April 1, 2015 06:51:34
April 8, 2015 18:07:13
April 25, 2015 02:05:28
Sally Haylock safe Travels,and Blessed Journeys
April 27, 2015 14:22:36 · Reply
Fox Sawyer i ride my biiiiicycle
April 27, 2015 15:56:46 · Reply
Charles Bradshaw I found one of these bikes in a theme park in New Zealand ...I found bang-bang control worked well(2/3 meters after a day's practice), but if i went too long without a switch my brain flipped to my regular bike linear controller. Results were ... humerous. Thanks for sharing !!!
May 4, 2015 08:18:53 · Reply
May 1, 2015 20:19:18
Chase Turner Enjoyed the surprise reference to the mechanical adding system -- thanks for including that!
May 2, 2015 17:00:14 · Reply
May 8, 2015 21:59:25
Travis This video is Awesome! Started watching a couple of weeks ago after I saw the Backwards bike video. These 2 videos have me hooked and I really just want to say thanks for everything you do. I would also like to agree with Levi on everything he said. First time I got chill like that in awhile. Thanks
May 14, 2015 20:00:11 · Reply
Weatherlawyer Your man needs to take lessons in communication techniques.
June 1, 2015 18:35:36 · Reply
June 3, 2015 17:42:52
John Markus Add this to your site: document.getElementsByTagName('iframe')[0].src+='&autoplay=1';document.getElementsByTagName('iframe')[1].src+='&autoplay=1'; If you have the video already preloaded once, it should sync.
June 5, 2015 00:26:23 · Reply
Adam Ingle Amazing presentation! The Scientific Method CAN work on YouTube! HA!
June 12, 2015 17:08:07 · Reply
Tibor Schiemann Guys, I know my comment is a bit late, but this rocked! Just the idea of producing two perfectly synced videos from both hemispheres is awesome, not even mentioning the perfect execution or fun you always manage to convey to your audience. I'm glad I'm supporting you - keep up the great work!
June 19, 2015 10:46:55 · Reply
June 25, 2015 16:25:58
July 16, 2015 17:22:55
Michael Richters You think you can't initiate a turn without counter-steering? Not true, as my kids demonstrate to me daily in our bakfiets. Yes, of course simply leaning your torso to one side will cause the bike to tilt the opposite way, but you are neglecting lateral forces that one can apply against the road through the tires. Most bicycles don't have frictionless tires.
July 16, 2015 17:45:57 · Reply
Henry Reich Lateral forces only come from being off balance, not from simply leaning. In order to actually start falling, you must have counter steered (perhaps unintentionally) at least a tiny bit. It's very hard to notice sometimes.
July 16, 2015 17:49:27 · Reply
Michael Richters Counter-steering is certainly the usual way of doing it, and it can be very subtle, but it is not the only way to create the lean necessary for a turn. This would be obvious if you rode a bicycle with a passenger (who has no access to the steering mechanism). When they shift their weight around, they transmit forces through the tires, resisted by the road, causing a lateral wight shift. This effect is not subtle, and is completely independent of my steering motions. Also, if you think active counter-steering is the only way to create a lean, how do you explain the fact that people steer bikes hands-free?
July 16, 2015 18:01:39 · Reply
Henry Reich Ah, I see what the confusion is - by "counter steering" I just mean that the handlebars will turn, not that they have to be actively turned by a rider. For a passenger I'm sure they make it harder to steer, and can change the weight distribution considerably, but if the passenger moves to the right, the bike should lean to the left. Which way does it steer then? If you search for "bricycle" you will find videos of a bike that's been modified to make it un-steerable by leaning.
July 16, 2015 18:13:54 · Reply
Henry Reich I guess what I'm trying to say more specifically is that for a balanced bicycle moving in a perfectly straight line to initiate a turn in one direction, the front wheel contact point has to first move slightly (often imperceptibly) in the other direction. This is a mathematically demonstrated fact.
July 16, 2015 18:19:08 · Reply
Michael Richters Oh, yes, I'm familiar with the "bricycle". You're still failing to understand one thing, though. When the passenger moves laterally, he does push on the bike. And the *bike* leans the opposite way, but that's not all that matters. What really matters is not the angle between the ground and the vertical axis of the frame; what matters is the lateral position of the center of mass of the bicycle/rider system and the point of contact at the ground. If I push against the frame, some of that force leans the bike, but some is resisted by the road, because the wheels don't slip. That moves the center of mass laterally without any steering.
