hndog609,
I did my own math equation here...
Using Bolt's WR run, notice WR run so the best he has ever run...
He had a 40 meter time of 4.64
That equates to 43.74 yards
So he ran 43.74 yards in 4.64 seconds
I found his split for 30-40m, divided that into yards, and he ran 0.0786 seconds per yard in that stretch.
The difference of 43.74 yards, which is what he ran, and a 40 yard race, is 3.74 yards. So I multiplied 3.74 yards x 0.0786 which is how fast he ran each yard during that section.
You get a time of .2939, that's the "extra" time basically, that he ran from 40 yard-40m line.
So if you subtract .2939 from his finish time of 4.64 in 40 meters, you get, 4.346. So he ran a 4.346 forty, not subtracting reaction time.
Now, his reaction time was 0.146 in this race, so take off his reaction time and he ran a 4.2 forty yard dash.
The only thing this changes from post #66 is that your math came up with a 4.2 vs the 4.1 you cited. Here is the quote and link I cited in post #76.
Combine experimenting with 40-yard dash timing - CBSSports.com
You really need to read this and understand what the different timing means. Here's the part you simply must understand to correctly grasp that nuance.
However, according to coaches and scouts who discussed this with The Sports Xchange, the FAT times are expected to be .20 to .24 seconds slower than the relative times recorded using methods the Combine has gone with since 1990, and before.
You're clearly no dummy bTNo but you persistently miss what the above means. Football players running FAT times are looking at having .2 or more added to their times. That 4.64 for Bolt IS a FAT time so to make it square with a football time it's subtracted.
So automatically this discredits any thought of him running a sub 4 forty. Also, he had the wind at his back and was going off of blocks.
So once again I repeat, running a football forty, on grass, no blocks, he's a 4.3-4.4 guy.
Now this last part is messy but let's try to make some sense of it.
On his 9.58 if timed as a football 40 then he's damn sure near if not under 4.00. And once again the math YOU cite along with the timing experts discussing FAT time conversions absolutely supports that contention.
Sub 4.00 on turf (just for clarification the oft-cited 4.24 by CJ was NOT run on grass) without blocks. Nah. Faster than CJ's time? Once Bolt figured out how to start from the different stance I've yet to hear anyone make an arguement that sticks to say he couldn't.