Track turns exactly semicircle? http://www.letsrun.com/forum/flat_read.php?board=1&id=3950437&thread=3949069#3950437
Old track site: http://www.trackinfo.org/tracks.html
Lane 8 distance convo: http://www.letsrun.com/forum/flat_read.php?thread=250143
Dimensioning and Configuration A. Representative Track Configurations:
In the design portion of the project, four basic concepts can be followed:
B. Measure Line
The measure line is defined as a theoretical line from which the distance of a running track is determined. This line is located 20cm from the running side of the painted line for each lane. In the case of a raised curb, the theoretical line is located 30cm from the running side of the raised curb for lane one.
C. Allowable Radius Length
The radius to the measure line of lane one is recommended to be not less than 90’ or more than 130’. For a world record to be set, the radius of the outside lane should not exceed 50m (164.04’) except where the bend is formed with two different radii, in which case, the longer of the two arcs should not account for more than 60 degrees of the 180 degree turn. It is recommended that the radii be permanently marked with a fixed monument.
Some physics convo. Centrifugal, centripetal http://www.letsrun.com/forum/flat_read.php?board=1&id=814843&thread=814731#814843
Are all of the tracks I’ve measured 400m and single radius? Does single radius vs double radius matter for my computations? I think it might. I could do some demo diagrams. Broken-back /double bend