Ok back to the Gearing Chat; took the flatland race file from September and put the data into di2stats.com digital can be so cool...because what you recall and what you actually did don't always match up.
For the lap race
http://www.di2stats.com/rides/view/22148
raced it in 11-14 using 15-17 for easy recovery laps
View attachment 3881
For the horse shoe race
http://www.di2stats.com/rides/view/22149
I spent a lot of time in 15, 16, 17 as I learned how to go around the horse shoe with the constant accelerate / decelerate . By the end after I got clear of the traffic, I got over confident and let it rip a lot faster through the turns in 11-14 until I did the two wheel drift; and decided to just settle in on 14 until the finish.
View attachment 3882
This tells me I need an 11-15 continuous stack for a straight line race; and 11-17 if lots of corners but I pretty much never use 18t or higher during a flat race.
Now take the same rides for pluckbond and we get
http://www.di2stats.com/rides/view/22151
Straight line need a continuous 15-19t
View attachment 3883
Horse shoe was much more conservative
http://www.di2stats.com/rides/view/22152
Still pretty much 16-19t as the favored gears.
View attachment 3884
So with that analysis done, the 11-23T will be going back on the bikes for Sebring. FWIW went to college in Florida; road bikes; 8 speed era. We use to call our 11,12,13,14,15,16,17,18 cassettes "a corn cob" so I guess todays' cassette is a corn cob on a plate. Now I just need Flo to fix my wheel problem.....