Pyrenean Wolf wrote:
rockdude wrote:
Maybe you have better information than me. With the information I have from his first attempt, I'm seeing a CdA in the low .190 range. This jives with his statement that his wattage was "roughly 360w" on his first attempt. Dan Bigham's analysis afterward put him at .190 also. Recently I saw a windtunnel screen shot of a graph that had the CdA in the .190 range. If the conditions are similar to his first attempt, roughly 400w are going to be needed to break the record.
PM figure from first attempt was 358w average.
Dan Bigham personally, with similar height and weight compared to Alex, also with UCI constraint, was 0.168 two years ago. Do you really think Alex was 0.19 in 2015 ?
Bradley Wiggins was 0.187 during his attempt in 2015, and he his much taller.
0.19 is a figure I can easily reach on track (same size, same weight as Alex) with very standard equipment (no disk wheels), no boundary layer management, and no wind tunnel optimisation. Be sure Alex is better than that. He is better than that on a road TT bike, while changing position regularly, ...
Also seen the 0.19, but he was not in the HR aero position at this time....
But yes, to beat the record at sea level, he need around 400w. His usual FTP. So, no margin left...
Hopefully he will have good legs and low air pressure.
I sort of figure that any of the current top TT riders, or at least the ones without Gianna/WvA power output, are likely to have a CdA right around 0.17. There is just so much knowledge and technology available.
I can’t wait to see his equipment choices. Maybe. We should have betting pool.
I am going Hope/Lotus, Tempor and NoPinz clothing, Bont shoes with Speedplays, maybe a WattShop cockpit. MucOff chain.