This week I did two 30 minute time trial sessions. Both on short loop courses, so wind and elevation kinda sorta averages out.
Tuesday, Cervelo P3 Alum,dura ace, training wheels: 23.2mph average
Thursday, Windsor Wellington (aluminum round tube road bike), Shimano Sora, training wheels, in the drops: 21.5mph average
So, according to this highly robust science, Cervelo speeds you up almost 2mph!
I don’t know… I think the Dura Ace made you faster, not the tubes.
I thought I saw a post on SlowTwitch.com that proved round tubes were faster ?
round tubes are faster!
damn
industry needs to go on rewind
im sure it was mostly my body position that made me faster =)
I don’t know… I think the Dura Ace made you faster, not the tubes.
I thought I saw a post on SlowTwitch.com that proved round tubes were faster ?
Personally, I have noticed and confirmed I am 1.5-2.5 mph faster on my TT bike. Not sure it has anything to do with it being a Cervelo. 
So Im not winning races because I am on 105?
Damn.
105 is hot stuff man
now sora…that may indeed be slowing my road bike down…lol
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Or perhaps the speed difference can be attributed to the placebo effect?
Try this next time:
a few days later repeat.
Then tell us how it was to ride blindfolded.
problem:
my taint is still gonna know if Im in the aeor position
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thats about what I find also. pretty impressive that you “proved” that aero bars are faster than drops
science is so awesome
except I nearly had a girl pass me while testing on my trusty but slow Windsor!
because I am a jackass I had to do a sprint on my road bike last year. The little yellow thingy said that I was pedaling pretty hard but people that did not seem very fast kept passing me…sucked
You should have used aero bars on the road bike for a fairer comparison.
I have done a certain local triathlon eight years in a row on either a Giant TCR (neutral post w aero bars), Quintana Roo Kilo, Cervelo P2K and Kestrel Talon (forward post position). The Kestrel has been the fastest. The other three bikes are all about the same.
Now how is that for science?
I’m certain that the difference was entirely created by the tire rolling resistance and had nothing to do with aerodynamics, position or any of that other meaningless stuff.
Your science is slightly worse than mine since the test sessions were so far apart, fitness could be very different.
=)
You should have used aero bars on the road bike for a fairer comparison.
I have done a certain local triathlon eight years in a row on either a Giant TCR (neutral post w aero bars), Quintana Roo Kilo, Cervelo P2K and Kestrel Talon (forward post position). The Kestrel has been the fastest. The other three bikes are all about the same.
Now how is that for science?
Sounds to me like you need to work on making your road bike more like your TT bike…sorta like how I did
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only problem there is you get way more street cred when you pass a P3C with a windsor wellington and shimano sora than a cervelo with jet 90s
Sounds to me like you need to work on making your road bike more like your TT bike…sorta like how I did
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This week I did two 30 minute time trial sessions. Both on short loop courses, so wind and elevation kinda sorta averages out.
Tuesday, Cervelo P3 Alum,dura ace, training wheels: 23.2mph average
Thursday, Windsor Wellington (aluminum round tube road bike), Shimano Sora, training wheels, in the drops: 21.5mph average
So, according to this highly robust science, Cervelo speeds you up almost 2mph!
Yeah, but a Specialized Transition would give you ~2.5 mph:
http://www.specialized.com/OA_MEDIA/pdf/road%20vs%20TT%20research%20FINAL.pdf
(See Table 4)
only problem there is you get way more street cred when you pass a P3C with a windsor wellington and shimano sora than a cervelo with jet 90s
You’re assuming you would be able to pass either…I’m not so sure
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The guy on the P3C is probably slowing down to spit all of the bugs out of his teeth.
It’s the body position that gives you the speed. On the P3 you will have a rotated position with your upper body more parallel to the ground. Also your arms are tucked in front of you. At 20mph+ these things make a huge difference. 2mph is not surprising at all – 10% faster…