Timeline for Principle of physics used in the lift of skateboard
Current License: CC BY-SA 4.0
30 events
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| Jun 12, 2021 at 22:34 | comment | added | Tom | Btw there are videos on Youtube of people doing ollies without griptape on the board. | |
| Sep 3, 2020 at 11:03 | comment | added | Lloeki | Case in point, it’s entirely possible to Ollie out of manuals (a.k.a wheelies), or nose or tail slides, without popping but just keeping enough pressure to maintain front foot grip. | |
| Sep 3, 2020 at 8:40 | comment | added | Lloeki | Oh boy the front foot does a lot of work, and actually provides most of the lift. 1/4 through the upward motion, the front foot is dragging up and locking into the nose pocket. About halfway through the upward motion, the front foot is moving forward (and slightly down), which moves the tail end of the board and center of gravity most of the way up! The first 1/4 is mostly about having the nose come backwards and the deck tilt vertically towards the front foot: it's entirely possible to lift a board without having the tail hit the ground a.k.a pop, you're just limited by the board angle. | |
| Sep 2, 2020 at 1:21 | comment | added | dmedine | I don't think the front foot provides any significant lift. I have been skating my entire life and I know something about physics as well. Think about tricks like a kickflip or a pop-shove it. In these maneuvers, the front foot 'pushes' the tail up far less than in an ollie, but professional skateboarders can do these tricks and acheive near or equal height. The forces on the skateboard provided by the front foot might provide some upward momentum, but it is many orders of magnitude less than the tail popping and jumping actions. | |
| Aug 28, 2020 at 13:54 | comment | added | jblaine | The front foot friction and motion is a CRITICAL, not minor, component to an ollie. That motion is not just to maintain control of the board. There are loads of videos out there that explain how this trick works already. If you have any specific questions I may be able to help out with, please let me know. I've been ollie-ing for 32 years now. | |
| Aug 28, 2020 at 13:42 | comment | added | jblaine | @StianYttervik There is no spring action to the trucks themselves. Trucks are thick cast aluminum with steel or titanium axles. Anything you think you're seeing related to that in the video is perception/illusory. There most certainly is "loading" of the board. | |
| Aug 25, 2020 at 19:54 | comment | added | Stian | @EricDuminil If you look at the video, there is significant flex in the axles and the board. Having used one, a long ass time ago (the 90s), I can only offer anecdotal evidence. | |
| Aug 25, 2020 at 19:37 | comment | added | Eric Duminil | @UuDdLrLrSs slamming the ground with the tail is indeed not required. You can stop the seesaw motion just before, and the rest of the board will still be airborne, just not as high as with a powerful pop. I'll try to find a corresponding slow mo video. Note that it doesn't imply that the truck is acting as a spring. | |
| Aug 25, 2020 at 19:34 | comment | added | Eric Duminil | @NuclearWang no problem. I love the discussion, with every user bringing a different percentage of skater/physicist to the table. Your answer is good now BTW, I'm just not sure the question is settled. Further research is required :) | |
| Aug 25, 2020 at 19:32 | comment | added | Eric Duminil | @StianYttervik do you have any source for your claim that the truck is acting as a spring? It seems way too rigid for that, especially compared to the wooden deck. | |
| Aug 25, 2020 at 19:31 | comment | added | Nuclear Hoagie | @EricDuminil Thanks, I'm clearly not a skateboarder. | |
| Aug 25, 2020 at 19:30 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 24, 2020 at 18:59 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 24, 2020 at 18:49 | comment | added | StayOnTarget | @StianYttervik I thought so too. I didn't think that every ollie required striking the back part of the board on the ground. | |
| Aug 24, 2020 at 17:53 | comment | added | Todd Wilcox | @NuclearWang The front foot is definitely pulling the board upwards. Check out the videos linked in my comments on the original question. | |
| Aug 24, 2020 at 17:07 | comment | added | Nuclear Hoagie | @ToddWilcox As someone who has never ridden a skateboard, I'm not sure I follow. Surely the front foot isn't pulling the board upward? It looks like it barely makes contact until it hits the front kickflip. Friction on the front foot will be important to start the counter-rotation which pulls the back end of the board up, but I'm seeing very little contact in the GIF as the front foot slides up. | |
| Aug 24, 2020 at 16:58 | comment | added | J... |
...which is possible because the skateboarder has much more mass/inertia than the board And also because skateboard decks are covered in a super-high friction material that allows lateral grip with very small normal forces.
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| Aug 24, 2020 at 12:28 | comment | added | Stian | There is a significant participation from the spring action of the rear axle and board. You are also loading a spring with the first downward motion, which is released when you jump. | |
| Aug 24, 2020 at 12:06 | comment | added | Superfast Jellyfish | @ToddWilcox The front foot drag is only to maintain stability. The board can be lifted off the ground without the foot drag. | |
| S Aug 23, 2020 at 20:48 | history | suggested | Greg Martin | CC BY-SA 4.0 |
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| Aug 23, 2020 at 16:47 | review | Suggested edits | |||
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| Aug 23, 2020 at 1:19 | history | edited | Deschele Schilder | CC BY-SA 4.0 |
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| Aug 22, 2020 at 11:55 | history | edited | Deschele Schilder | CC BY-SA 4.0 |
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| Aug 22, 2020 at 6:36 | comment | added | Todd Wilcox | As someone who has mostly learned to Ollie, this is missing something perhaps minor, but in my experience non-trivial. The drag of the front foot up the length of the board actually is an important part of the lift. If you try to learn to Ollie without the front foot drag, it will be much harder. Further evidence of the importance of the front foot drag is given by the application of grip tape along the length of the board making it easier to Ollie. | |
| Aug 21, 2020 at 23:29 | comment | added | Acccumulation | I think the kicktail also bounces a bit when it hits the ground. | |
| Aug 21, 2020 at 14:32 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 21, 2020 at 14:27 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 21, 2020 at 14:18 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 21, 2020 at 14:13 | history | edited | Nuclear Hoagie | CC BY-SA 4.0 |
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| Aug 21, 2020 at 13:58 | history | answered | Nuclear Hoagie | CC BY-SA 4.0 |