July 16, 2015 18:58:36 · Reply
Michael Richters Something you could try that might convince you (or perhaps you'll see a flaw that I haven't) — stand on one foot, and jump to one side. Then do the same and jump to the other side. You didn't have to first move your foot out from under you, did you? The same should be true of a bicycle. The fact that the rider is free to apply forces from many different points in many directions greatly complicates the question, doesn't it?
July 16, 2015 19:04:20 · Reply
Henry Reich A foot is totally different - it has multiple contact points with the ground, allowing you to apply torques at the ground which help you start leaning in various directions. Where is the torque coming from on a bike to move the center of mass away from the contact point? The rider certainly can't create that torque from inside the system just by changing their mass distribution inside the system. An outside torque/force not at the pivot point is necessary. Gravity is this force (hence the unrideability of the bricycle).
July 16, 2015 19:13:30 · Reply
Michael Richters It can be done on ice skates, too, which are even narrower than bicycle tires. But since that doesn't convince you… Let the rider lean one way, the bike the other way, the let the rider exert a force along the rider's axis, which is now not in line with the point of contact. You must see that this force would be resisted by the ground, and allow the center of mass of the system to shift laterally. This is almost identical to a man in a canoe, who moves from the front end to the back end. The canoe moves under him so that their colnective center of mass doesn't move — but only if there is zero resistance from the water. If we replace the water with a more viscous fluid, that center of mass moves more, until that fluid becomes effectively solid, and the canoe doesn't move at all. The bicycle also doesn't have complete freedom of motion. Lateral forces, even internal ones, cause the bike to lean, but they also push the bike's tires against the road, and that resultant force from the road causes the system's center of mass to move.
July 16, 2015 19:36:21 · Reply
Sergio I Montserrat S And this effect is more noticeable in a bike, where wheel mass and rotation are higher, thus the forces involved in keeping the vehicle upright are higher, and thus riders have to consciously apply counterrotation when they are learning to drive. We don't notice in bicicles because forces are smaller.
July 17, 2015 02:04:25 · Reply
Sergio I Montserrat S It doesn't compare, since the foot and ice skates don't have a torque that works as a gyroscope that actively resists a change in inertia. All other examples you gave also fail to include a gyroscopic stabilizing influence.
July 17, 2015 02:08:24 · Reply
August 1, 2015 04:05:54
September 1, 2015 04:50:04
Earl D Yates Thanks Destin! While I hope that these Scientists are able to find a way to stop the spread of this disease, there are some far reaching implications. This is the first time that I've ever heard of a cancer that is contagious. If a strain of cancer can become communicable among Tasmanian Devils, there is a possibility that some strain of cancer could mutate and become contagious between humans. So, helping to find a cure for these rare critters may in turn, help to prevent a similar outbreak among the human species.
September 3, 2015 21:33:43 · Reply
September 10, 2015 20:05:11
Brian Antonelli Awesome video, thanks Destin! Call me crazy, but I would love to see a video just on how you produced the radar. :)
September 15, 2015 16:01:41 · Reply
Jason VandenBerghe This was AWESOME. And, it might seem like a little thing, but thanks for the Patreon shout-out. Somehow made it real that we're all doing this. :P
September 22, 2015 10:04:24 · Reply
Andre Alforque Thanks for this tour! Definitely helps put the station into perspective.
September 22, 2015 23:53:27 · Reply
September 17, 2015 16:18:32
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Austin Burnham At the end my wife said, "Oh good they sleep on the right sides of the bed." (That means the same side of the bed that we sleep on) Another great video; you have a wonderful family.
April 2, 2015 03:52:49 · Reply
Sergio I Montserrat S While I do like babies, I didn't sign as patron here to watch them. So, I've not seen this vid. But what I see above bothers me: "NOTE: THE DOLLAR VALUE SHOWN ON THIS PATREON PAGE IS WRONG. THE ACTUAL DONATED MOUNT IS MUCH LOWER THAN THIS!" How are we supposed to consider this declaration as? What's its purpose? Of course, nobody would know for certain unless they were explained the charging process and the commissions that money passes through, diminishing from the grand total given in the left of this page. I do know roughly how much is taken from the money because a different creator used to sumarize his Patreon income in his blog. And the money that both the charging agency and the Patreon site take is not outrageous. Expressed my displeassure for your note, Justin, I'd now like to ask you: What is your purpose in writing that note? What is your intent?
April 5, 2015 05:57:24 · Reply
Jedidiah Francis Thanks for sharing Destin.
April 6, 2015 17:22:32 · Reply