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Please explain...

Discussion in 'General Motorcycling Discussion' at netrider.net.au started by Maetrik, Oct 8, 2011.

  1. Ok so this picture is on my wall and it just doesn't look right everytime i look at it.

    2ugc768.

    How is he not lowsiding and completely losing the back end, i just cant see how he can stay on the bike at such an extreme lean angle. Im guessing its only possible at a very high speed and the force from his velocity is pushing his weight onto the bike then onto the tyres therefore keeping the bike stuck to the ground.



    I just can't fathom how he does it, dragging a knee is one thing, dragging an elbow is just plain insane.

    I understand they have superior tyres etc but that doesn't over rule simple physics ie: he should be on his arse....
     
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  2. Dragging the elbow is extreme, I'll admit, but it's by no means new, a French rider back in the 80s and 90s, whose name escapes me, used to do it all the time...

    Also, in that pic, the wheels of the bike are on the track and the elbows are dragging on the ripple strip, which is slightly raised

    Under ANY circumstances, anyway, you'll not see me doing that on the way up Macquarie Pass :LOL:
     
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  3. Oh dont get me wrong, im not trying to say Stoner is a freak and is the only rider who can do this, i just happened to have a great pic of him doing it. It still blows my mind looking at the lean angle he is pulling....

    I've never dragged a knee, to the riders who are skilled enough here to do so, is the photo above an example of insanity or just extreme riding, because to me its just plain nuts.
     
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  4. Velocity has a place to a point.
    Speed increases the bikes own righting motion though parts like the wheels, brakes and motor.
    He can do those insane lean angles because he knows if he back off pressure on pulling the bike down, it will spring up.
    And he is pulling because he is so far inside the bike, His head is past the outer edge of the bar.
    I notice he still has his right foot flat and forward though. From the look of the front wheel he is just getting back on the throttle.
    It's too far into the corner to be getting countersteer from turning in.
    Also look at the contact patch of his tyres.
    You don't lose rubber on the road by leaning. You lose grip asking your tyres to do two things at once.
     
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  5. It IS a great picture, pin-sharp, and a classic illustration of Casey's mastery of the Honda, among other things.
     
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  6. Photos like that illustrate why i love MotoGP, every round people will rant on how its boring but how can you watch a rider be it Stoner or Rossi in 10th position riding like that? Its pure madness that is so awesome to watch....the angle Stoner pulled on the hairpin after passing Lorenzo at Laguna Seca this year was beyond the picture above....i watch it and am just speechless.....they all must be at their ABSOLUTE limit.
     
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  7. They are

    Here's what it looks like when they get OVER the limit :LOL:

    Caparosi in the litter.
     
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  8. Is Motegi a notoriously technical track....alot of riders came unstuck the whole weekend....?
     
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  9. "How is he not lowsiding and completely losing the back end"

    Have you noticed the profile of the tyres????

    Compare Stoners' tyre profile to that of your road bike.

    Casey's tyres are designed to operate at up to 60 degree lean angles, and work together with specialist light weight rims and suspenders costing as much as some peoples homes.
    Road tyres generally let you down after about 40-45 degrees, and supersport road legal tyres in the low 50's.
     
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  10. Alright dude, not trying to debate how he does it im just in awe everytime i look at it....my old man thinks its Photoshopped lol.
     
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  11. Ok now I'm lost. I sometimes wonder if people's logic is photoshopped.



    oh i nearly forgot......lol
     
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  12. That's an amazing shot!!
     
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  14. heh heh, if the front wheel wasn't obviously turning you'd swear that that was a static posed shot!
     
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  15. & yet you titled the thread 'Please explain...' :-s

    FWIW, it looks as if the road in cambered into the ripple strip & the ripple strip rises up from the lowest point.

    Great photo, but I think the angles are a bit misleading
     
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  16. He doesn't follow motorsport so to see a photo like that he was stunned. I can understand it if you don't follow the sport, the picture is insane.
     
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  17. ...and if you do follow, it's still insane, but in a good way :D
     
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  18. I can understand it if you don't follow the sport as well, but I can't it understand if you do. Your whole thread's thrown me as far as logic goes.

    Superior tyres and simple physics says he shouldn't be on his arse. Achieving 60 degrees lean angle says he knows it too.

    The really interesting question for me is, not how they do it, but how far can they go? Aside from plonking more horsepower into a bike and then managing it so it doesn't spit them off, what is the ultimate speed they can achieve around a corner? and how close are they to achieving it now?

    The question is, is he at maximum lean angle that is possible on a racebike, or is there still more to come?

    I'll throw a curve ball in for shits'n'giggles too, I wonder why he has his rear brake covered.....hmmm
     
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  19. there's a body of opinion that 'trailing' the rear brake through a corner 'settles' the bike in the corner

    at least that's how I've hear it described

    I do the same thing at normal lean angles and much more pedestrian speeds, an old Aussie international road-racer told an up-and-coming race to do it and I was nearby and listening.....
     
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  20. Where he is and at that moment.
    I would be covering the rear for if the back wheel starts spinning up. Last thing I would want to do there is drop some throttle.
    I know on the Duc he had Traction control. And a good one. Stoners mechanics all say he turned most aids off for race day. Including the TC.
    Ha ha Old habits die hard I guess.
    And no that's not max lean. The camber and angle give it more depth.
    Some just want to get a knee down.
    For others it gets in the road when trying for their elbows down.
    All I know is it takes a big gulp of belief.
     
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