calculo wrote:
no serious track fan coud consider a 6-laner as a serious track !!!
when was the last time a 200m or above WR set on anything other than a 8-laner ???
when was last time a 100m WR set on any other than 8-laner ???
or on tracks that do not have the preferred configuration
is this a joke ???
it has to be 116 / 84
it makes coe's firenze run immediately illegal as no 8-lanes !!!
The poster you responded to was perfectly correct and you are wrong again. Coe's run did not have to be on a more recently accepted "Standard Track" to be a legal WR. It was ratified at the time and you have still to offer any evidence of note from a 3rd party that the track wasn't perfectly satisfactory.
What part of the IAAF handbook do you not understand? It's quite clearly explained in laymen's terms in their Technical Manual of 2008 (updated 2013): -
2.2 Facilities for Track Events
Although there are a number of different layouts for the 400m oval track, it is IAAF’s objective to create uniform criteria, not only with a view to improving the performance parameters necessary for equal opportunities for all athletes and for the suitability for competition but also to simplify the principles of construction, surveying and certification of facilities. Experience has shown that the most suitable 400m oval tracks are constructed with bend radii of between 35m and 38m, with an optimum of 36.50m. IAAF recommends that all future tracks are constructed to the latter specification and this will be referred to as the “400m Standard Trackâ€.
This means that the IAAF have been in the process of establishing as many ‘Standard’ track configurations, as of when this was written, as new ones are built, to make it more suitable for all athletes. It does not state that those without a radii bend of 36.5m are illegal!
2.2.1.1 Layout of the 400m Standard Track
“The 400m Standard Track has the advantages of a simple construction, straight and curved sections of almost equal length and uniform bends which are most suitable to the running rhythm of athletes.â€
That means ALL athletes, including those who run 800m.
“All lanes have a width of 1.22m ± 0.01m. The 400m Standard Track has 8, 6 or occasionally 4 lanes but the last is not used for international running competition.â€
That means that a 6 lane track can be used for international competition.
“Further the outside lane could infringe the World Record rule that states the record should be made on a track, the radius of the outside lane of which shall not exceed 50m.â€
So, as long as the outside lane, be it lane 6 or 8, has a bend radius of less than 50m, then it is eligible for a World Record.
2.2.1.8 Other Layouts for the 400m Oval Track
“Radii other than between 35.00m and 38.00m should not be used for tracks for international competition, except for double bend tracks where the dimensions of which ensures an infield size adequate for rugby. In this case, the minimum radius must not be less than 24.00m.â€
Table 1.2.3a in the IAAF Manual shows that the radius of a double bend track, which is LEGAL for international competition, can range from 24 to 48m. It also means the straights can be 98m long.
There have been many world records set on 6 lane tracks, and there is nothing in any document published by the IAAF that states times on 6 lane tracks are not acceptable.
"Running tracks can have a variable number of lanes (typically from four to nine) and, in accordance with IAFF requirements (International Association of Athletics Federations), each lane is 1.22m wide."
Number of lanes are irrelevant and a total red herring. The only prerequisite is that it is a 400m track and the lanes are 1.22m wide.
Likewise, no IAAF rules state that tracks have to have 'standard' 84m long straights and 116m curves for record purposes.
Moreover, scientific testing on tracks with longer straights and thus tighter bends, shows it is actually a disadvantage to athletes and slows them down.
Even if the old Oslo track was of a different configuration to the current "standard" IAAF ones, that does not make them illegal nor faster. There were many tracks of different configurations being used in the last century, and any records set on them that were ratified by the IAAF made them legal.
With regards to the old Oslo track and others, with longer straights and shorter curves, being faster than the now preferred ‘Standard’ 84/116 configuration, a research paper published in 2004 by Vanessa Alday and Michael Frantz, entitled, “The Effects of Wind and Altitude in the 400m Sprint with Various IAAF Track Geometriesâ€, actually shows the opposite to be true. It states: -
“We investigate the effects that wind and altitude have on the 400m sprint when run on various IAAF track geometries, with the work based on the senior project written by Vanessa and supervised by Michael. We validate Quinn‟s ordinary differential equations model using data from the 1999 World Athletics Championships. The model is based on Newton‟s Law for the energy balance of a runner, and Maple is used to solve the model‟s equations numerically. We confirm some non-intuitive results about…. performances on both an equal quadrant track and a track from the ancient Greek games. Comparing the tracks provides information about the effects on performances on different standard tracks.â€
"Although the IAAF standard track is the norm for track dimensions, the IAAF accepts other tracks. One type of track is the equal quadrant track, which is a 400 meter track with 100 meter bends and 100 meters along each straightaway, measured along lane 1."
“We choose the equal quadrant track (to test) because before the IAAF standard track became so popular, the equal quadrant track was preferred. However, today THE STANDARD TRACK is by far the most widely used design for a number of reasons, including A WIDER TURNING RADIUS that favors runners and ENHANCES PERFORMANCES, ….â€
When comparing times for equal quadrant and standard tracks in windless conditions over 400m, “The final TIME in the EQUAL QUADRANT track is 0.06 seconds SLOWER than the IAAF standard track simulation, due to the SMALLER RADII on the bends. This causes the runners to spend more time on the ground than in the air, which increases their time. An equal quadrant track has longer straights than the IAAF standard track, which gives the runners on an equal quadrant track an advantage to be able to run faster on the straights. However, THIS DOES NOT OUTWEIGH THE DISADVANTAGE THAT THEY HAVE ON THE BENDS.â€
MICHAEL FRANTZ PHD - Professor of Mathematics and Chair of the Department of Mathematics, Physics, and Computer Science, University of La Verne, California.
So that would assume that Coe's run on the tighter bends of Oslo would have made his 800m performance at least 0.12 secs faster on a current standard configuration athletics track. And that isn't taking into consideration the improvements in surfaces since the 1970's.
So you are totally wrong in claiming it made times faster. It would have been the exact opposite, if indeed it even did have longer straights and shorter bends than the 'current standard' configuration.