TT Bikes: Felt vs. Cervelo
#1
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TT Bikes: Felt vs. Cervelo
Mainly the lower end:
S22 vs. P2SL/P1
B-16 vs. P2C
I can't try the felt before buying, so I'll compare geometry charts w/ the actual fit of the Cervelo.
I can get a slightly better deal on the Felt than the Cervelo.
Weight doesn't really matter to me, aerodynamics/price do.
This is mainly for shorter TT's, It'll be my first and probably only TT bike.
Thanks for any thoughts.
B.
S22 vs. P2SL/P1
B-16 vs. P2C
I can't try the felt before buying, so I'll compare geometry charts w/ the actual fit of the Cervelo.
I can get a slightly better deal on the Felt than the Cervelo.
Weight doesn't really matter to me, aerodynamics/price do.
This is mainly for shorter TT's, It'll be my first and probably only TT bike.
Thanks for any thoughts.
B.
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Are there any wind tunnel tests for the Felt?
My point is simply that you know what you're getting with the cervelo unless data exists on the felt.
Just my $.02
My point is simply that you know what you're getting with the cervelo unless data exists on the felt.
Just my $.02
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Brain,
Look at the P3 aluminum. Very good tunnel numbers, and if you're doing shorter TT's the better ride quality of the carbon bikes won't be worth the trade off in aero effeciency. P3's near the top at zero yaw, and a lot of the frames that are close fall away when you move the yaw from zero.
Look at the P3 aluminum. Very good tunnel numbers, and if you're doing shorter TT's the better ride quality of the carbon bikes won't be worth the trade off in aero effeciency. P3's near the top at zero yaw, and a lot of the frames that are close fall away when you move the yaw from zero.
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They both support arguably some of the best TT pros. I'd go with the one that fits your budget.
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Originality doesn't mean much to me. Speed does.
I've been looking at aluminum P3's, but people don't like to let those go for less than a carbon P2, and although it may be faster, used aluminum is a tough choice over new carbon.
Thanks for the advice.
I've been looking at aluminum P3's, but people don't like to let those go for less than a carbon P2, and although it may be faster, used aluminum is a tough choice over new carbon.
Thanks for the advice.
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Mainly the lower end:
S22 vs. P2SL/P1
B-16 vs. P2C
I can't try the felt before buying, so I'll compare geometry charts w/ the actual fit of the Cervelo.
I can get a slightly better deal on the Felt than the Cervelo.
Weight doesn't really matter to me, aerodynamics/price do.
This is mainly for shorter TT's, It'll be my first and probably only TT bike.
Thanks for any thoughts.
B.
S22 vs. P2SL/P1
B-16 vs. P2C
I can't try the felt before buying, so I'll compare geometry charts w/ the actual fit of the Cervelo.
I can get a slightly better deal on the Felt than the Cervelo.
Weight doesn't really matter to me, aerodynamics/price do.
This is mainly for shorter TT's, It'll be my first and probably only TT bike.
Thanks for any thoughts.
B.
Hands down the best "bang for the buck" (aerodynamically speaking) out there.
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One would be foolish to think that felt/time/look/spec/giant/fuji/ridley/etc/etc don't all go to the tunnel and have test data on there frames. The question is if they do it before or after production, if they do it for ad photos or development. Wind tunnel test can be manipulated to show many different results and different frames/components to be faster than others. Cervelo likes to say they are flattered that in every published tunnel test the come in second to whomever paid for the test. I think there is some truth to that.
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+1, wind tunnels are the most abused devices to sell bikes and parts. Unless they compare bikes with the same mockup rider dummy, in multiple runs, across multiple days, comparisons are rather pointless. No one does this. Cervelo uses a mock up dummy, but it's still data provided by a company selling the bike (which still amazes me that people swallow up in droves, especially in forums).
It's very easy to skew tunnel data with the slightest position change from the rider. This is because in the total package, rider position has more of a real effect than any frame or wheels.
At this level, you need to pick a frame that will give you the optimal position, if you can't figure that, go for the best price and with what you like.
It's very easy to skew tunnel data with the slightest position change from the rider. This is because in the total package, rider position has more of a real effect than any frame or wheels.
At this level, you need to pick a frame that will give you the optimal position, if you can't figure that, go for the best price and with what you like.
#16
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+1, wind tunnels are the most abused devices to sell bikes and parts. Unless they compare bikes with the same mockup rider dummy, in multiple runs, across multiple days, comparisons are rather pointless. No one does this. Cervelo uses a mock up dummy, but it's still data provided by a company selling the bike (which still amazes me that people swallow up in droves, especially in forums).
#17
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Maybe because some of us are experienced at examining data with a critical eye and can differentiate between what is meaningful and what is not. For example given the lack of coupling between frame and rider, adding a rider only adds noise to the system and makes it harder to elucidate the difference between frames. As to repeating runs on different days, unless you believe the phase of the Moon or the gravitational pull of the Sun affects the results, I see no benefit to this.
Intuitively it seems to me that it would be smaller component of total drag when compared to the rider ot the wheels.
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Of course the frame is a smaller component of total drag than rider, as is the helmet, suit, wheels and everything else but drag is drag and if it can be reduced to net the rider the same time on say 45w less then it becomes a big component.
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I guess my thinking is that we are talking small deltas between small numbers. Just the frame alone that is.
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The P2c is one of the top aero frames (wind tunnel data) out there except for the P3/P4. If you can find one at a deal the P3 SL (alum) is just a tad less aero but way heavier than the P2c.
I had the same issue trying to find a "cheap" P3 SL where the seller wanted 800-1000 for the frame. By the time I built it up the cost was only a few hundered less than a P2c. I went with the P2c
I had the same issue trying to find a "cheap" P3 SL where the seller wanted 800-1000 for the frame. By the time I built it up the cost was only a few hundered less than a P2c. I went with the P2c