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2008-10-25 5:05 PM

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Subject: Carbon...worth the price?

I'm looking at buying my first tri bike and just came back from the store and had a few questions.  Is a carbon bike worth the extra money?  I know it's supposed to be a softer ride, but is it really that much softer?  I'm torn between the QR Kilo (wanted the seduza, but had none in my size) and the Cervelo P2C.  QR Kilo is $1400, P2C is $2500.  Kilo has the dura-ace components vs ultegra for the P2C.  Are there other advantages I'm missing from the P2C, seems like the biggest thing is that is carbon whereas the Kilo is aluminum.  Let me know your thoughts.  Thanks.



2008-10-25 5:30 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?
It seems like everyone is buying carbon, however I just picked up a new Specialized Transition Expert, the last aluminum model, and I love it.

I'm not an expert, but I hear that carbon shatters if involved in an accident, and that there could be small issues that cannot be seen by the human eye, cracks etc.

I went for alum for overall longevity, and I'm happy, but two of my buds just ordered new carbon and couldn't be swayed.

Good luck,

Tom
2008-10-25 5:49 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?

The feel of carbon vs aluminum may be preference. I know a bunch of folks who LOVE their aluminum Cervelos, but I also admit that I've yet to hear of anyone who didn't appreciate their light and smoother carbon ride.

 

You'll definitely pay a big-time premium for the carbon frame. Then again, you'll also be paying a big-time premium for Dura-Ace vs ultegra as well. I haven't ridden aluminum road bikes enough to compare to my new P2C, but as a mtn-biker with lots of aluminum and steel experience, the carbon on the road feels a lot more like steel to me versus the definitely more rigid aluminum feel. Weirdly though, I do recall feeling "really fast" on that aluminum mtn bike on roads - my Cervelo, despite its alleged stiffness, feels surprisingly like soft steel, to the point I wonder if I'm still going as fast as I would on an aluminum bike! 

2008-10-25 6:26 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?
after my wreck in august I had to look for a bike and was limited to what was in the shop (IM training waits for no shipment...). The kilo and seduza were my best fit options, I'd only had steel and aluminium before and really was sure I'd get aluminium again. Then I rode both bikes on sh i tty sub division suburban Detroit road. One ride and I bought carbon.
2008-10-25 7:40 PM
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Subject: RE: Carbon...worth the price?

You breath on aluminum and if it bends then you have to replace the frame.

I've never seen a carbon frame "shatter" in my 18 years of road riding.

You are paying for the mold and fabrication process with a carbon frame.  Each one costs about $50k to make (the mold that is) and with one mold needed per frame size the development costs are huge compared to other materials.

2008-10-25 7:55 PM
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Subject: RE: Carbon...worth the price?
Daremo - 2008-10-25 7:40 PM

I've never seen a carbon frame "shatter" in my 18 years of road riding.

 

 





(Mikes Bike wreck 026.jpg)



(Mikes Bike wreck 021.jpg)



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2008-10-25 8:02 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?

I posted those pix kinda tongue-in-cheek.  Yes, my carbon framer shattered.....but I was t-bone by a Cadilac.  Maybe the frame shattering like this absorbed some of the impact....kinda like my helmet that cracked aborbing most of the energy.

I like the carbon frame and replace it with the exact bike.

~Mike

2008-10-25 8:55 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?
Did it make a sound like an M-80?  I just read an article in Outside mag about Specialized and their MTB R&D and testing frames until they break sounding like an M-80.
2008-10-25 10:03 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?
When comparing the Kilo to the P2C you're comparing more then aluminum vs. carbon. You're comparing a good entry-level bike with one of the most aero bikes on the market. I'm not knocking the Kilo. It's a nice bike. But it's not in the same class as the P2C.

Be careful about those component specs. The 08 Kilo has DA shifters (so does every other tri bike with shimano components, including the P2C), and a DA6800 rear derailleur. The crankset is FSA Gossamer and the brakes are Tektro. The front der. is Ultegra 6600 So, it's really not a DA build. I think the cassette and chain are 105.

As far as carbon being a "softer ride", that's not a given. I can put you on a Kuota KOM, a carbon mono frame, that's bone jarring stiff. At the same time there are aluminum bikes that are very "plush" to ride, while still being stiff. The plushness vs. stiffness of a carbon frame is determined by the design, lay-up of the carbon, raw materials, manufacturing process (mono vs tube-to-tube vs lugged), and how much resin they squeeze out of the tubes.

If your budget restricts you to the ~$1,500 range I would look at the Kilo, P1 (old P2SL), and Felt S32. All very good bikes at that price point.

