0:00:00.030,0:00:02.817
Welcome to another episode of Wintergatan Wednesdays.

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Eh, and here it is business as usual, as you can see,

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I am trying out yet another lifting mechanism.

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It's a conveyor belt ratchet system combined.

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[drilling sound][ratcheting sound]

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That's basically the mechanism.

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Slow-mo rolling.

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[accelerating ratchet sounds]

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[ratchet sounds slowed down]

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In the last week's video I built a[br]ratchet marble lifting system,

0:00:43.929,0:00:45.929
and in that video I said this:

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'Instead I came up with this a ratchet lifting system.'

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'This system really had the ability to lift[br]eight marbles per crank turn.'

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[boink]

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That was all wrong.

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That ratchet system and the way it's[br]driven only lifts four marbles per crank turn.

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And in this episode, I'm going to[br]replace it with something better.

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And I am also going to explain why we[br]need eight marbles per crank turn.

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[♪ unreleased/Wintergatan Wednesdays ♪]

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I thought I'd start with explaining why we[br]need to lift eight marbles per crank turn.

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Do you remember this test music I made[br]to explain the magnet MIDI music system?

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♫

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Just to repeat, every click here,

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[tap][tap][tap][tap]

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is one crank turn.

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turn, turn, turn, turn, right?[br][tap][tap][tap][tap] .

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So if we have a busy pattern on the[br]vibraphone like this:

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♫

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You can already see that we have:

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one two three four notes.

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That means that we need four marbles...

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...per crank turn, to only to play this.

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♫

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But the Marble Machine X has[br]more instruments in the vibraphone.

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So if we add, a... simple snare.

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♫

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off beat like that, we're up to...o...

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nine marbles per two crank turns.

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If so, and if we then continue[br]add a simple kick drum

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and then we add Hi-hat on top of that.

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♫

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You start to see here now.

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Seven marbles for that.

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♫[br]Seven.

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♫[br]Six.

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♫[br]Seven.

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Umm, but this pattern is really simple.

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If you make more complicated[br]kick drum pattern,

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♫

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You see we're already up to[br]eight marbles per crank turn.

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♫

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So this is drums and vibraphone, but we[br]also have the bass on the Marble Machine X.

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♫

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So with a very busy vibraphone pattern,[br]we exceed eight marbles per crank turn.

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Here we have four, seven and[br]eleven marbles per crank turn.

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So... the marble machine would,[br]will be able to play this for some time,

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because it has a lot of marbles[br]stored upstairs.

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But it won't be able to sustain it for five minutes.

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when I make a really...

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busy vibraphone pattern I need to keep[br]the drum pattern a little bit less busy.

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[♪ unreleased/Plot Twist ♪]

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Cheers!

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Coffee. What would we do without coffee?[br][chuckles]

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♫

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Push my luck.

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[bang]

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[crash]

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So... as you can see,

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if we only had four marbles for a crank turn,[br]we would only be able to play,

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♫

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...either only this, or like...

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♫

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...only this...

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♫

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...or only this.

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But if we can get eight marbles per crank turn,

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we will be able to play, almost something[br]like this

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♫

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So, that's why it's so important.

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Okay let's do some prototyping to solve this problem

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I started with some spring[br]cleaning on my workshop,

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And I built a weld cart slash Robo wars contestant.

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The draw for a Sir Darthalot was a little bit tough.

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He's meeting This Old Tony's[br]welding cart in round one.

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So we'll see.

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What I have to measure with[br]this prototype is the ti...me,

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for the marbles needed going there,[br]because this will move extremely fast.

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It will move, boom, boom, boom, boom...

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[♪ unreleased/Plot Twist ♪]

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This profile's nice! Cut.

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Nice to see.

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So this is the improved prototype with[br]some changes.

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And, see if we can get up[br]to marble speed with that.

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I have a slow-mo camera set up.

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The only thing I need now is the marbles.

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So... Let's go over here... and look.

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and, of course, the one box I need,

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is guarded by a demon.[br][laughs]

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I, I love animal but these long leg things,

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I, have to, convince it,[br]that this is the wrong box to sit on.

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Hello, my friend! [tap][tap][tap][br]Can I please take my marble.

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Whoa![br][scream]

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Okay. He went there.

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Good choice. My friend.

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So, I's going to take the marbles,

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and we can start the test.[br][♪ unreleased/Plot Twist ♪]

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We have bigger openings,[br]more like the CAD model.

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We have shimmed the opening so marbles[br]queue won't rock back and forth as much.

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being pushed back and forth,

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I have a new ratchet that's better placed.

