.' That's why the MO
    should run a competent spoke calc database. The 700c Sun Rhinos and
    Deore hubs ordered here aren't 54 303mm and 18 301 mm, the parts not
    Pre-war French Retro, the process not obscure.

    What happens is the parts are on hand but the spokes are too long. The
    spokes are in, the hub centered: so where do I measure to or deduct
    froj to get a 'perfetc' length to UPS and recut?

    In one MO shipment (names and profanity withheld because its Thursday)
    the [censored] at the quaint little nayborhood shop sent single wall
    spokes for a double wall 700 rim. REASON? I didn't have a 700 rim caws
    the manufacturer didn't make the specified  rim. Typical of the mental
    challenged. Therefore, the 8 spoke-dishing beam method.

    What is the 8 spoke-dishing beam method?

    Throw your rim and hub dimensions in to a decent spoke length
    calculator (there are many on the internet), and get the right length
    and order some of those spokes. If you question one calculator, throw
    the numbers in to three or four others and see what you come up with.
    You have very common components, and the dimensions (ERD, flange
    height, etc.) are also available on the internet in many places.

    Unless you have a Phil spoke cutting/threading tool, trimming a
    wheel's worth of spokes (or half a wheel) does not make sense -- at
    least to me. With that said, I am sure that ten people will jump out
    of the woodwork and say that they do it on a daily basis with great
    success and without munging the threads. YMMV. I have built wheels
    with spokes that were slightly too long because I have 30 years of
    spokes around the house and sometimes just use what I have. If the
    spokes project out of the nipple by a mm or so after final tension, I
    grind them off with a Dremel tool or a file -- unless it is a rim with
    a socket, and the spoke ends are below the socket, then I do nothing.
    If you have more projection than that, then the nipples are bottoming
    out on the threads; the wheel is not getting up to maximum tension,
    and it is time to start over with the right length spokes. Another
    problem with two long spokes is that, even if trimmed, they may bottom
    out later if you have to tighten the wheel to account for a dent or
    other insult to the rim. You should just get the right length spoke
    to start with. -- Jay Beattie.

  14. Ben C? said:
    Quoted message said:

    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    Quoted message said:
    Quoted message said:

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    Quoted message said:
    Quoted message said:

    So I have the average measurements from edge of spoke hub hole to
    inside rim at the rim eyelet.

    Quoted message said:
    Quoted message said:

    Using 6mm nipples, the spokes should be cut to the measurement to
    the eyelet, 1mm short of the eyelet or 2 mm short of the eyelet?

    Quoted message said:

    I think the math those of us who do the math do is based on making
    the spoke exactly the ERD length.

    Quoted message said:

    The ERD is I think the distance to where the nipple sits in the rim.

    The ERD is the diameter to which the threaded ends of spokes are to
    reach, and that is the top of spoke nipples inserted in the rim. This
    can be assessed by measuring the outside rim diameter and subtracting
    twice the distance measured down to the spoke nipple head from this
    outer diameter... meaning Effective Rim Diameter for spoking.

    Quoted message said:

    So based on that you don't want 1mm short or 2mm short but 0mm short.

    Quoted message said:

    But a mm or two doesn't matter. I usually find the spokes come quite
    far up the nipples such that you can't do final tightening with a
    screwdriver from the top because the end of the spoke is in the way.

    I haven't found a method of using a screw driver for final tightening,
    or truing for that matter. A spoke nipple driver is handy to get
    started with all spoke equally engaged.

    Quoted message said:

    But the LBS I bought spokes from only stocked even numbers of mm,
    and math predicted an odd number, so I got them officially 1mm too
    long to start with.

    Quoted message said:

    Are nipples threaded all the way to the bottom anyway? You don't
    want the spokes too short.

    The small end of spoke nipples usually have about 3mm smooth bore
    before threads begin.

    Quoted message said:
    Quoted message said:

    What is common practice here for a measurement that will account
    for spoke stretch, taking up spoke bend, and hub hole wear?

    Quoted message said:

    Stretch and bend should be almost nothing. Hub hole wear, perhaps
    that could mean 1mm less in an extreme case? No need to worry about
    it. 1mm either way is no problem.

    Amen.

    Jobst Brandt

  15. datakoll said:

    2.0 Spokes for my MO Monodog 29er's wheels are MO too long, again.

    The wheel is laced on a dishing beam, hub centered, nipples seated but
    not tightened.

    So I have the average measurements from edge of spoke hub hole to
    inside rim at the rim eyelet.

    Using 6mm nipples, the spokes should be cut to the measurement to the
    eyelet, 1mm short of the eyelet or 2 mm short of the eyelet ?

