I’m looking to upgrade my frame from a Leader 720TT (alu, all round tubes minus the downtube) to either a Cervelo P2C or Cervelo P2SL (now known as the P1).
I’m curious to see if there is any hard drag data out there comparing these two frames, or on the P2SL in general. I know there was a thread comparing the P2K and the P3C a while back via an outdoor velodrome and a power meter. Through that thread was interesting, it was riddled with caveats, and it’s difficult to establish any hard comparisons.
For me:
$$ is an issue.
Comfort is NOT an issue.
Speed is THE issue.
The selling point for me will be how closely (or not) the two frames would perform.
Thanks for reading! I’d appreciate any input you might have.
I know there was a thread comparing the P2K and the P3C a while back via an outdoor velodrome and a power meter. that thread was interesting, it was riddled with caveats, and it’s difficult to establish any hard comparisons.
If you think that comparison was riddled with caveats and difficult to make conclusions from, well, good luck with what you do find.
I admit that I am fairly new to slowtwitch and I am not up to date in the latest wind tunnel comparisons. Hence why I started this thread.
No apology necessary (though, for future reference, it’s really not too wise to write stuff like, “But hey, I’m a PhD student. It’s my job to analyze data and design experiments.”)
Wind tunnels may be more precise than field tests (and, of course, they let you test at controlled yaw) but they still require some interpretation – and sometimes the interpretation is both demanding and subtle. And, as has recently been demonstrated in another thread, cross-tunnel comparisons of the same items ain’t a piece of cake. I’ll repeat what I wrote above: if you think that the field tests comparisons discussed on ST are riddled with caveats and difficult to make conclusions from, well, good luck with what you do find.
I know there was a thread comparing the P2K and the P3C a while back via an outdoor velodrome and a power meter. that thread was interesting, it was riddled with caveats, and it’s difficult to establish any hard comparisons.
If you think that comparison was riddled with caveats and difficult to make conclusions from, well, good luck with what you do find.
Actually, it would appear that Ryon was referring to this thread:
I know there was a thread comparing the P2K and the P3C a while back via an outdoor velodrome and a power meter. that thread was interesting, it was riddled with caveats, and it’s difficult to establish any hard comparisons.
If you think that comparison was riddled with caveats and difficult to make conclusions from, well, good luck with what you do find.
Actually, it would appear that Ryon was referring to this thread:
That’s thread that I saw! My main criticism would be the slightly different gear use, like the helmet and shoe covers, etc… Not everyone has a velodrome nearby, but it was pretty cool to see.
Like I said, I’m fairly new to slowtwitch, so I’m not really up to date on all of the independent testing that people have done here. Curious, has anyone looked at how the Equinox compares to the TTX or to one of Cervelo’s frames? I’ve been told that the Equinox has a very similar drag contribution as would be for the TTX. Depending on how much you like the wind tunnel testing, the TTX seems to stack up pretty well. So, it makes me wonder regarding the battle of the aluminum frames. Equinox vs. Alu P1 (p2K, P2SL)?
I think most will agree that the P2 is “faster” than an equally equipped P1. The question is: does the price difference between the P2 and the P1 justify in your mind the aero advantages. Also could the money you save buying the P1 be better spent elsewhere like a wheel cover and a deep front wheel and an aero helmet. What you lose in aero between the two frames you may end up recouping more in better accessories on the cheaper bike.
I think most will agree that the P2 is “faster” than an equally equipped P1. The question is: does the price difference between the P2 and the P1 justify in your mind the aero advantages. Also could the money you save buying the P1 be better spent elsewhere like a wheel cover and a deep front wheel and an aero helmet. What you lose in aero between the two frames you may end up recouping more in better accessories on the cheaper bike.
That’s very good advice. I probably should have mentioned in my original post that I have a rear disc (renn575) and an 88mm deep front wheel (easton knock-off). Or better yet, i should have posted a pic of my ride…
Granted, I’ll also be looking to get a more slippery aero cockpit as well. I’ve got about $1K to spend on improvements on my TT setup for next season. Which is why an aluminum Cervelo or perhaps an alu Equinox frame are fairly attractive to me.
you should be in your aerobars instead of sitting up. Until you fix that stick with your current frame.
I’d get the P2c just because I like fact that it has a down tube mounted water bottle mount and I think it looks nicer:) That said, I have a P3c and love it.
