What current carbon bike has the stiffest BB?

Discuss light weight issues concerning road bikes & parts.
vastus
Posts: 6
Joined: Sun Aug 19, 2012 1:05 am

by vastus

Hi guys.

Any thougths on this would be appreciated

Vastas.

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DMF
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Joined: Sat Dec 06, 2008 10:14 am
Location: Sweden

by DMF

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.

by Weenie


vastus
Posts: 6
Joined: Sun Aug 19, 2012 1:05 am

by vastus

thanks DMF.

Good info.

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


Vastus

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DMF
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by DMF

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

vastus
Posts: 6
Joined: Sun Aug 19, 2012 1:05 am

by vastus

my weight is 88kg.

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

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DMF
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Location: Sweden

by DMF

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.

vastus
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Joined: Sun Aug 19, 2012 1:05 am

by vastus

Thanks DMF.

What bike do you ride?

Vastas

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DMF
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Location: Sweden

by DMF

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 :)

Phill P
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Location: Melbourne, Australia
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by Phill P

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

DartanianX
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Joined: Sun Nov 13, 2011 6:00 am

by DartanianX

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

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Ramjm_2000
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Location: US of A

by Ramjm_2000

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

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HammerTime2
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by HammerTime2

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

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DMF
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Location: Sweden

by DMF

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?

JSS
Posts: 72
Joined: Tue Oct 25, 2011 3:03 pm

by JSS

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

jsinclair
Posts: 397
Joined: Sat Aug 27, 2011 3:26 am
Location: Sydney, Australia

by jsinclair

My bike is the stiffest.

by Weenie


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