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Author Topic: Orange Clockwork Ticker  (Read 6616 times)
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ArtF
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« Reply #15 on: February 22, 2017, 04:03:27 PM »

Richard:

 I suspect it would, you might have to remove 4 of the pins, so it really has a fair amount of kick.. always
hard to say though without trying it..

Art
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Dan Mauch
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« Reply #16 on: February 23, 2017, 11:45:31 AM »

Thanks Bob that what I was thinking.
Dan

Dan;

 The more pins you have the slower it rotates, in other words the less of a kick it gets between pins.


Cheers
Bob
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Rocket
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« Reply #17 on: February 23, 2017, 05:54:41 PM »

Art,

In the files you posted you refer to top and bottom (in the jpg pictures).

Is the top the front wheel and the bottom the back wheel?

Richard
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Rocket
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« Reply #18 on: February 23, 2017, 06:02:10 PM »

Art,

In the photo below that you named spool.jpg .

Is that 3 pieces of wood glued together?

Richard


* Spool.jpg (961.59 KB, 2048x1152 - viewed 143 times.)
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ArtF
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« Reply #19 on: February 23, 2017, 09:18:41 PM »

Hi Richard:

 YEs, I refer to top as the front rotating panel, and bottom as the rear. The spool is actually 2 pieces. The main spool has a ring
machined into it, and a second ring was pocketed to fit into the main spools ring, together they make the takeup spool 3/4"
thick to hold the spring as it winds on. That way I didnt have to glue on the second half of the ring, I justr pushed it into the machined
ring and glued it..

Art
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Rocket
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« Reply #20 on: February 24, 2017, 08:23:14 AM »

Art,

What is the length of the eight brass pins? 

Richard
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ArtF
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« Reply #21 on: February 24, 2017, 08:35:33 AM »

Richard:

   They extend to 3/4 inch out of the spool, and press through to the other side
of it flush

Art


 
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Rocket
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« Reply #22 on: February 24, 2017, 02:25:58 PM »

Art,

Sorry to bother you so much.

Why does the ratchet latch have to be notch out?

I cannot see any dimension s for positioni ng of magnet on the crescent bar?

Do I just position the magnets the best I can as per photos?

RR
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Rocket
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« Reply #23 on: February 24, 2017, 04:12:12 PM »

Art,

Why does the RatchetLa tch.dxf look different than
the latch(3).jpg?

Richard
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ArtF
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« Reply #24 on: February 24, 2017, 04:48:15 PM »

Hi Richard:

  The shape of the latch is one of those things that I modified as I built it.
I decided to make it quite thick, and the ring spool doesnt match the hight
of the crescent shaped holers, there is about 1/4" differenc e, so the ratchet
trigger is nothed out to follow around the curve of the spool disk when its
engaged. This keep the latch body from hitting the disk.

  The magnet I use as a spring is about 1/2" from he shaft of the latch,
you can vary this to any confortab le spot, but approx. 1/2 inch from
the shaft allows it to make a good spring for the distance it will have to swing
outward when pushed. The only importanc e to the distance is that the magnet
still have enough power at that point to swing it back in..

  The other magnet I just used as a glide to lower friction on the latch
as it swings in and out. The Latch and the toggle you can expect to be a
bit different from the drawings as I modified them slightly as I built it.

  Notching the trigger toggle for the bar magnet is a bit of a job, as youll find
as you try it.. I ended up holding mine on my router and running a groove in it,
then expoxying a magnet into the groove.

Art
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Rocket
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« Reply #25 on: February 26, 2017, 04:32:11 PM »

Art,

Did you have to try many different types and strengths
of magnets before you hit on the right combinati on?

Richard
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ArtF
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« Reply #26 on: February 26, 2017, 05:13:23 PM »

Richard:

 No, you ll find the neodynium s are pretty good, I used 1/4" round x 1/4long  cyclidric al ones, and a few 1/2" x 1/8 or so round discs.
I got mine at Lee Valley, but ebay'd be an easy spot to get a bunch..

Art

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drezal
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« Reply #27 on: February 27, 2017, 07:33:43 PM »

Cool design.  I've spent hours watching David C. Roy's stuff spinning around and every time I think I'm close to figuring out how to do it something doesn't quite work.  I'll have to try this out, Art.

Also - could another way of slowing or speeding it up be by changing the sizes of the wheels?  Say a larger pinned disk and a smaller spring wheel?

Dan
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drezal
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« Reply #28 on: February 27, 2017, 07:40:08 PM »

And one other quick thought/question that might make creating this even simpler.. . it seems that the little diamond shaped ratchet as well as the larger arm would be perfect things to 3D print.  Hmmmmm 

I built a small and dirt cheap 3D printer (~$175) that has been great in the shop.  It has made parts for a CNC build as well as other odds and ends.  It might play really well with creating kinetic art projects.

Dan
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ArtF
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« Reply #29 on: February 27, 2017, 10:09:34 PM »

Hi Dan:

 Youll find the weight of the vanes and their radius slow it down as they increase. It takes a
bit of tuning to get the weight so its enough to trigger it each time, you need just enough inertia.

  Yeah, i can see where 3d printing the triggers would work, I just dont draw well enough.. Smiley

Art
 
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