Took my New TT Bike Cervelo P3X, 80mm DT Swiss front and rear, for it first “balls out” ride. Course is 38km around a lake, with 250m total elevation, Usually I start a second lap to get a 40km time. It is a course I have ridden many times on my old TT bike, Specialized Shiv, Walker Brothers 88mm front rear disc
Headlines: my second fastest circuit, only time I went faster was during the Triathlon last year, where I didn’t have to worry about traffic and there were no red lights
40km completed in under 1 hour, despite being held up briefly by 3 set of lights, and slow traffic through one town
4 PRs on different segments including 2nd overall on the 40km TT
Compared with my previous PB set in June, I was 67s quicker, but power was 2W higher
For the geeks, I loaded both rides, Shiv and Cervelo into Best Bike Split. Shiv had an estimated CDA of 0.2371, Cervelo had an estimated CDA of 0.1948 (this is the first time I have seen an estimated CDA below 2)
Conclusion: The Shiv is still a very quick bike, however, initial impression is that the Cervelo is around 1 minute faster on a 40km circuit, and probably 4-5 mins quicker on an Ironman
Those are really expensive minutes, but what you do not see is the improvements I feel climbing and the extra confidence I have on the descents, partly due to disc brakes, but also due to geometry / frame stiffness