Gimbal experiments

[@Ms.Nightshade]

This reminds me a lot of the Spirograph toy. Personally, I prefer your version, both because of its elegance and smooth movement, as well as the simplicity of its design.

[@pocket83]

I actually considered that for a project/video at one time. I wanted to make a ceiling mounted sand pendulum in my entryway, where there is a high ceiling that would allow for a long radius. A heavy enough plumb-bob with a long cable would be quite effective against the friction caused by the sand. It still would require a simple 2-axis needle gimbal at the top, but it wouldn't be too difficult. The better half decided against it. Instead, we have a schefflera there.

[@pocket83]

We were discussing that in the comments. That is a really interesting idea, but a gimbal-router would carve a portion of a sphere, and a spoon dish is sort of elliptical. I intend to build one someday, anyhow.

[@vezzosetto]

this is one of the most mesmerizing videos I've ever seen!

[@Docdaugh]

Double WOW! I'm in the process of building a glide or steadicam and I've been cruising KZbin trying to get ideas for building my gimbal! I love your video (and the drawings). Good job & well done!

[@pocket83]

I have never seen one of those that were not tight to move, and the key here is to achieve as little friction as possible. If there is such a thing that easily moves, I still want to use a wooden gimbal for this project, because of both its visual appeal and challenge to construct. Not trying to shoot down ideas; just explaining what I want. Thanks.

[@JohnHeisz]

I was saying: "what the heck is he doing that for?", then it drew that pattern. I've not seen a mechanical one of these before this. Waiting to see what you come up with in the end.

[@bobriddle6068]

I tried pvc, bearings, and socket head cap screws. This was easier to come up with the rings. Thanks for the ideas.

[@GigantorsDAD]

How did it work out on the final version. The prototype worked real good.

[@pocket83]

Thanks. I know you want to make one, lol. Putting bearings in the gimbal is proving to be tough, though. Anyhow, you just have to look up harmonograph if you never saw one before, it blew my mind.

[@woodstoney]

I've seen an inverted one similar to those used to create the Japanese Sand gardens by basically using a pendulum with a pointed plumb bob attachment on the end of a small rod. When set in motion, it's small tip draws circular and elliptical patterns in the fine sand. Easy to erase and produce another one. You project however, does seem quite interesting.

[@MrNandiuxx]

I’m trying a paint pendulum and this video gave me the idea of what I need thank you for sharing your knowledge

[@AdamEarleArtist]

Did you ever succeed on your next gimbal joint that you were going to build for your harmonograph

[@ryanwolf5396]

this is 3d printable. the bearings idea is reaally good. Which bearings would you like to use?

[@matthewlu150]

I actually learned so much during this videos, thanks!

[@pocket83]

Thanks. I'm glad you enjoyed ;)

[@HostileHST]

608 bearings measure 22 mm x 8 mm x 7 mm, they should be perfect for this project and they cost about $15 or less for a set of 8. You can find them at your local skateboard shop. A mortise bit should be enough to set them into the wood/plywood darn near perfectly assuming you have the right size mortise bit to work with or suffer using a Dremel. This would be great as a stabilizer for photograph. Since I have the bearings, I should try it using this info. You can also recycle bearings from old VCR's. The spindles have excellent bearings in them.

[@LEGOmak]

Great video, very informative. I also really like the drawing, that the gimball made

[@-no-handle]

I came here for the Gimbal lock, it isnt here, but I liked this. Nice video

[@bobikoart]

same

[@NikLyons]

Fascinating!!!! Beautiful!! Good luck!!!!!

[@Nahtanojrepus]

brilliant. i'm looking forward to when you comeplete the harmonograph

[@maxfathi596]

That is so cool. Thanks for making this awesome video.

[@Regnarrussell]

You should have a look at Ball Joint Swivel Bearings. Seems like with a Shaft Collar you could be up and running in no time. Still looking forward to see what you come up with tho.

[@robertsulley]

Good work! I look forward to seeing the results!

[@CV_CA]

is anything happened in the last 4 years?

