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Thread: How hard can you corner a road bike?

  1. #21
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    Default Re: How hard can you corner a road bike?

    Bigger question is why would you want to find out?
    Better to stay with lean angles that make the corner- 1 nano past max lean angle and you are on the ground.

    Finding max lean angle is riskier than finding out how many licks it takes to get to the center of a tootsie pop.


    Quote Originally Posted by 11.4 View Post
    Ah, but nobody has actually answered the OP's question. How much can one lean and get away with (Photoshop not allowed)?
     

  2. #22
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    Default Re: How hard can you corner a road bike?

    There was a great video that someone posted either here or across the hall of the descent in a recent race, and the cornering was impressive. Does anyone recall that clip? If so, please post a link.
     

  3. #23
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    Default Re: How hard can you corner a road bike?

    Small chainring too.
    "Skinny tires are dangerous", Tim.

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  4. #24
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    Default Re: How hard can you corner a road bike?

    Tour Magazine in Germany does a wet grip test for a 8m radius corner. Depending on the tire, I think max speed can vary by 6km per hour for slip.
    http://www.conti-tyres.co.uk/conticy...eTest_2011.pdf

    There are too many variables to give you a number. The static friction of the contact patch will vary on temperature, weight of rider plus tire pressure will change size of contact patch etc etc etc....

    The page two in the PDF shows the contraption used to test friction and the poor rider dressed as a crash test dummy.
     

  5. #25
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by Tristan View Post
    Looks to me like he's half way though eating shit? His right hand is on the top of the hood, his left looks to be off the bars and about to touch the ground? Very hard to tell from the low-res of Instagram though, and it could be some sort of shadow.

    To me it looks like he's hit something which has dislodged his hand from the bars and he's halfway through the inevitable slump / crash.

    Looks like he's gonna pick up a quarter off the road with his left hand?
     

  6. #26
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by Shinomaster View Post
    Looks like he's gonna pick up a quarter off the road with his left hand?
    What, can everyone not do that while cornering hard?

  7. #27
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by Saab2000 View Post
    What's that seat?
    Looks like an Adamo

  8. #28
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    Default Re: How hard can you corner a road bike?

    every thing shows it is 100% faked
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  9. #29
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    Default Re: How hard can you corner a road bike?

    Between his "position" and that saddle my daily tolerance of the ridiculous and dumb has been maxed.
     

  10. #30
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    Default Re: How hard can you corner a road bike?

    I always thought this photo of Jobst Brandt showed a realistic/safe max lean angle:

    tiretest.jpg
     

  11. #31
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    Default Re: How hard can you corner a road bike?

    This is a screen cap so the quality sucks but here's Sagan diving for a corner
    saganlean.jpg
     

  12. #32
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by vertical_doug View Post
    Tour Magazine in Germany does a wet grip test for a 8m radius corner. Depending on the tire, I think max speed can vary by 6km per hour for slip.
    http://www.conti-tyres.co.uk/conticy...eTest_2011.pdf

    There are too many variables to give you a number. The static friction of the contact patch will vary on temperature, weight of rider plus tire pressure will change size of contact patch etc etc etc....

    The page two in the PDF shows the contraption used to test friction and the poor rider dressed as a crash test dummy.
    Crunching the numbers, the tires are capable of holding .9 to 1.1 lateral g's in the wet. Those are fairly ridiculous numbers. I'm not sure I believe them, but I'm very sure I don't want to take the time (and skin) to find out for myself.
     

  13. #33
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by nate2351 View Post
    This is a screen cap so the quality sucks but here's Sagan diving for a corner
    saganlean.jpg
    And look at that! His butt is on the saddle and his hands in the drops. They're all doing it that way...weird.
     

  14. #34
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by ThomasRZ View Post
    I always thought this photo of Jobst Brandt showed a realistic/safe max lean angle:

    tiretest.jpg
    You sure that's not Bill Walton? He's got more head tube than handlebar.
     

  15. #35
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by TRuss View Post
    You sure that's not Bill Walton? He's got more head tube than handlebar.
    Jobst is quite tall.

    About 45 degrees is it.

    Pretty much irrelevant to any actual bike riding though
     

  16. #36
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    Default Re: How hard can you corner a road bike?

    How hard can you corner?

    Usually harder than you think.
    Except when you think you can corner faster, that's when those bits of gravel and other stuff starts to magically materialise in front of your bike.
    Peter R. Hill

  17. #37
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    Default Re: How hard can you corner a road bike?

    You can lean pretty far but that photo is staged IMO. Left hand appears to be on the ground, holding him up at that angle. If you're leaning far in a left turn, your left hand needs to be pushing on the bar just like on a motorcycle (counter-steering).
     

  18. #38
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    Default Re: How hard can you corner a road bike?

    Also, at that lean angle you wouldn't be turning the pedals or you'd hit the ground with the inside pedal. Your outside foot would be pushing down hard. In the photo the crank is not at the bottom of the rotation but at about 4 o'clock. That's because he is stationary. You can see the wheel spokes because the tires are not turning. I call fake. This guy needs to watch some youtube videos to see how it's done. What an ass.
     

  19. #39
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    Default Re: How hard can you corner a road bike?

    The down hills around here can get me going over forty miles per hour. On the straights I hang tough and ride it out. When the curves come I scrub speed and grab brake though.
    Body parts start coming off in a spill at those speeds.
    I'll never wear those rubber knubs off of the side of my tires!
    I always liked this video of Cancellara descending that Red Kite Prayer keeps up on their main page.
    Pretty good lean angles, fast and smooth:
    Cancellara on the Drop | RKP
     

  20. #40
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    Default Re: How hard can you corner a road bike?

    Quote Originally Posted by TRuss View Post
    You sure that's not Bill Walton? He's got more head tube than handlebar.
    Yeah that's a silly amount of head tube, he needs some bigger wheels...
     

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