If your budget allows for a $2,500 bike, the P2C is a phenomenal bike at that price.

scott

PS: An aluminum bike is no more durable then a carbon bike. Aluminum bends and cracks rather easily, and a bent or cracked aluminum frame is worthless.
2008-10-26 4:46 AM
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Subject: RE: Carbon...worth the price?
"PS: An aluminum bike is no more durable then a carbon bike. Aluminum bends and cracks rather easily, and a bent or cracked aluminum frame is worthless."

Thanks, like I said, I'm no expert.

But I am very happy with my aluminum Specialized.

Tom
2008-10-26 6:50 AM
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Subject: RE: Carbon...worth the price?

That's not a shatter Mike, that's just some bad cracks/splits!

Now, I have seen the original Spynergy wheels truly shatter in a road race and there were literally thousands of flying carbon shards.  It was scary as hell since we were about 400 yards out from the finish sprint.



2008-10-26 8:08 PM
in reply to: #1766039

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Subject: RE: Carbon...worth the price?
run joe run - 2008-10-25 9:55 PM

Did it make a sound like an M-80?  I just read an article in Outside mag about Specialized and their MTB R&D and testing frames until they break sounding like an M-80.


-thread hijack -
I used to pole vault at a moderately competitive level and we used carbon-fiber poles. During 4 years I broke 2 different poles right in the middle of my tuck (max pole bend)..........although the stress loading is completely different, it sounded like a shotgun going off. It will wake you up....for sure.
- hijack over-
2008-10-27 9:09 AM
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Edited by AcesFull 2008-10-27 9:10 AM
2008-10-27 9:51 AM
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Subject: RE: Carbon...worth the price?
AcesFull - 2008-10-27 10:09 AM

I think carbon is worth it, but to a point.  I have an aluminum framed Felt, and don't see the value in upgrading to a carbon frame until I have an engine worthy of such a frame.  As to the shatter issue, any incident that will damage a carbon frame would prolly so bend an aluminum frame as well.

Yup... I'm in your boat Ace.  I've got an aluminum Trek and while I'd love to upgrade to a Cervelo or Felt carbon, I can't see spending the money on it until my engine is "up to par".  I actually have a set MPH goal in my head that if/when I reach that MPH average on my Trek, I will start looking for a new bike.

2008-10-27 10:44 AM
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Subject: RE: Carbon...worth the price?
yaqui - 2008-10-25 10:03 PM

When comparing the Kilo to the P2C you're comparing more then aluminum vs. carbon. You're comparing a good entry-level bike with one of the most aero bikes on the market. I'm not knocking the Kilo. It's a nice bike. But it's not in the same class as the P2C.

Be careful about those component specs. The 08 Kilo has DA shifters (so does every other tri bike with shimano components, including the P2C), and a DA6800 rear derailleur. The crankset is FSA Gossamer and the brakes are Tektro. The front der. is Ultegra 6600 So, it's really not a DA build. I think the cassette and chain are 105.

As far as carbon being a "softer ride", that's not a given. I can put you on a Kuota KOM, a carbon mono frame, that's bone jarring stiff. At the same time there are aluminum bikes that are very "plush" to ride, while still being stiff. The plushness vs. stiffness of a carbon frame is determined by the design, lay-up of the carbon, raw materials, manufacturing process (mono vs tube-to-tube vs lugged), and how much resin they squeeze out of the tubes.

If your budget restricts you to the ~$1,500 range I would look at the Kilo, P1 (old P2SL), and Felt S32. All very good bikes at that price point.

If your budget allows for a $2,500 bike, the P2C is a phenomenal bike at that price.

scott

PS: An aluminum bike is no more durable then a carbon bike. Aluminum bends and cracks rather easily, and a bent or cracked aluminum frame is worthless.


Great reply.

It really comes down to the quality standards to which the frame was built and the desired result. Nothing about carbon makes it inherently more compliant then aluminum. It is all in how it is laid up/processed. It can be built to be bone jarring stiff or built to be a wet noodle.

To the OP, $1000 is a big difference. If you were looking to only spend $1500 and could get a cheap carbon bike or a nice aluminum bike. I'd say get the aluminum. You'd probably get a better ride on the aluminum between those two bikes. More likely the P2C is going to ride better then the $1500 aluminum bike.
2008-10-27 11:14 AM
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Subject: RE: Carbon...worth the price?
IronTotters - 2008-10-25 6:05 PM

I'm looking at buying my first tri bike and just came back from the store and had a few questions.  Is a carbon bike worth the extra money?  I know it's supposed to be a softer ride, but is it really that much softer?  I'm torn between the QR Kilo (wanted the seduza, but had none in my size) and the Cervelo P2C.  QR Kilo is $1400, P2C is $2500.  Kilo has the dura-ace components vs ultegra for the P2C.  Are there other advantages I'm missing from the P2C, seems like the biggest thing is that is carbon whereas the Kilo is aluminum.  Let me know your thoughts.  Thanks.

