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Why don't the pros use carbon cranksets?

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Why don't the pros use carbon cranksets?

Old 03-10-06, 12:25 AM
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Sincitycycler
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Is it because the big boys have their bikes already shaved down to the 15 lbs minimum?

Maybe they don't trust carbon the crank arm's strength or rigidity?
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Old 03-10-06, 12:41 AM
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Boonen doesn't ride carbon cranks...most of the rest do if they have FSA or Campy as a sponsor...please think before you post
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Old 03-10-06, 12:44 AM
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CSC uses FSA carbon cranks. I think Cofidis and Davitamon-Lotto do as well. I have not heard of carbon crank strength problems, but perhaps that would be a good reason.
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Old 03-10-06, 12:52 AM
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Originally Posted by pinky
Boonen doesn't ride carbon cranks...most of the rest do if they have FSA or Campy as a sponsor...please think before you post
Uh, I see alot of aluminum Dura-Ace out there, especially Disco...
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Old 03-10-06, 12:56 AM
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Originally Posted by DrWJODonnell
CSC uses FSA carbon cranks. I think Cofidis and Davitamon-Lotto do as well. I have not heard of carbon crank strength problems, but perhaps that would be a good reason.
I was thinking that too since pro riders are cranking out 450+ watts for hours at a time.

Long driving specialists in golf used to snap the ****e out of carbon golf shafts up until about 5 years ago. Those guys generate 150 mph clubhead speed, the average PGA pro averages about 110-115 mph!
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Old 03-10-06, 12:57 AM
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wasn't thomas voeckler using a stronglight carbon crank a couple of years back?
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Old 03-10-06, 12:58 AM
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Originally Posted by Sincitycycler
Uh, I see alot of aluminum Dura-Ace out there, especially Disco...
When Shimano is a sponsor, you don't use carbon cranksets.
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Old 03-10-06, 01:48 AM
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Originally Posted by Sincitycycler
I was thinking that too since pro riders are cranking out 450+ watts for hours at a time.

Long driving specialists in golf used to snap the ****e out of carbon golf shafts up until about 5 years ago. Those guys generate 150 mph clubhead speed, the average PGA pro averages about 110-115 mph!
Very few pro's can crank out 450 watts for an hour, let alone longer.

The reason Disco doesn't use carbon cranks, as stated, is that they're sponsored by Shimano, who does not currently have a carbon road crankset.

Many other teams, however, do use them. CSC, damn near all the Campy teams, etc.
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Old 03-10-06, 02:57 AM
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durace600 can do 400 watts - almost 450. I guess that is why he uses al cranks
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Old 03-10-06, 03:18 AM
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Originally Posted by Duke of Kent
Very few pro's can crank out 450 watts for an hour, let alone longer.

The reason Disco doesn't use carbon cranks, as stated, is that they're sponsored by Shimano, who does not currently have a carbon road crankset.

Many other teams, however, do use them. CSC, damn near all the Campy teams, etc.
crank out 450 watts for an hour
How many watts did Boardman, Indurain, etc crank out during their 1 hour records?
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Old 03-10-06, 04:17 AM
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Originally Posted by Sincitycycler
How many watts did Boardman, Indurain, etc crank out during their 1 hour records?
I suppose these are estimations because none of them had SRMs on their bikes

Boardman's 'athlete's hour' = 400w
Sosenka's 'athete's hour' = 430w
Boardman's 'best performance' hour = 445w
Indurain's 'best performance' hour = 477w
Rominger's 'best performance' hour = 468w
Merckx = 485w
Moser = 446w

https://www.bikecult.com/bikecultbook...cordsHour.html


Without looking too hard into it, it seems as though the Shimano teams use Dura-Ace, and most others use carbon
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Old 03-10-06, 07:01 AM
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Originally Posted by Rman
durace600 can do 400 watts - almost 450. I guess that is why he uses al cranks
R600DuraAce you mean

R600DuraAce, chasing down poseurs in a single pedal stroke......
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Old 03-10-06, 08:29 AM
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Originally Posted by Sincitycycler
Is it because the big boys have their bikes already shaved down to the 15 lbs minimum?