    What is common practice here for a measurement that will account for
    spoke stretch, taking up spoke bend, and hub hole wear?

    I assume you either used a spoke chart or software? Someone either
    misread the chart or used an erroneous input with software.

    However, it isn't all that terrible. Now that you have a built or mostly
    built wheel, it should be straightforward to interpolate and correct. If
    your 292 are 6mm too long, ask for 276, etc. Shoot for the inside edge
    of the rim or to the nipple slot ( a difference of ~1mm)

    What are '6mm nipples'? Short are usually 12mm, the older long ones were
    mostly 16mm (wood rims 20mm) but the threaded portion varies little if
    at all:
    http://www.yellowjersey.org/photosfromthepast/NIPPLES.JPG

    Spokes do not stretch in any practical or measurable sense.
    --
    Andrew Muzi
    www.yellowjersey.org
    Open every day since 1 April, 1971

  16. On Thu, 31 Jan 2008 13:17:53 -0600, A Muzi <[email hidden]>

    Quoted message said:

    Spokes do not stretch in any practical or measurable sense.

    Dear Andrew,

    Spoke stretch is negligible, but many calculators actually include
    it--just google for "spoke stretch" and calculator:

    http://www.google.com/search?as_q=%22spoke+stretch%22+calculator&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&cr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images

    An example of a truly excessive calculator that lets you put in the
    desired tension, modulus of elasticity, thickness, and so on:

    http://www.machinehead-software.co.uk/bike/spokes/spoke_length_calculator.html

    Results are in tenths of a millimeter. It really ought to include a
    field for temperature, since the spokes must shrink a little in cold
    weather.

    ***

    Near the bottom of this calculator's page, the author mentions using
    Jobst's calculation for spoke stretch:
    http://www.appliedthought.com/danny/Spoke/SpokeCalculator.html

    ***

    Jobst's calculation for "Spoke Elongation" was corrected down from
    1.24 mm in the first and second edition (an oops involving 180 kg
    tension) to this smaller 1000 newton figure in the 3rd edition:

    3. SPOKE ELONGATION FROM TENSIONING
    dL= P / K Elongation
    K = 1.34e6 N/mm Spoke elasticity (from Eq. 2)
    P = 1000N Tension in spoke
    dL= 1000/1.34e6 = 746e-6 m = 0.75 mm

    ***

    Again, I agree that ~0.75 mm of spoke stretch is not worth worrying
    about, particularly when many calculators include it anyway.

    Cheers,

    Carl Fogel

  17. datakoll said:
    datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    E.R.D.
    Effective Rim Diameter. This is the rim diameter measured at the
    nipple seats in the spoke holes. The E.R.D. is needed for calculating
    the correct spoke length.
    See also the Spocalc Spoke Length Calculator on this
    site. -sheldon brown's bicycle dictionary

    my experience, with other people's calculations sent MO, is a SPOKE
    END running to the nipple's seat or I assume correct if not-the
    outside eyelet, has the nipple run out threading to tighten further.
    Wha happens, and I did this once, is the wheel is set to go annnnnnd
    final torque levels are rrrrreachable, if reachable, only thru
    twisting nipples past final designed threading.

    There are drawings designed to eliminate this problem at the spoke
    clac setup point. Apparently the drawings are unclear at the MO.
    That's kinda what I'm asking: where is THAT point for the spoke end?

    dabac writes, 'a pain if the parts aren't on hand.' That's why the MO
    should run a competent spoke calc database. The 700c Sun Rhinos and
    Deore hubs ordered here aren't 54 303mm and 18 301 mm, the parts not
    Pre-war French Retro, the process not obscure.

    What happens is the parts are on hand but the spokes are too long. The
    spokes are in, the hub centered: so where do I measure to or deduct
    froj to get a 'perfetc' length to UPS and recut?

    In one MO shipment (names and profanity withheld because its Thursday)
    the [censored] at the quaint little nayborhood shop sent single wall
    spokes for a double wall 700 rim. REASON? I didn't have a 700 rim caws
    the manufacturer didn't make the specified rim. Typical of the mental
    challenged. Therefore, the 8 spoke-dishing beam method.

    Without knowing which Deore rear hub you have, a Deore front 36h 3x on
    Rhino is 292mm, not 303mm. You're right, they were not even close.
    --
    Andrew Muzi
    www.yellowjersey.org
    Open every day since 1 April, 1971

  18. Quoted message said:

    On Thu, 31 Jan 2008 13:17:53 -0600, A Muzi <[email hidden]>

    Quoted message said:

    Spokes do not stretch in any practical or measurable sense.