[@Dusty_Moonpie]

Thank you for this. As if I didn't have enough project going on, now I will be making a one of these with a counter weight for my motorcycle to mount my camera for more stable video.

[@pocket83]

Phillip Morrison Be sure to do plenty of research. Steady-cams are notoriously difficult to get working, and many of the KZbin demonstrations are gross exaggerations of how well they work.

[@Dusty_Moonpie]

pocket83 That's why there isn't one on there now.

[@pocket83]

It would seem that we have similar brains: mine talks to me also. A very simple 2-axis gimbal design does already exist for this application, but I want my H-graph to employ a fancy wooden compound gimbal. As for the bearing problem, I am optimistic that I have a good plan for how I'm going to attack it.

[@xe2bio64]

Brilliant!! Great work in science..

[@Snoc75]

thanks for the great information; cant wait for the completed project.

[@RVJimD]

Very neat, makes me want to go build a simple gimbal to mess with! Did you eventually build the two gimbal device? Don't leave us in suspense.

[@GraniteValleyDave]

This is really cool mate. Did you ever get around to making a harmonograph? I'd love to make my own (or at least give it a go).

[@pocket83]

Thank you very much. I think this is such interesting stuff. Unfortunately time is very limited for me, so I am sorry to say that the results may take awhile!

[@just.some.dud3]

Extremely cool, brilliant idea. Thank you. :)

[@scottmercer2627]

Check out vxb bearings. A 1/4 id roller bearing is cheap. You can still use the shaft and get smooth, drag free rotations. This project has been on the shelf for too long, time to resurrect it. I really enjoy you're vids and can't wait for the next one, no matter the subject.

[@MrNandiuxx]

Man you’re a genius

[@tractyzadorozny2972]

I'm curious why you have a brake rotor

[@ApolloWasReal]

Friction causes the "orbit" to decay, but what causes it to precess? Is there some asymmetry in how it swings?

[@pocket83]

The initial push causes the shape to become (noticeably) elliptical. As for precession, I'm not sure if that would be visible here, but I will tell you this: I spent a few _days_ trying to understand elliptical precession while working on the harmonograph, and I was still confused at the end. After some really intense and weird math, reading, and speculations, I don't think I came to any satisfactory conclusions. I would need to consult a physics professional, but to be honest, I'm a bit skeptical that we understand it entirely. Of course, a harmonograph is an incredibly complex system of physical phenomena, so I will concede that there were plenty of variables/effects that I might not have controlled for. If you have interest in the subject, I would start with the wiki on the Foucault pendulum. Sounds easy enough at first!

[@-no-handle]

Something to think about. Good question. But it makes me think will it still precess if the initial force applied to the object is exactly perpendicular to the line joining the center (of the whole system) and the point of release? I would want to know whether it will still behave in the same way!

[@marka9292]

any closer to a finished product?

[@TheNervousnation]

Pretty damn cool. Kinda want to make one!

[@CosmasBauer]

Wooooow that was cool!

[@jumcopper]

how can i make that gimbal? the measurements

[@amozoness6]

Great work, please post a follow up

[@imaginative-monkey]

Hi, have you made your harmonograph already?

[@loulogiudice5207]

You're a genius!

[@solid_spec]

A spherical ball joint would work nicely, as well

[@eleman-gc]

I think is your best video.

[@steve_ancell]

Not bad. I'll have to show my son this later, he likes artwork stuff.

[@gowithbazza]

Now that's what i need to make a tow bar for my scooter lol

[@steve_ancell]

Bazzles: In the case of a mobo scooter trailer, a universal joint is all that's needed.

[@JohnHeisz]

Nice!

[@Bih_kosti]

heres an idea make a gimbal for your camera to stabilize your footage and decrease shakiness! that should be a challenge!

[@matthewlu150]

Use ultra glossy paper and a gel pen for tighter lines brother

[@Bigwingrider1800]

Dude, U M smart.. nice vid.. dig the geometry .

[@danielstoner7807]

Bigwingrider1800 Meanwhile, my head is starting to hurt watching this, so I'm off to search for monkeys doin' it.

