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mtmansl

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Posts posted by mtmansl

  1. What Causes This?

    in Cornering and Techniques

    Posted

    You answer disguised as a question hits the nail on the head here. That is a very bumpy, fast section at Jennings, and one of the most important corners on the track. This turn (13), requires that you settle the bike early to set yourself up to get out of 14 and launch yourself down the front straight. Why does he feel the need to trailbrake here??? Turn 8 is another area where you see a lot of lowsides because it is slightly off camber and people rush up and carry large amounts of brake into the corner. Result; lowside... This is more of a rider issue than a setup issue.

     

    Matt

    Suspension certainly could be a problem here - lack of rebound damping and springs/compression too stiff - but there are things the rider could have done to improve the situation. It appears that he is really asking a lot of the front tire; getting on the throttle sooner would shift some weight rearward, turning the bike quicker would have allowed him to carry less lean angle, and relaxed arms would make a big difference on the load on the front tire.

     

    It seemed like the chatter was worst when he was leaned over, crossing a bumpy part of the track, and off the gas. It also appeared he went wide on his turn exits compared to the other bikes, which could be because of stiff arms and also made worse by lack of rebound damping.

     

    My husband watched this with me and also suggested possibly low tire pressure, with the tire getting overheated making the problem progressively worse. (But the FIRST thing he noticed was that the guy is really "on his front tire a lot")

     

    Here's a question : when he crashed, was he ON or OFF the gas? Could better throttle control have prevented that crash?

  4. Throttle And Lean Angle...increasing At The Same Time.

    in Cornering and Techniques

    Posted

    Cobie,

     

    I am a little confused with your premise here (could be misreading and I don't have the video). Are you saying that he crashed because he was increasing lean angle while applying throttle? Isn't the apex generally where you achieve max lean angle as it's the slowest point of the corner? In medium speed and higher speed corners I will often start applying maintenance throttle right after I turn in to settle the bike. Why would this lead to more crashes? I raced karts as a kid, then cars, switched to bikes while in the military and still often find myself thinking like I am on four wheels. Is this the case here?

     

    Matt

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