<div dir="ltr">I can't think of anything better than concentric brass tubing... <div><br></div><div>You may be able to drive them with gears instead of a belt as they can be thinner.. or a combination. I suppose if there were four different sized gears, then each could mate a pinion and they could be al l/4 inch apart so the gears are just 1" deep. Even less... belts are all kinda fat I find... and more parts. </div><div><br></div><div>Hey wait, you could drive two from the front and two from the back. You'd wind up with stuff on the face but it might be interesting....</div><div><br></div><div>Or drive two from the front and at the back have a gear and the centre shaft direct drive... </div><div><br></div><div>Or drive them with some sort of magnets... if each of the hands/rotors has a magnet at a different radius perhaps there's a way of driving it that way.. could be getting more complicated but might be worth thinking about...</div><div><br></div><div>You can drive the face too... Oh, and lights can animate freely without any mechanical (as you already know as I can see that in one of your clocks)...</div><div><br></div><div>Oh here's one.. a two axis arm could move all the hands like a pick and place. Catch is it'd have to be on the front (I think). Imagine a servo that rotates an arm in front of the arms. an appendage reaches down to adjust the arms just as a human would. Would make for some interesting patterns as it resolves conflicts (such as passing an arm near the face underneath an arm further from the face).</div><div><br></div><div>Oh, if you want to go three axis, then the mover could be off the axis (could retract off to the side). Or even a gantry.</div><div><br></div><div>With that you can have as many arms as you want...</div><div><br></div><div>Rather than replicating this thing, just have it large enough to reach all the faces...</div><div><br></div><div>Getting crazy... but this is all thought. :)</div><div><br></div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div dir="ltr"><br><div><div><br></div><div><div>--</div><div>Darcy Whyte</div><div><br></div><div>Software Since '88 <a href="http://siteware.com" target="_blank">siteware.com</a> | Contact: <a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a> | 613-563-3634 by appointment</div><div><br></div><div>Canada N 45° 25'03.1" W 75° 42'21.4"</div></div><div>Art+ <a href="http://inventorartist.com/" target="_blank">inventorArtist.com</a> | Aviation <a href="http://rubber-power.com/" target="_blank">rubber-power.com</a><br></div><div><br></div><div><br></div></div></div></div>
<br><div class="gmail_quote">On Tue, Sep 30, 2014 at 12:12 PM, Adrian Jones <span dir="ltr"><<a href="mailto:adrian@woodsgood.ca" target="_blank">adrian@woodsgood.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I've also been thinking about making some sort of concentric shaft system<br>
handling up to 4 shafts for a piece of art that I have in mind. I would need<br>
6 separate shaft systems and hence 24 steppers but hey, art does not come<br>
easy (tee hee)!<br>
<br>
The best idea I've come up with so far is to use a set of incrementally<br>
larger brass sleeves (as brass is self lubricating) with similarly toothed<br>
cogs soldered/glued to each one. Carefully sized nylon spacers would be used<br>
to keep everything aligned and spaced. A toothed belt would connect each cog<br>
(and sleeve) to its own stepper motor.<br>
<br>
Just thinking...<br>
<br>
<br>
.... Adrian_the_Canadian<br>
<a href="http://www.woodsgood.ca/projects/" target="_blank">www.woodsgood.ca/projects/</a><br>
<br>
<br>
_______________________________________________<br>
Lab mailing list<br>
1. subscribe <a href="http://artengine.ca/mailman/listinfo/lab" target="_blank">http://artengine.ca/mailman/listinfo/lab</a><br>
2. then email <a href="mailto:Lab@artengine.ca">Lab@artengine.ca</a> to send your message to the list<br>
</blockquote></div><br></div>