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[♪ unreleased/Plot Twist ♪]

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I'm gonna try to max this one out.

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Just beautiful.

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[laughs]

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Let's analyse this slo-mo.

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Um...

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Wow!

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[accelerated speech:] 17 divided on 25

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0.68

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four strokes

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divided on 0.68 seconds, equals...

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...5.8 marbles per second times 60...

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This was 352 BPM.

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Actually, that's some nice headroom.

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Yay!

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This proves that the marbles[br]loads fast enough in this method,

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for playing music up to 200 bpm.

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And, in the prototype I'm using[br]one row of marbles,

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but in the real version, we have eight marbles.

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So, now I need a way to divide...[br]all the marbles onto eight.

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So if you remember we CADed a divide by eight swing.

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Tobias Smidebrant from Göteborg has[br]sent me the first 3d print of that one.

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And, here I am adjusting the weight[br][background:] Alright, pull back a little bit

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not on the backside to[br][bg:] Nearly there.

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really make the swing...

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tip exactly when it has eight marbles on it.[br][bg:] five...six...seven.

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I tapped an M8 hole in the plastic,

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and I used this lock nut[br]to lock the bolt into place.

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and this really worked well.

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You can adjust this with very high precision[br]to fall exactly when, when I want it to fall.

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But, I realized that this swing is too slow.

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because the conveyor belt can lift,

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eight, eight, eight, eight, eight,[br]eight, eight marbles, fast like that.

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and the swing, can't handle,[br]that high marble pressure.

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So I needed another way to divide by eight.

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So I've been prototyping another system.

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I've been trying this, I've been trying that.

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What I come up with is <i>this</i>.

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To divide one single row onto eight[br]just before the conveyor belt.

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This seems to be very reliable.

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So if I now...

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If these marbles...

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The marbles, come into the ring[br]gear from the planetary gearset,

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the blue line there,[br]and they come in this new exit...

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...thing here,

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that has quite complicated geometry.

0:11:04.972,0:11:07.679
But I think this will work great.

0:11:07.680,0:11:11.256
It attaches to the main frame here,[br]as you can see.

0:11:11.757,0:11:15.574
I added some texts (to)[br]this 3D printed part here.

0:11:16.239,0:11:18.239
Ehh... just for fun.

0:11:18.240,0:11:21.267
The marbles come in this thing.

0:11:21.870,0:11:22.751
Uh...

0:11:23.838,0:11:28.539
They get split up onto the four channels,[br]like I talked about last week,

0:11:29.230,0:11:31.550
over the big demagnetizing wheel.

0:11:31.551,0:11:34.771
The magnets are not gonna be colored.[br]It's just for symbolism.

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Uh, the marbles done.

0:11:37.419,0:11:39.784
I'm not really done with this,[br]it's, it's sketches.

0:11:39.785,0:11:42.768
The marbles then gets collected into one row,

0:11:42.769,0:11:47.430
by this loft command I used to create this shape here

0:11:47.495,0:11:49.617
And then they go into this.

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And this is one of the most complicated things[br]that I've ever CADed.

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Because the geometries...[br]on these eight slopes are all individual.

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Uh, so, they have 5 degrees slope,

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seen from this direction,

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but they also have a 5 degree slope[br]seen from this direction.

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they're all individual from the start and[br]need to end up at the same spot in the end.

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So that was a little bit.. [breathes heavily][br]eh... complicated

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This works exactly like the marble divider.

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The channels that are full,[br]will skip the marbles and the marbles will,

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roll into the empty channels

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And then they will be lifted up by

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<i>this</i> the conveyor belt system.

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And the cool thing is, um...

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So I found this inspiration from a YouTube video

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for, like, some kind of industrial solutions[br]for nuclear plants and recycling stations,

0:12:46.485,0:12:49.051
where they use chain links.

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And it was actually, seeing[br]that video, that got me into...

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...understanding how I can[br]build a marble conveyor belt

0:12:56.376,0:12:58.376
that is efficient and looks good.

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So each... chute...

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that holds the marbles,

0:13:04.318,0:13:06.318
has a gear tooth shape.

0:13:06.709,0:13:13.815
So up here, they turn into a gear drive,[br]and the chain links is also fitting in here.

0:13:13.816,0:13:17.814
Between, uh, the gear as you can see here,

0:13:18.078,0:13:23.526
And the cool thing is that, this conveyor[br]belt is not driven by these gears.

0:13:23.589,0:13:25.589
It's not driven by a rotating mechanism.

