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Thread: Motorcyclist speeds through speed bump - GIF

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    Supporting Member Altair's Avatar
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    Can anyone explain physics involved?

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    Supporting Member bob_3000's Avatar
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    Quote Originally Posted by Gadgeteer View Post
    Can anyone explain physics involved?
    Ya I can, fat guy ate sh!t and his own bike hit him...luckily it only hit him once.

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    Quote Originally Posted by Gadgeteer View Post
    Can anyone explain physics involved?
    It looks like there is a slight depression in the road at the edge of the speed bump; he didn't shift his weight towards the rear as he went over the hump, and it's really low res but it appears his wheel bent or turned a little in that depression which set him up for that endo.

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    Quote Originally Posted by bruce.desertrat View Post
    It looks like there is a slight depression in the road at the edge of the speed bump; he didn't shift his weight towards the rear as he went over the hump, and it's really low res but it appears his wheel bent or turned a little in that depression which set him up for that endo.
    looks much more like he was taken by surprise by the hump, when his front wheel hit it it went over no trouble but he applied the brakes, because by then only his front wheel was on the ground it locked up.....whoops, over the top.

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    Quote Originally Posted by old kodger View Post
    looks much more like he was taken by surprise by the hump, when his front wheel hit it it went over no trouble but he applied the brakes, because by then only his front wheel was on the ground it locked up.....whoops, over the top.
    I think you have it. Apparently, he should have slowed down, prior to hitting the bump, instead of after hitting it. But, it, also, looked like a speed dip and bump.

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    Supporting Member bob_3000's Avatar
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    Quote Originally Posted by bruce.desertrat View Post
    It looks like there is a slight depression in the road at the edge of the speed bump; he didn't shift his weight towards the rear as he went over the hump, and it's really low res but it appears his wheel bent or turned a little in that depression which set him up for that endo.
    Pretty sure that is exactly what I said.

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    Quote Originally Posted by bruce.desertrat View Post
    It looks like there is a slight depression in the road at the edge of the speed bump; he didn't shift his weight towards the rear as he went over the hump, and it's really low res but it appears his wheel bent or turned a little in that depression which set him up for that endo.
    Combined with the forks hitting their maximum compression travel hard enough to possibly deform and lock the tyre against the engine before twisting sideways and simply becoming a pivot.



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    And don't extend your arms/hands to catch yourself!! That way leads to broken wrists, hands, arms!! Tuck & roll!!!

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    If a road surface contour can result in tossing a rider into the air when going too fast, might just as well have a shooter posted nearby to dispatch speeders. This eventuality parallels placing new roundabouts at old intersections without providing surface warnings for unsuspecting cycle riders.
    Last edited by Gadgeteer; Jan 19, 2023 at 09:20 PM.

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