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Crankset.

Old 01-05-07, 09:49 AM
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Crankset.

What is the stiffest crankset available on the market?

In the hours of boredom I spend on my trainer I look down and see my Ultegra cranks moving about .5 inches (tip of the big ring) with every pedal stroke. My frame only accounts for a tiny bit of that, and when I spin the cranks (no force) it still isn't quite straight.

Is there a EFBe (or what have you) test for cranks?

Help The Cypress.
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Old 01-05-07, 09:53 AM
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https://www.bikesportmichigan.com/reviews/crank.shtml
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Old 01-05-07, 10:02 AM
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Are you sure it's not the bottom bracket flexing....I used Ultegra cranks before my FSA carbon ones, and they didn't seem to be too "noodly"
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Old 01-05-07, 10:13 AM
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Anything a bit more current and extensive?
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Old 01-05-07, 10:13 AM
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Originally Posted by GuitarWizard
Are you sure it's not the bottom bracket flexing....I used Ultegra cranks before my FSA carbon ones, and they didn't seem to be too "noodly"
It could be. I am looking to replace my drivetrain and most top-end cranksets come with BBs.
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Old 01-05-07, 10:21 AM
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I remember reading somewhere (cyclingnews.com maybe) about a crank test that had the newer Dura Ace cranks 2.5 times stiffer than the nearest competitor. It's one of the reasons they didn't incorporate carbon into the design. Couldn't make it stiff enough to suit LA. I haven't seen the new Campy stuff tested.

Man, some of the baddest sprinters in the world ride Dura Ace or Record. I can't imagine one of those wouldn't be stiff enough for you. And it most likely is the frame wiggling around. If they didn't flex, they couldn't stick in bumpy corners. Even if you could remove all the flex, you wouldn't want to, unless you ride on billiard tables....
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Old 01-05-07, 10:28 AM
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Originally Posted by BikeWise1
unless you ride on billiard tables....

What if I do...
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Old 01-05-07, 10:53 AM
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Dura-Ace
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Old 01-05-07, 11:20 AM
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give it Viagra

*it's Friday*
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Old 01-05-07, 11:26 AM
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Is it the crank arm or the chain rings that you are seeing move side to side? If its the rings then you've probably got a bent one which is being exagerated when you're really hammering on it.
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Old 01-05-07, 11:31 AM
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Originally Posted by cuda2k
Is it the crank arm or the chain rings that you are seeing move side to side? If its the rings then you've probably got a bent one which is being exagerated when you're really hammering on it.
I think it's a mixture of everything.

I can see the undulation where the BB almost meets the crank arm. -BB flex/bend

On the bottom stroke I can almost see the entire big chainring. -Chainring maybe.

When I really dig in I can flex everything to the point of rubbing the chain on the FD plates (both sides).

Dura-Ace could be the answer.
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Old 01-05-07, 11:42 AM
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It's none of the above. It's just what you have to live with when you have The Thighs of Cypress.







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Old 01-05-07, 11:48 AM
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chances are that it is not a bent chainring that he is seeing in this case. A ring that bent would probably not hold a chain w/out a pretty stubborn fight. I'm guessing that what you are actually seeing is the bike moving in the trainer, which is a pretty common occurance. I've got both a fluid trainer and a 1up and w/ both of these I can look down and see movement in the cranks. However on a Cannondale Caad 9 w/ full Dura-ace, I know that stiffness isnt the issue, moreover just an optical illusion.
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Old 01-05-07, 11:55 AM
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Originally Posted by Cypress
What if I do...
Photos please!
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Old 01-05-07, 12:38 PM
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Originally Posted by Second Mouse
It's none of the above. It's just what you have to live with when you have The Thighs of Cypress.

Touché.

I'll have to take a vid of this and youtube it. Post it around 7-ish after I get off of the trainer.
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Old 01-05-07, 12:38 PM
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I saw a test (maybe analytical cycling) where the DA 7800 edged out the FSA carbon pro elite ISIS as the most rigid tested.
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Old 01-05-07, 12:42 PM
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Half an inch? Is it made of cooked spaghetti?
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Old 01-05-07, 12:47 PM
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Originally Posted by idcruiserman
Half an inch? Is it made of cooked spaghetti?

Could be. When I replace it, I'll add marinara and stuff it down with cut up pieces of my old TCR to preserve their Chi inside my loins. Well, for at least 15 hours or so.
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