Hi guys.

Any thougths on this would be appreciated

Vastas.

It's really not the BB that holds the stiffness, that's a bike magazine myth. it's the downtube, seattube and chainstays that flex and twist. These super oversize BB junctions on todays frames main function is to save weight. You hardly have any lever force on the BB shell.

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Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti

thanks DMF.

Good info.

What current carbon bike do you think is the stiffest in it's entirety today ?


Vastus

What kind of peak wattage do you actually put out in a short sprint? And what is your weight?

_________________
Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti

my weight is 88kg.

i do not measure power output when i am riding. sorry

If the geometry fits you, and the price fits the bill, I'd reckon a Mario Cippolini bike could be among the stouter rides out there (if it's good enough for Super Mario, it's good enough for you). But there is more to a stiff ride than the frame tubes. You really need to look at wheels, cranks, shoes and bar/stem-combo too...

Otherwise look into getting a custom steel or aluminum frame (like Tsunami), that can be tuned to your stiffness requirements just by choice of material thickness.

_________________
Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti

Thanks DMF.

What bike do you ride?

Vastas

I ride a cheapish aluminum frame, built as a criterium racer, as my main roadbike. Nothing special, but I love the geo so I can't get myself to make the change for a 'better' frame

_________________
Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti

Velocity pride themselves of targeting stiffness before weight. That said their bikes aren't exactly heavy either.

Stiffest bike in it's entirety would have to be the Ridley Noah.

I believe both Tour and Velo gave the Cannondale Evo their highest score ever for stiffness.

Ramjm_2000, are you confusing stiffness with stiffness to weight ratio?

Isn't that stiffness for it's weight... I have a very hard time thinking it would be stiffer than some of the sturdier frames that are twice the weight and twice the amount of the same material?

_________________
Roadbike
Planet X Stealth w/ drop bars

Mountainbike
Van Nicholas Zion Ti

I am 6' 3" 220lbs and I ride a look 695 sr, it is super rigid and super light my bike weighs 13.6lbs

My bike is the stiffest.