    Dear Andrew,

    Spoke stretch is negligible, but many calculators actually include
    it--just google for "spoke stretch" and calculator:

    http://www.google.com/search?as_q=%22spoke+stretch%22+calculator&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&cr=&as_ft=i&as_filetype=&as_qdr=all&as_nlo=&as_nhi=&as_occt=any&as_dt=i&as_sitesearch=&as_rights=&safe=images

    An example of a truly excessive calculator that lets you put in the
    desired tension, modulus of elasticity, thickness, and so on:

    http://www.machinehead-software.co.uk/bike/spokes/spoke_length_calculator.html

    Results are in tenths of a millimeter. It really ought to include a
    field for temperature, since the spokes must shrink a little in cold
    weather.

    A very little. Values for steel are (from memory) about 8 millionths of an
    inch per inch per degree; so a 100 degree change in an 11 inch spoke would
    be on the order of a hundredth of an inch.

  19. Quoted message said:
    Quoted message said:
    datakoll said:

    what's proven is:
    the theoreticians aren't building wheels
    have poor memories
    can't answer the question

    Quoted message said:
    datakoll said:

    E.R.D.
    Effective Rim Diameter. This is the rim diameter measured at the
    nipple seats in the spoke holes. The E.R.D. is needed for calculating
    the correct spoke length.
    See also the Spocalc Spoke Length Calculator on this
    site. -sheldon brown's bicycle dictionary
    my experience, with other people's calculations sent MO, is a SPOKE
    END running to the nipple's seat or I assume correct if not-the
    outside eyelet, has the nipple run out threading to tighten further.
    Wha happens, and I did this once, is the wheel is set to go annnnnnd
    final torque levels are rrrrreachable, if reachable, only thru
    twisting nipples past final designed threading.
    There are drawings designed to eliminate this problem at the spoke
    clac setup point. Apparently the drawings are unclear at the MO.
    That's kinda what I'm asking: where is THAT point for the spoke end?
    dabac writes, 'a pain if the parts aren't on hand.' That's why the MO
    should run a competent spoke calc database. The 700c Sun Rhinos and
    Deore hubs ordered here aren't 54 303mm and 18 301 mm, the parts not
    Pre-war French Retro, the process not obscure.
    What happens is the parts are on hand but the spokes are too long. The
    spokes are in, the hub centered: so where do I measure to or deduct
    froj to get a 'perfetc' length to UPS and recut?
    In one MO shipment (names and profanity withheld because its Thursday)
    the [censored] at the quaint little nayborhood shop sent single wall
    spokes for a double wall 700 rim. REASON? I didn't have a 700 rim caws
    the manufacturer didn't make the specified rim. Typical of the mental
    challenged. Therefore, the 8 spoke-dishing beam method.

    datakoll said:

    to clarify the preceeding(?) if the spokes are tightened down now at
    the dishing beam, the bends stretch over the hub hole, measuring
    becomes difficult at the recutting machine. That's why a guesstimate
    based on experience not math theorizing on what's happening in Parsec
    2.

    Length is normally taken from the inside of the curve to the end.
    Machines which hold the spoke on the outside of the curve correct for
    that. Brands do vary but only in the under 0.5mm range.

    You implied, I think, that these spokes were cut just for you. Although
    I ♥ my Phil Wood spoke machine, if we had to cut a set of spokes for
    more than one wheel out of fifty, we'd have to raise our spoke price.
    It's terribly time consuming and hence economically inefficient. More
    likely, someone counted your spokes from cases of pre-cut 301 and 303.

    --
    Andrew Muzi
    www.yellowjersey.org
    Open every day since 1 April, 1971

  20. A Muzi said:


    You implied, I think, that these spokes were cut just for you. Although
    I ¢¾ my Phil Wood spoke machine, if we had to cut a set of spokes for
    more than one wheel out of fifty, we'd have to raise our spoke price.
    It's terribly time consuming and hence economically inefficient. More
    likely, someone counted your spokes from cases of pre-cut 301 and 303.

    Most of the spokes I use are unusual in length, so I have to mail
    order many of them. I use Danscomp.com since I discovered that
    despite being a BMX-only supplier, they use full-length Sapim blanks
    and cut all spokes to order. Even so, theirs are about the least
    expensive top-quality spokes I've found.

    I'm guessing that they use something besides a Phil spoke cutter,
    because I've never gotten a sticky thread or ringed (rather than
    threaded) spoke from them out of the hundreds I have ordered.

    Chalo

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