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2018 Cervelo P2 vs P3 - same frame, different groupsets?
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I hate making blanket posts like this that appear to be easily answered but research is what got me to this point. I understand with older p2 and p3 bikes the frame geometry was different. Mainly the headtube being lower on the p3. It looks like in the newer models, 2017 to current including the p5, cervelo frames share the same geometry. The p2 and p3 look to share the same frame completely. The only difference between the p2 and p3 is the fork and the components. So if I spend the extra 2800 on a p3 ultergra di2 vs the p2 is the components? I spend the extra $2800 on an $1800 groupset? And if i'm looking at the Cervelo site right that's basically how the line up is spec'd for 2018. p2 is only available in 105. p3 can be had ultegra or ultegra di2. Ive gotta be missing something.
Last edited by: smboudreaux: Oct 12, 17 11:02
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [smboudreaux] [ In reply to ]
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The P2 fork is about 1mm wider on each side compared to the P3. Other than that it’s the same frame

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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [smboudreaux] [ In reply to ]
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The frames are virtually identical. There's a very minor difference in the forks that you'd be hard pressed to see if the two were side by side. Basically, you're paying for a group set and a nicer cockpit.

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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [GreenPlease] [ In reply to ]
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Add to that the fact that the two forks are aerodynamically identical (as confirmed by Cervelo themselves).
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [ddsg] [ In reply to ]
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ddsg wrote:
Add to that the fact that the two forks are aerodynamically identical (as confirmed by Cervelo themselves).
\

I don't believe that is true. The S2 and S3 are similar, same frame, but different fork with the S2 fork being wider to make it cheaper to produce. They windtunnel tested the S2 vs S3 and there was no difference (or at least it was below the sensitivity of the wind tunnel).

The differences between the S2 vs S3 fork are similar to that of the P2 vs P3 fork. And the head tube and downtube area is similar, so maybe you can translate the S2 results to the P2, but maybe you can't. If I had to bet, if there is a difference, it is very small. I would buy the P2.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [smboudreaux] [ In reply to ]
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smboudreaux wrote:
I hate making blanket posts like this that appear to be easily answered but research is what got me to this point. I understand with older p2 and p3 bikes the frame geometry was different. Mainly the headtube being lower on the p3. It looks like in the newer models, 2017 to current including the p5, cervelo frames share the same geometry. The p2 and p3 look to share the same frame completely. The only difference between the p2 and p3 is the fork and the components. So if I spend the extra 2800 on a p3 ultergra di2 vs the p2 is the components? I spend the extra $2800 on an $1800 groupset? And if i'm looking at the Cervelo site right that's basically how the line up is spec'd for 2018. p2 is only available in 105. p3 can be had ultegra or ultegra di2. Ive gotta be missing something.


No more P2 Di2? That's a shame.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [chaparral] [ In reply to ]
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chaparral wrote:

I don't believe that is true. The S2 and S3 are similar, same frame, but different fork with the S2 fork being wider to make it cheaper to produce. They windtunnel tested the S2 vs S3 and there was no difference (or at least it was below the sensitivity of the wind tunnel).

The differences between the S2 vs S3 fork are similar to that of the P2 vs P3 fork. And the head tube and downtube area is similar, so maybe you can translate the S2 results to the P2, but maybe you can't. If I had to bet, if there is a difference, it is very small. I would buy the P2.

Damon Rinard who used to work for Cervelo posted on here that the differences in forks was about 1 second over 112 miles.

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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [chaparral] [ In reply to ]
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You're right, I had the S2/S3 confused with the P2/P3.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [gary p] [ In reply to ]
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gary p wrote:
smboudreaux wrote:
I hate making blanket posts like this that appear to be easily answered but research is what got me to this point. I understand with older p2 and p3 bikes the frame geometry was different. Mainly the headtube being lower on the p3. It looks like in the newer models, 2017 to current including the p5, cervelo frames share the same geometry. The p2 and p3 look to share the same frame completely. The only difference between the p2 and p3 is the fork and the components. So if I spend the extra 2800 on a p3 ultergra di2 vs the p2 is the components? I spend the extra $2800 on an $1800 groupset? And if i'm looking at the Cervelo site right that's basically how the line up is spec'd for 2018. p2 is only available in 105. p3 can be had ultegra or ultegra di2. Ive gotta be missing something.

No more P2 Di2? That's a shame.

Unless I'm looking at the cervelo site wrong, it's very structured now. P2 is strictly a 105 bike. I sorta understand. It's a smarter business model. I don't understand the 2800 and on for 1800 worth of parts
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [smboudreaux] [ In reply to ]
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you're looking at the site correctly. however, there are plenty of NOS P2 Di2's.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [casper3043] [ In reply to ]
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casper3043 wrote:
you're looking at the site correctly. however, there are plenty of NOS P2 Di2's.

What does NOD mean?
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [smboudreaux] [ In reply to ]
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NOS...New Old Stock, brand new leftovers from prior years.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [casper3043] [ In reply to ]
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10 4.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [BryanD] [ In reply to ]
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BryanD wrote:
chaparral wrote:


I don't believe that is true. The S2 and S3 are similar, same frame, but different fork with the S2 fork being wider to make it cheaper to produce. They windtunnel tested the S2 vs S3 and there was no difference (or at least it was below the sensitivity of the wind tunnel).

The differences between the S2 vs S3 fork are similar to that of the P2 vs P3 fork. And the head tube and downtube area is similar, so maybe you can translate the S2 results to the P2, but maybe you can't. If I had to bet, if there is a difference, it is very small. I would buy the P2.


Damon Rinard who used to work for Cervelo posted on here that the differences in forks was about 1 second over 112 miles.

1 second? whats the point of manufacturing to forks?

A milers kick does the trick
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [Im-a-miler] [ In reply to ]
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I believe the story went something like this....

They designed/tested a nice narrow and aero fork for the P3
Previously mentioned narrowness required more expensive high modulus carbon to make stiff enough/safe enough to produce
When it came to spec the P2 the cost of the fork was considered prohibitive
Designed a fork with a thicker crown cross section to make it less expensive to produce
Never took it to the tunnel and just shipped it

After the bikes had shipped they went to the tunnel and said...hey lets test this and they turned out to be within margin of error of each other.


Now the real question is why do they still produce the more expensive fork...unless it is lighter...but still.
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Re: 2018 Cervelo P2 vs P3 - same frame, different groupsets? [pyrahna] [ In reply to ]
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Cervelo has been making some interesting decisions on their bikes.

The P2/P3 frames, Magura hydraulic on the P5, P5-X beam bike instead of double diamond frame, etc.

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