Irregular gear animation

Comment

Comment by Utku AKÇAY on October 14, 2016 at 1:38pm

These gears remind me of this:

https://www.youtube.com/watch?v=DfznnKUwywQ

pay attention at 4:13

Comment by mark zirinsky on October 8, 2016 at 10:53pm

Thanks Ricardo, anyway, great work.

Comment by Ethan Gross on October 7, 2016 at 7:08pm

Reduction gear assembly with a two trillion year period.

https://www.youtube.com/watch?v=5q-BH-tvxEg

Comment by David Rutten on October 7, 2016 at 2:18pm

Comment by Riccardo Majewski on October 7, 2016 at 11:15am

@david

I should use a component to store every position, then.

I'll have to move it slowly...

My .gif(s) are already speeded up a lot, to draw a track of the holes it will require a lot of time... i'll see what i can do.

@mark zirinskyThis is not something i would be proud of sharing, i want to clean it a bit before....

many, MANY clusters inside, total mess....

I'll try to explain.

It's a try and error: (another .gif here, it's heavy... wait for it...)

Attempting to create a yellow and green version of the same gear, but one time "passing through" the purple gear, and another through the blue one.

In the original definition it had 12x12 samples for each "side", here only 4x4 for better seeing.

Each sample/attempt create a XY point at baricenter of given gear (yellow or green) and Z is the final rotation of the gear, thus creating the 2 black surfaces.

At the intersection of the 2 black surfaces we get a curve from the intersection.

We know that every point in that curve is a combination of XYZ where the yellow and green gear perfectly overlap!

I took a mid poin and casted a vertical ray (red), and collinding with the other coloured graphs i get the interpolated value to have the correct location.

Here sometime it fails because of low resolution, only 4x4... so sometimes you see red ray disappearing.

Sorry for ugly explanation, hope it helps...

I'll try to clean my definition and share it, but i'm sure at the moment it won't help in any way...

Comment by David Rutten on October 7, 2016 at 9:05am

Also, i didn't understood you about the tracing part.

I think he means what curves you get if you track the centre of the holes over time.

Comment by mark zirinsky on October 7, 2016 at 7:55am

Neat. Could make an interesting puzzle or clock. I'd be interested to see the definition.

Comment by Riccardo Majewski on October 7, 2016 at 7:52am

I put the round holes at the baricenter of each shape, the wheelbase (or interaxes) as supposed, costantly changes.... but... what to think over it?

Also, i didn't understood you about the tracing part.

What do you mean?

Comment by Jens Pedersen on October 7, 2016 at 7:31am

Have you tried tracing the inside/the gap between all the gears, as they animate? and what about the centers of the gears :)?

Comment by ng5 Alex on October 7, 2016 at 7:21am

yes i downloaded the posted and resized.

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