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  • dj
    replied
    Originally posted by gh
    Originally posted by tandfman
    ... Of course, a two-section DMR final is hardly ideal, but I think it beats putting 18 teams on the track.
    You obviously were never a fan of the Islip Speedway's Figure 8 racing!
    Ought to run a revised devil-take-the-hindmost. Put nine teams on opposite sides of the track. Shoot the gun. Any team caught by the opposite pack gets pulled from the track.

    Leave a comment:


  • gh
    replied
    Originally posted by tandfman
    ... Of course, a two-section DMR final is hardly ideal, but I think it beats putting 18 teams on the track.
    You obviously were never a fan of the Islip Speedway's Figure 8 racing!

    Leave a comment:


  • Helen S
    replied
    I never felt that there were not that many realy teams capable of running that fast. To me the issue is the measurement and subsequent cone placement of the ND indoor track. I still think there needs to be some questions asked and answers given ('splainin'). (I really like that word- and especially the double apostrophes.) (With "Apostrophe" being my favorite Zappa album also.)

    Leave a comment:


  • tandfman
    replied
    18 teams have declared for this year's Men's DMR, all but three of them got their listed times this past weekend at Notre Dame. Fortunately, the DMR is the last event on the program Friday evening, so if they have to run two sections, it won't mess up anything other than dinner plans. Of course, a two-section DMR final is hardly ideal, but I think it beats putting 18 teams on the track.

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  • Walt Murphy
    replied
    Originally posted by gh
    Originally posted by Bruce Kritzler
    That's about 20 teams with auto's. Probably means two sections at ncaa. The total number of athletes in the meet is capped, so the dmr is contributing about 80. This does mean that the individual events will have smaller fields than usual. The usual size of dmr and 4x4 is about 10-12 teams.
    Declarations now up; basically, men getting 14 athletes per individual event, women getting 17.

    There should be some kind of safety valve for when too many people get auto qualifiers, or whatever reason. Allow something more than normal OK, but not everybody. So not only do we get severely depleted individual events, there's also a completely unwieldy DM. Dumb.
    Here are the number of teams that have competed in the DMR since 1994, the year it was added back to the indoor meet as a final-only event.

    1994--10
    1995--10
    1996--10
    1997--10
    1998--10
    1999--11
    2000--12
    2001--12
    2002--12
    2003--12
    2004--13
    2005--10
    2006--12
    2007--11
    2008--11

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  • 26mi235
    replied
    Originally posted by tandfman
    Originally posted by 26mi235
    I did not watch the entire video closely, but I do not remember seeing anyone stepping on the inside line.
    Whether or not anyone actually steps on the line is irrelevant. Wherever the cones are placed, the athletes will run a certain distance from them in order to avoid tripping on them. I believe that distance will be a constant for each runner, and will not vary depending on where the line is. And so the runners will run closer to the line (and thus a shorter total distance) if the cones are placed entirely inside of the line, rather than covering the line.
    Some people said that they saw them stepping on the line - doing so on the curve might be a lane violation (in the absence of the comes being in the right place).

    As for the shortened distance, the calculation I made seems to indicate that the savings does not account for the fast times (0.4 seconds for the DMR, 0.16 for the mile, 0.08 for the 800).

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  • gh
    replied
    Originally posted by Bruce Kritzler
    That's about 20 teams with auto's. Probably means two sections at ncaa. The total number of athletes in the meet is capped, so the dmr is contributing about 80. This does mean that the individual events will have smaller fields than usual. The usual size of dmr and 4x4 is about 10-12 teams.
    Declarations now up; basically, men getting 14 athletes per individual event, women getting 17.

    There should be some kind of safety valve for when too many people get auto qualifiers, or whatever reason. Allow something more than normal OK, but not everybody. So not only do we get severely depleted individual events, there's also a completely unwieldy DM. Dumb.

    Leave a comment:


  • tandfman
    replied
    Originally posted by 26mi235
    I did not watch the entire video closely, but I do not remember seeing anyone stepping on the inside line.
    Whether or not anyone actually steps on the line is irrelevant. Wherever the cones are placed, the athletes will run a certain distance from them in order to avoid tripping on them. I believe that distance will be a constant for each runner, and will not vary depending on where the line is. And so the runners will run closer to the line (and thus a shorter total distance) if the cones are placed entirely inside of the line, rather than covering the line.

    Leave a comment:


  • 26mi235
    replied
    Originally posted by Helen S
    Will we be seeing more info on the ND DMR situation this week?
    I think some valid issues have been raised here regarding track measurement (curb or no) and cone placement (on or inside the line). That, combined with the analysis from the Let's Run post, bring up questions which can easily be answered. But if the answers show fault with both afore mentioned issues, ND has some 'splainin to do and the NCAA has a real tough situation to deal with.
    There cannot be two problems with the set up. If the lane lines have been set for a curb (or for the cones in place of a curb), then the issue is if they cones were really placed inside the line rather on the outer edge of the line. If this is the case, the cones were set 5cm too far in.

    The discussion on LetsRun seems to be centered on the vast number of fast times. Taking the 5cm as an error and noting that the standard lane is bout 108 cm and yields a 6m full-lap stagger, I get that there is a 1.5% factor for the distance per full lap and a 4.6% factor from the 2cm mistake. multiplying these I get a 0.00069 factor. Multiply this times the 9:30 of the DMR (570 seconds), yields a 0.39 seconds. Thus, the timing is not substantially affected by the cone issue and would not have changed the number of auto qualifiers. There still is an issue that ND needs to clean up and/or explain (e.g., I think that there was a move to a 320m track and it is possible that Lane One is set to be correct without a curb).