Maybe they don't trust carbon the crank arm's strength or rigidity?
Because there isn't any weight advantage - the carbon is just window dressing...

weight weenies says:

carbon: FSA K-Force 53/39 175mm with BB: 790g
aluminum: Shimano FC-7800 53/39 175mm with BB: 779g

same with stems - there's lots of carbon stems on the market. many weigh more than a thomson x2 in the same length. for every super light carbon stem there's a correspondingly light alloy stem (syntace comes to mind).
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Old 03-10-06, 08:56 AM
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Originally Posted by thewalrus
Because there isn't any weight advantage - the carbon is just window dressing...

weight weenies says:

carbon: FSA K-Force 53/39 175mm with BB: 790g
aluminum: Shimano FC-7800 53/39 175mm with BB: 779g

same with stems - there's lots of carbon stems on the market. many weigh more than a thomson x2 in the same length. for every super light carbon stem there's a correspondingly light alloy stem (syntace comes to mind).
Well, the FSA crankset, to be fair, isn't the lightest thing out there. The Stronglight Pulsion comes in well under 700 grams (probably 625 to 650) with the Twister BB.

You really can't draw too many conclusions about equipment/materials superiority by what the pro's use. They're paid to use certain products. That's the deciding factor about what goes on their bikes.
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Old 03-10-06, 09:14 AM
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Consider that some or them also take advantage of longer crank lengths available in aluminum.
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Old 03-10-06, 10:10 AM
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Originally Posted by ravenmore
You really can't draw too many conclusions about equipment/materials superiority by what the pro's use. They're paid to use certain products. That's the deciding factor about what goes on their bikes.
*ding, ding, ding*

Give that man a cigar.

The OPs original question is just about like asking, "Why doesn't Discovery ride on Colnagos?" The answer should be pretty self-explanatory: it's because they are sponsored by a certain company, and they ride what they are paid to ride.
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Old 03-10-06, 10:13 AM
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Originally Posted by Sincitycycler
Is it because the big boys have their bikes already shaved down to the 15 lbs minimum?

Maybe they don't trust carbon the crank arm's strength or rigidity?
Because they do not need to buy self esteem: They let their riding speak for itself.
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Old 03-10-06, 10:21 AM
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Boonen doesn't use carbon because Campy doesn't make cranks longer than 175 in carbon. Boonen uses 177.5 cranks and they are only offered in the Aluminum. Otherwise, I'm sure he'd use the carbon version
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Old 03-10-06, 11:08 AM
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Originally Posted by Sincitycycler
Is it because the big boys have their bikes already shaved down to the 15 lbs minimum?


Many pros aren't near the limit. Cyclingnews.com reviews pro bikes all of the time and many don't drop below 16 lbs. One guy that rides for Bianchi has a 17.3 lb bike.
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Old 03-10-06, 12:27 PM
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Originally Posted by Sincitycycler
Is it because the big boys have their bikes already shaved down to the 15 lbs minimum?

Maybe they don't trust carbon the crank arm's strength or rigidity?
1. Several pros ride carbon cranks
2. TDF bike weights are anywhere from 14.9-19 lbs.
 
Old 03-10-06, 12:28 PM
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i don't think pros really care about weight all that much. stiffness yes, weight, unless it's a pure climbing stage, not so much. most of the super ultralight stuff is made to be marketed to weight weenies willing to pay hundreds for a few less grams, not professional cyclists. it's true.
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Old 03-10-06, 12:43 PM
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Originally Posted by nitropowered
Boonen doesn't use carbon because Campy doesn't make cranks longer than 175 in carbon. Boonen uses 177.5 cranks and they are only offered in the Aluminum. Otherwise, I'm sure he'd use the carbon version
Ullrich uses 177.5s too. He must use Dura-Ace or Campy?
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Old 03-10-06, 12:44 PM
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He uses DA
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Old 03-10-06, 12:47 PM
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Originally Posted by thewalrus
Because there isn't any weight advantage - the carbon is just window dressing...

weight weenies says:

carbon: FSA K-Force 53/39 175mm with BB: 790g
aluminum: Shimano FC-7800 53/39 175mm with BB: 779g

same with stems - there's lots of carbon stems on the market. many weigh more than a thomson x2 in the same length. for every super light carbon stem there's a correspondingly light alloy stem (syntace comes to mind).
-----------------------------------------------------------
"carbon: FSA K-Force 53/39 175mm with BB: 790g
aluminum: Shimano FC-7800 53/39 175mm with BB: 779"
----------------------------------------------------------
Wow. Dura-Ace products are impressive as far as weight! How can aluminum be lighter than carbon?
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Old 03-10-06, 12:54 PM
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You are right none of the pro's use cf cranks.


https://www.cyclingnews.com/tech/2006..._wilier_sutton

https://www.cyclingnews.com/photos/20...roadcannondale

https://www.cyclingnews.com/photos/20.../look_KU3L0067

https://www.cyclingnews.com/tech/2006...berty_bh_davis

https://www.cyclingnews.com/tech/2006..._colnago_becke

https://www.cyclingnews.com/tech/2005...ich_csc_carbon
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