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Jaybird180 last won the day on January 10

Jaybird180 had the most liked content!

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About Jaybird180

  • Rank
    Cornering Master
  • Birthday May 8

Profile Information

  • Gender
  • Location
    Maryland, USA
  • Interests
    Motorcycle riding, Aviation, Taekwondo...and some other stuff.

Previous Fields

  • Have you attended a California Superbike School school?

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  1. Helmet advice wanted

    Another example of what you said above about no device working 100% of the time. I believe as you do that it's best to put the odds in my favor when talking about safety. But it doesn't mean that I'm going to cease the activity because it's above most people's risk threshold- I'm instead going to invest in the best safety gear and training my budget allows and then do my best to "not do anything stupid".
  2. Rear Slides and Saves

  3. Helmet advice wanted

    I know a guy who refuses to wear a seatbelt because he believes that his friend who died in a car crash might have been saved had he been thrown from the car. He even discounts the fact that everyday people who drive above their ability or in conditions for which the laws of Physics is king have saved potential crashes just because they and the vehicle moved as a single unit and they miraculously were able to make the correct inputs to avert a collision with an immovable or unstoppable object.
  4. If this is authentic

    I see what appears to be crash protection on that bike. And what's the rig at the rear?
  5. Helmet advice wanted

    The AGV dealers I've visited didn't have a sufficient selection to allow me to get a good one for my noggin. I recently eschewed my HJC RPHA-11 (only product in recent memory I waiting until product launch to eagerly buy) in favor of a Shoei RF-1200. I'd been looking for just...the right....fit. I've been trying to avoid the whole Shoei/Arai thing (some people believe they are the only helmets worth putting your head into), but I guess they finally got me.
  6. Rear Slides and Saves

    Pickup is a conscious decided effort. The rider intends to lift the bike to vertical at a much earlier point in the turn than allowing a lazy vertical movement later when the bike is decidedly passed the exit.
  7. Rear Slides and Saves

    I'll check out Ch 10 again. Thanks for the catch about the pickup and the change in trajectory, however I'd always thought of it as a way to finish the corner with throttle but the rider ins't yet going down the straight. Or perhaps as a way to quickly arrest the circular trajectory and get the bike pointed straight. Perhaps I've got a misunderstanding about that area....?
  8. Rear Slides and Saves

    I'd like to discuss rear slides a moment. In all cases below, the rider is leaned over in a turn. For simplicity sake, let's say the rider is mid-corner, established in said right turn and the corner is flat, level and symmetrical. Let's also define the apex of the corner as the geometric center of the turn. Let's also say the rider's throttle control is standard. Bike on dry pavement the rear end slides, the rider is loose on the bars and allows the bike to attempt to self-correct. Which way do the bars turn? Bike on a compromised surface and the rear end slides, the rider is loose on the bars and allows the bike to attempt to self-correct. Do the bars turn? Can the rider in either scenario turn the bars to give a corrective action? Is the answer the same for both conditions 1 and 2? If the rider give the opposite input to the bars in a slide scenario will the rider's action aggravate the situation? Is the answer the same for both conditions 1 and 2? After the above scenario #1, let's assume the rider's throttle control isn't standard. In fact, the rider has a timing error with the increased roll-rate and initiates a pickup of the bike post-apex in attempt to alleviate some of the turning forces. Due to the timing error, the throttle comes on at the same time (or perhaps with a microsecond lead) as an aggressive pick-up steering input. The rear end begins to slide. Is the slide in the same direction as above? Because the bike is vertical (or nearly so) but still following a circular trajectory which direction does the front end turn for corrective action? Can aggressiveness of a pickup cause an upset of traction? (I once called this a quick "un-flick")
  9. Anyone know where Suzuka will be broadcast in the USA? How about Japanese Superbike Series? The Irish Series to include Isle of Man?
  10. Steer for the Rear - Ch13 of TOTWII

    I saw the braking action and thought he got real lucky...again.
  11. New to the forum

  12. Steer for the Rear - Ch13 of TOTWII

    On the clips of smooth riders, the throttle application is also very smooth. The R1 rider as well as the black dude rolled off the gas when the rear began to slide. The guy on the Duc rolled out & straightened the bike just before his near miss of the road sign. The guy on the naked bike (Aprilia maybe?) was on the rear brake on corner entry and it looked like the slide there was intentional. Too much throttle could cause excessive rear tire load.
  13. Steer for the Rear - Ch13 of TOTWII

    You bring up an interesting point. A rider COULD cause loss of rear traction by inadequate roll-on. Seems counterintuitive to the pedestrian.
  14. Steer for the Rear - Ch13 of TOTWII

    I don't know why the rear tires are sliding in that video but the common thing I see just before the slides is a movement in the riders head&body back to the centerline of the bike. I'm wondering what's going on with that R1 as everything shook including the fairing stay.
  15. Steer for the Rear - Ch13 of TOTWII

    The rider's position on a unicycle means that the rider must exert more force on the single tire whereas on a bicycle the outstretched rider can use both tires. Yes because the motorcycle is turning about the rear wheel's circumference Centripetal force. In the rain we cannot get the same level of friction from the road surface and therefore cannot generate the same load safely. I'll give this some thought and come back to this one if you don't mind as I believe that bicycles don't quite behave the same as motorcycles due to the bicycle having similar tires on front and rear....Okay I've thought about it- It's centripetal force Lean ange is cause. See #2 Excessive acceleration. Controllable by modulating the acceleration until Balance Point (BP) is reached, afterwards it's subject to the laws of gravity if BP is exceeded Gravity and Engine power is forcing the rear wheel into the ground, until a certain angle as determined by swingarm angle and wheelie angle, which might constitute the Balance Point