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  • Helen S
    replied
    Will we be seeing more info on the ND DMR situation this week?
    I think some valid issues have been raised here regarding track measurement (curb or no) and cone placement (on or inside the line). That, combined with the analysis from the Let's Run post, bring up questions which can easily be answered. But if the answers show fault with both afore mentioned issues, ND has some 'splainin to do and the NCAA has a real tough situation to deal with.

    Leave a comment:


  • 26mi235
    replied
    If the track arrangement is correct with cones placed at the lines (and I think that this is legitimate), then at most, the cones are place 5cm too far inside. That is, this part makes no sense to me:

    "This is because lane one is measured 20cm out from the line when there is no curb. Putting the cones on the inside edge of the line (another 5cm) is not only the incorrect placement when a curb is temporarily removed, but actually has the effect of permitting another 5cm of encroachment on the inside edge.

    (you do not make both corrections, just one - 10cm no curb, or 5 cm, cones, serving as curb, were 5cm too far inside. There error is at most in the latter. This is one-third the 'correction' suggested above.

    This is because the cones for the Washington race were at most 2 inches further in than those at ND and it was hard to tell on the video there because of the orange color makes it a bit hard to see. At both venues, the cones are quite tall (not the little ones used for the break lines (e.g., 1-turn break).

    I did not watch the entire video closely, but I do not remember seeing anyone stepping on the inside line.

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  • Bruce Kritzler
    replied
    Shouldn't we expect more dmr's to qualify this year, when you look at mile, 3k, 5k times being way faster and more plentiful than previous years?

    Leave a comment:


  • polevaultpower
    replied
    I hate to copy anything from letsrun.com, and maybe this will get deleted, but I don't know if there is a way to link to an exact post there, only a page of a thread. But anyway, this is a really good summary of the situation.
    http://www.letsrun.com/forum/flat_read. ... 209&page=1


    Originally posted by Rman
    For those who want the math, an indoor track with a maximum recommended curve radius of 21 meters (I don’t know the measurements of the ND track) would be reduced to a radius 20.9m when accounting for the absence of the curb (i.e., the 10cm difference that is being discussed). The total length of the curved part of the track (both ends) is equal to pi times the diameter (or pi times twice the radius). So the total length of the curved part of the track goes from 3.14x2x21=131.88 meters with the curb (as in previous years) to 3.14x2x20.9=131.25m when not curbed (as in 2009). This is a difference of 0.63m per lap (which is about 8.6m over the length of the DMR). Now, if the ND track was originally designed and certified for a curb, but the curb was not used, this would require that the outward face of the cones coincide with the edge of the white line closest to the track (i.e., away from the infield). Even then, the track has a smaller radius by 10cm (or 0.63m per lap). In other words, if the track had been certified without a curb, the white line would have to be 10cm out from where the curb normally goes to be certified for the same length (320m). This is because lane one is measured 20cm out from the line when there is no curb. Putting the cones on the inside edge of the line (another 5cm) is not only the incorrect placement when a curb is temporarily removed, but actually has the effect of permitting another 5cm of encroachment on the inside edge. A 15cm reduction in the radius is almost a meter per lap (0.94), or about 13m for the DMR. A miler running at 4:06 pace is going to take about 2 seconds to cover this distance. (Actually, it looked like the cones were even inside the line, and not even touching it – now we’re talking 2.5 seconds? 3 seconds?) No matter who ran on the line or who didn’t, who ran on the outside of lane one for most of the race, or whatever, that happens in every race. The dynamics of those two DMR heats were no different than any other. But a smaller track is a smaller track, no matter what, and the whole pack winds up running a shorter race, on average. That’s why the regulations are precise – because it matters.

    You don’t even need to do the math. It makes no sense that 15 teams in 2 separate heats auto-qualified in the DMR. When has this ever happened before? Certainly never at this facility. It can’t be explained by a fast heat, a good day for a few teams, or anything else other than a change in the length of the race. And that is exactly what happened. The track was changed. The effect was across the board. Every team in both heats qualified in some fashion, even the crappy ones.

    The bottom line is that the ND track either was certified with curb or it was not. If it was, then there is no question that the cones were in the wrong place and the track ran shorter than in previous years. If the track was certified without a curb, and it was “corrected” this year, then ND ought to be equally embarrassed for running it long for all those years. If you look at the past 3 years, in the longer runs (mile, 3000, 5000, 4x400, and DMR), there were 16 autos and 24 provisionals (16/24) in 2009, 0/17 in 2008, and 4/29 in 2007. And even though there were 3 autos and 15 provisonals in the DMR in 2007, the average time for the autos and provs was a full 7 seconds slower in 2007 than in 2009. It was also a full 7 seconds slower in 2008. If the curb was pulled in 2009 and the markings were changed accordingly and recertified, which I doubt, then there is no problem – every 2009 auto-qualification is valid, and good luck to the DMR 15 teams in Texas.

    ND needs to provide the track certification for public scrutiny ASAP, before the field is selected for the championships. If there was a violation, then every coned race on that track should be thrown out. If there was not a violation this year, then they owe some apologies to the athletes that competed there all those years and missed auto-qualifying by tenths or hundredths of a second.
    [/quote]

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  • Bruce Kritzler
    replied
    If I was on the selection committee, I would be inclined to only take 10-12 dmr's. I don't really think a team finishing 10-15th in a race deserve to go to nationals.

    Also noticed at Iowa State 14 - 4x400's ran under 3:10! Florida State, with the Borlee twins running for the first time, ran 3:05.48.

    Leave a comment:


  • bhall
    replied
    Tweeted with Becca about this. What is the statistical likelihood that 60 people in the same event all peak on exactly the same day? I'd suggest it is somewhere around zero. I guess it could happen but all sorts of bells went off when I heard about the marks. Would be very interesting to see splits.

    Leave a comment:

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