I can't believe no one has asked yet.

What distance racing do you plan on using this bike for?  If it's sprint/Olympic...not going to matter big picture-wise.  Ironman...Go Carbon hands down.

Yes, there are other factors to consider, but the first of which should be what distance races will you be using it for.



2008-10-27 11:33 AM
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Subject: RE: Carbon...worth the price?
Marvarnett - 2008-10-27 12:14 PM I can't believe no one has asked yet.

What distance racing do you plan on using this bike for?  If it's sprint/Olympic...not going to matter big picture-wise.  Ironman...Go Carbon hands down.

Because really Dan, it doesn't matter.  The material does not make the bike, the designer and fabricator make it.  You can have a stiff or a whippy aluminum, you can have a stiff or whippy carbon.  It is all in how the manufacturer makes the frame.

The real advantage for carbon is that you can do just about anything you want with it for design.  So getting a really aero, lightweight and stiff frame with some compliance in the vertical dimension is entirely possible while with aluminum you may have to sacrifice one of those things to get the other.

2008-10-27 11:38 AM
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2008-10-27 11:59 AM
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Subject: RE: Carbon...worth the price?

My observations with my new carbon bike:

I haven't seen much, if any, speed increase from my aluminum frame compaired to my new carbon bike.  HOWEVER, I have noticed that the carbon dampens a lot of the road noise/vibration that I used to feel with my old bike.

I may not finish a long ride any faster, but I sure feel less "beat up" on the carbon bike...

Just my 0.02.

2008-10-27 12:18 PM
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Subject: RE: Carbon...worth the price?

PennState - 2008-10-27 12:38 PM I personally feel that a big part of this discussion revolves around marketing... Is a $5,000 bike better than a $2,500 bike?

Yes, there is a huge difference.  Is there a difference between a $4,500 bike from one manufacturer and a $5,000 from another??  Generally, no, but when you are comparing the two it is all about fit and feel.  The quality, materials and components are all going to be similar (carbon, Dura Ace or Red, high end wheels).

Etc.I ride an entry level aluminum bike and with.the exception of Scott I probably have ridden more miles than most on this site (4,000 this year).

While that's all fine and dandy, it is really not relevant as to the difference in materials.  Your "entry level" bike is still the same frame that Specialized used to use on their more expensive models (other than the S-Works model) that has specific design components to absorb road shock (Zerts).  And I know people who ride less than you but put a heck of a lot more "abuse" on their bike.  It is not the mileage, it is the way those miles are put on.



Edited by Daremo 2008-10-27 12:20 PM
2008-10-27 1:07 PM
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2008-10-27 1:33 PM
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Subject: RE: Carbon...worth the price?

PennState - 2008-10-27 2:07 PM In fact the 'ride a lot' and fast bike splits *may* even be connected...

I doubt anyone would argue with that!

Of course, riding "smart" has as much to do with racing fast as riding lots.  I don't think anyone would say I've put up stellar mileage since getting back on the bike and I'm not exactly slow.

The overall resounding theme is that carbon is worth it if you are willing to spend the cash.  It gives you more flexibility in frame design.  And you can get it crazy light if you want and still have a solid frame.

2008-10-27 2:12 PM
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Subject: RE: Carbon...worth the price?
I have a carbon bike (Kestrel KM40), and an aluminum bike (Specialized S-Works Transition). The kestrel design gives the bike an unequivocal smooth ride, that said, the transition ride is right up there with it. I've ridden both on century rides, and both were very comfortable (surprised that the aluminum didn't 'wear' me out like many have said). I basically use the transition at UCI time trials since the kestrel is not 'legal', but I can't think of a distance or condition where the carbon or aluminum decision would make me prefer one over the other.

2008-10-27 2:51 PM
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Subject: RE: Carbon...worth the price?
Based on the only empirical data I have:
2007 IMKY Fuji Aloha, AL frame:   07:20:59 | 112 miles | 15.24 mile/hr
2008 IMKY Felt B12, carbon frame:  06:48:11 | 112 miles | 16.46 mile/hr
I have to cast my vote for the carbon frame.  :-)
Certainly there are many, many factors and variables with maybe.....juussst maybe, the carbon frame helped me shave a little but off my IM time.
.
~Mike


Edited by Rogillio 2008-10-27 2:53 PM
2008-10-27 3:15 PM
in reply to: #1765845

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Subject: RE: Carbon...worth the price?

IMO if you are questioning an extra $1k then money is an issue.....   as expensive as triathlon is spend that money on traveling to a couple other races or use for entry fees.....  $525 a pop on IM series.....

There are a ton of cool races out there but they are not cheap especially if traveling.  Your money will be better spent on more race experiences than having a cool carbon bike.

Just my two cents, FWIW I ride aluminum, have done from sprints to IM and I survived.....

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