New TT Bike: Faster than old one?

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


Its NBS - new Bike Syndrome …



Love it.

Congratulations on your new purchase. Lovely Bike.

I think you do push yourself when you get a new bike to prove it is worth it, especially when it is an expensive upgrade. You don’t want to be seen to be going slow on such a steed.

Getting a new bike with disc brakes seems to be a must these days and it put me off considering a TT bike this year as there are so few of them with that option. Without disc brakes on some slopes near me in the wet, it was never really possible to stop without them and caused a few squeaky bum moments…

Good work 5 mins on an Ironman bike leg is not to be sniffed at if you are wanting to be in the mix for Kona. If you believe it is quicker then it is.

I am a few years behind the curve having just upgraded to a Shiv TT from a Transition.

There is definitely an element of NBS

I am certainly trying to justify the purchase, but at the end of the day it comes down to one too many wet triathlons, after each one I question my sanity riding full speed on TT bike with carbon rims.

Part of me was fearing that the Shiv would be faster, with a rear disc, and fast set of wheels, I am also fully dialed into riding the Shiv, so was slightly relieved that the P3X is at least as fast and probably a bit faster.

P3X is also first TT bike I have ridden where I could (almost) imagine not having a road bike… except I live in the Alps

That’s one very sweet bike! I can but dream.

I also think somehow new bikes feel more ‘solid’ and responsive than old ones. Although various LBS’s have told me I am making it up I am sure they deteriorate in some way. e.g. my 2012 Cannondale six felt bomber when I bought it, super solid through corners, stable fast breaking, quick to accelerate etc. Now, well, it just doesn’t.

Not sure about bikes, but carbon windsurf boards definitely get flexy. I am good friends with UKs top windsurfer and we were discussing this, when he gets his new kit at the start of each season, it feels super fast and responsive, for many years he thought that it was improvements in technology, until he happened use a brand new board which was a model from 2 seasons earlier having damaged his current board, and he found that a new ‘old shape’ board was faster than his old ‘new shape’ board

P3x, wow what a bike!!! I’ve just got a giant propel SL pro, all singing and dancing, I’m pretty certain it’s faster than my TT, lighter, more responsive. Knocked 20secs off my Richmond park lap with same average power :man_shrugging:

Yeah, I might have to dip into the piggy bank if I have another serious race.

Nice PB on 10km TT this morning 12m18s @ 48.8kph - Bike flys

It’s not about the bike!