hmmmm either the Big Green Book ? has totally changed the
conversions or GH has misquoted.
in my big Red Book ( a few years old)
t&f used 1.08 for 1500m to 1 mile
and 1.0058 for 1600 to 1 mile
so what is 1.0737 ????
1609.3/1600 = 1.0058125 hence the 1.0058 assumes NO slow down
factor
1609.3/1500 = 1.07287 , the 1.08 gives a slow down factor
the 1.0737 does not slow down as much????
Did T&F change its 1500m conversion ?
I'll by the 1.08, but I maintain there is also a
small slow down factor in the 1600 to mile conversion
a better value is
1.0064
So did BGB change conversions ? is total wrong?
so .....do the math
Pat Hoffman
Here is what GH said
---->
The problem is that there's not really a fixed conversion for any
distance;
the slower your final time the greater the difference. For the elite range
of
800/880s that used to be dealt with a single number was fine, but if you
want
to do a detailed calculation, you multiply the 880 time by 0.9942 (or to
go
the other way, divide by that number).
For 1600s to miles, the multiplier (at least as used in Big Green Book) is
1.0737. The range of values in BGB shows that a 3:38.7 for 1600 is a
3:40.0
mile (1.3 differential), and that a 7:46.8 (7:49.5 mile) is 2.7.
At the speed most people care about, 4:00 mile, a 1600 is 3:58.6 (1.4
differential). The 1.4 holds true for miles from about 3:54.5 to 4:11.0,
so
it's a very good every-day figure for men's/boy's races.
gh
------->
ps--you'll excuse the plug, but since this is a resource that many list
member
s would apparently be interested in, if you don't own a BGB, note that it
has
several pages of tables showing the equivalents of 1500/1600/mile (and
also
3000/3200/2M) races. In ohter words, 4:00 mile = 3:58.6 for 1600 = 3:42.2
for
1500.
Patrick E. Hoffman, Sc.D Anvil Informatics
http://www.cs.uml.edu/~phoffman Analysis and Visualization of Information
X-Country, Running Analysis 600 Suffolk St. Lowell, MA 01854
Best Web track calculator [EMAIL PROTECTED]
All time HS lists X-Radviz and other MDMV Visualizations