[@GayalchaminAnjanKumara]

wow..great experiment...! thx a lot..

[@JamesF1965]

Could you not shave a side of a ball flat for your plane then capture the ball in a cage perhaps a large bearing . Or am i missing something ? Oh great channels you have enjoy both. Or instead of capturing the ball suspend it with a spring wouldn't that allow for all axis of movement plus up and down ? Now i will thinking about this for days !!

[@efbpdx4556]

Hey Pocket. Just checking in. I hope all is well and I hope to see you soon.

[@telltina001]

so interesting, nice one.

[@gozinta82]

1000 likes, fantastic video! (I got the honors) :)

[@arseniosifontes5878]

Interesante...saludos desde Venezuela

[@dbug18]

This reminds me of a propeller... Maybe it's an optimal shape to move on 2 planes?

[@hermannfegelein4159]

wow you can make nice pics with this

[@EmeraldRubyTea]

Thanks so much!

[@alejandrovallade3352]

sorprendente , gracias .

[@harveebernabe14]

can u pls make a a video for the pbc gimbal beacouse im doing a project it neeed a gimbal pls make it asap

[@RandomGuy0987]

Very nice.

[@dieselphiend]

The pendulum seems to have drawn a perfect propeller. That's really interesting. It even has lines representing dimension.

[@pocket83]

I wonder if that's actually the case; a perfectly aerodynamic propeller probably could be found to have a relationship with some more simple, naturally reproducible phenomenon, just like this. That was a mouthful. Anyhow, I once found this teardrop shape (you can see it at the end of the "drawing machine marker" vid) that resembled an ideal Acheulean hand axe, just by drawing around a circle that was at the end of a beam. Here is my point, and it's an important one: All things physical, and thus, all forms or patterns, intentionally conceived or otherwise, have a mathematical structure that defines them. You can draw a hand-axe using equations that can be graphed, and those mathematical elements can be captured by simple machines. When you build a machine, you are expressing a mathematical truth, and each part is one of the pieces of that expression. This is deeply philosophical stuff. Do we define mathematics, or are we just an expression of it? Good luck out there.

[@dieselphiend]

pocket83 My thoughts as well. I wonder if it would be possible to build a program that could interpret the lines into a 3d rendering. The forces of nature always know best, if we just knew how to listen. Thanks for sharing your experiments with us :)

[@woodwynn]

this is what you need for your spoon

[@kemal_punkt]

very beautiful

[@DrMurdercock]

SAY GIMBLE ONE MORE TIME!

[@mills593593]

Album Artwork!

[@ahmedalii7288]

أكثر من رائع احسنت

[@zenbauhaus1345]

beautiful

[@calvinlin5207]

4:20 wooooooooooooooooooow

[@squidygoo6613]

Can you show us yet

[@sophien3825]

I have that exact same gyroscope ._.

[@br0th3rtub34]

Neat

[@Antiork]

RIP pocket83

[@ACIDKNIFES]

lol no dislikes

[@will--liam7331]

700th like

[@emtodoogoogle9102]

RAPAZ SUA IDEIA FOI BOA MAS EM OFICINA TEM PIVOR DE ESTABILIZADOR DE CARRO DA SERTINHO COMO USA COM CABO COMO VC E INTELIGENTE NÃO DIFICIL COLOCA ELE E USADO E DE GRAÇA

[@grdalenoort]

This came up in the suggested videos on the side. kzbin.info/www/bejne/fnu8p5ZjfrilnJo

[@pocket83]

G. Dalenoort Yes. One of the more elegant designs. I am a big supporter of that channel.

[@apburner1]

Harmonograph? Are you some kind of nancy boy or something?

[@apburner1]

pocket83 So you're the top in your highway rest area encounters.

[@pocket83]

C'mon. Is that the wittiest thing you can produce? I can't waste my talents on a meat-head such as yourself. At least make me laugh. Telling me I'm a homo in the KZbin comments is hardly pushing the envelope. I'm heterosexual! I'll give you one more try.

[@apburner1]

pocket83 I've heard this defense before, I wasn't receiving so I'm not gay.