0:13:26.299,0:13:28.407
This conveyor belt is driven,

0:13:29.172,0:13:30.807
by the two pistons.

0:13:30.808,0:13:33.279
These two pistons[br]will move up and down,

0:13:33.335,0:13:36.577
with 40 millimeters... travel.

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So, just, just you can see here, the right piston[br]here is connected to half of the fish stair steps

0:13:43.089,0:13:46.711
and the left piston is[br]connected to the other half.

0:13:47.219,0:13:52.209
And I also implemented spring tension mechanism here,

0:13:52.210,0:13:56.165
to help the pistons fight gravity a little bit.

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And, on this side we're going to have ratchets.

0:13:59.988,0:14:02.289
they are not sketched in this design yet,

0:14:02.290,0:14:05.293
but they are coming out to the left side here,

0:14:05.294,0:14:08.460
and they will go inside this conveyor belt here.

0:14:08.461,0:14:12.234
And the ratchet will lift...[br]the tooth themselves.

0:14:12.393,0:14:13.393
every chute will...

0:14:13.394,0:14:16.408
whoop-whoop-whoop-whoop, so there's,

0:14:16.610,0:14:19.705
There is several things that is[br]very, very good with this design.

0:14:20.057,0:14:22.230
We're losing very little height.

0:14:22.231,0:14:24.516
If we look at it straight from the side, like this,

0:14:24.517,0:14:27.915
let me put on... orthographic and another perspective,

0:14:27.916,0:14:30.609
and then we have a really flat view like this.

0:14:32.353,0:14:35.417
So, you can see that this is the top of the marbles,

0:14:35.418,0:14:39.462
and down here where the're picked up is[br]just five centimeters or something, and then

0:14:39.463,0:14:42.135
We've done a lot with five centimeter fall height.

0:14:42.136,0:14:44.449
We've demagnetize the marbles.

0:14:44.450,0:14:46.576
And we've routed them around and back.

0:14:46.577,0:14:49.288
And if we look from the front of the machine

0:14:49.290,0:14:51.290
Umm..

0:14:51.291,0:14:54.676
We are actually not going out,[br][♪ unreleased/Plot Twist ♪]

0:14:54.677,0:14:57.482
that far, to the left with this design.

0:14:57.483,0:15:02.690
This, conveyor belt, reminds me of this[br]snake rattle and roll game, which I loved.

0:15:02.691,0:15:04.880
When you climb the waterfall you know?

0:15:04.881,0:15:08.002
In the, like world seven, super-difficult.

0:15:08.003,0:15:12.518
The marbles are like, climbing the snake[br]rattle and roll... system.

0:15:13.193,0:15:17.391
So when these marble shuttles[br]reaches the top, it will tip over.

0:15:17.392,0:15:22.754
And the marbles will then roll on the backside,[br]on the chute that was before them.

0:15:22.755,0:15:26.229
So if you see, the structure here is that the

0:15:26.230,0:15:30.599
marbles will start to roll on this surface, so to speak.

0:15:30.631,0:15:32.972
It's right under the marbles on this one.

0:15:33.408,0:15:38.544
So they will roll on the swing that was[br]before them, and roll off into...

0:15:38.545,0:15:40.910
...some tracks that I did not design yet.

0:15:40.949,0:15:42.861
So...

0:15:42.862,0:15:45.305
So, that's the idea right now.

0:15:45.784,0:15:51.893
I... think this is very viable because I've[br]done a lot of prototyping to get to this point.

0:15:52.560,0:15:54.560
So when I built the first machine I only

0:15:54.999,0:15:56.999
made videos when I was done with parts.

0:15:57.040,0:15:59.040
And I was regretting off towards that I

0:15:59.070,0:16:01.070
didn't show all mistakes and all the

0:16:01.070,0:16:03.297
change designs and stuff and

0:16:03.298,0:16:06.506
the way I'm making the videos now, update every week

0:16:06.507,0:16:11.264
You really get to follow how I go into[br]the dead ends and how I try to

0:16:11.265,0:16:13.554
[chuckles][br]dig myself out of them.

0:16:13.555,0:16:15.211
Thanks so much for watching.

0:16:15.212,0:16:19.529
I'm editing these videos nowadays, a little[br]bit with shoot-from-the-hip attitude.

0:16:19.530,0:16:21.628
[laughs][br]I hope you like it.

0:16:21.629,0:16:23.922
I hope they're some kind of cohesion.

0:16:23.923,0:16:25.184
Have a great day everyone!

0:16:25.185,0:16:27.349
And see you on the next Wintergatan Wednesday.

0:16:27.350,0:16:29.825
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