[Lab] Model escalator...

[greg atcheson]

You could always use a fake escalator. There are toys that use two pairs of
stairs, one rotating eccentric from center. Hard to describe... Or use a
conveyor with a stair silhouette stuck on the side!
On Sep 14, 2014 9:09 PM, "Adrian Jones" <adrian at woodsgood.ca> wrote:

> Anyone out there in 'makerland' got any ideas for me.
> For an art project, my partner, Lise, needs me to build a pair of small
> model escalators that run against a projected backdrop.
> Each escalator will have a small figurine, one ascending while the other
> descends.
> Rough estimates are that each elevator should be about 18-20" long with a
> 6-8" elevation. For each I've been thinking about using a stepper motor
> driving a loop of toothed belt. The belt has one or more small triangular
> balsa steps glued to it. The stepper will move in one direction (ascend),
> stop and then reverse direction (descend) to end up at the same point,
> while
> the other does the opposite. This cycle then repeats.
>
>
>           /|    /|    /|
>          / |   / |   / |   <-->
>    ___==/==+==/==+==/==+===============___
>   /   \                               /   \\
>  |  A  |                             |  B  ||
>   \___/                               \___//
>      ====================================
>
>
> Imagine pulley A elevated so that hypotenuse of triangur 'step' is
> horizontal... Get it?
>
> Thoughts, suggestions...
>
>
> Many thanks,
>
> .... Adrian
>
>
>
>
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