David C. Roy's Monarch II

[DHelmick]

I think you may be right about small magnets in the "butterfly" shaped pawls..After watching the close up video over and over  till my eyeballs almost fell out...I see the "free" pawl move quickly towards the center...(brass rods) when it nears the trapped Pawl...no matter what direction it is turning...but when it goes backwards....this action moves it towards the pin..the free pawl then pops out clears one pin and then gets caught on the next..releasing the spring energy.....

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

Hmmmmm...I am going to experiment with small rare earth mags and see what happens..

Dale

[ArtF]

Dale:

  Its how my bat does it.. a small rare earth pulls the latch inwards at the rigth point... I get the feeling he doesnt use any though...

Art

[DHelmick]

Then it must be MAGIC!!!

[RG]

I think you may be right about small magnets in the "butterfly" shaped pawls..After watching the close up video over and over  till my eyeballs almost fell out...I see the "free" pawl move quickly towards the center...(brass rods) when it nears the trapped Pawl...no matter what direction it is turning...but when it goes backwards....this action moves it towards the pin..the free pawl then pops out clears one pin and then gets caught on the next..releasing the spring energy.....

Dale

I think so too...I'm going to order a few small rare earth magnets and run some tests.

Roger

[ArtF]

It does work, that Bat in the ticker video runs with small rare earths.. it just always seemed like cheating to me.. I suspect theres a clever little latch or somethign in there... :)

Art

[DHelmick]

Cut out a few pawls...
Going to set up a test jig and see what happens..

[danmauch]

I have been getting my constant force springs for my kinetic art from SDP in the past. I went to buy some and found they are out of stock. They always seem to be out of stock. I see that the springs are manufactured by Ametek Hunter Springs but they will only sell in quantities of 50 pieces. So is there another source?
Dan Mauch

[ArtF]

Dan:

Ive only bought them once from vulcan.. min order was 100.00 , turned out they werent constant force..but they worked anyway. Vulcan still doesnt have any I dont think.. Let me know if you find a source.. I may want a couple myself.. Close to time to do a bat as a posted project I think...

Art

[DHelmick]

I see plenty in stock for the Negator springs...

Different Torques ...Here is an example...$27.69

Spring Torque
5.5 lb-in

Fatique Life
2500 Cycles

Spring Length
175"

Spring Thickess (t)
0.01"

Spring Width (W)
0.625"

Material
301 Stainless Steel

Drum Size(storage)
1.28"

Drum Size( Output)
2.23"

[danmauch]

The size I need are the ones 3/8" wide. They report out of stock. I'm not positive but thinmk that is what daid used.
Dan

I see plenty in stock for the Negator springs...

Different Torques ...Here is an example...$27.69

Spring Torque
5.5 lb-in

Fatique Life
2500 Cycles

Spring Length
175"

Spring Thickess (t)
0.01"

Spring Width (W)
0.625"

Material
301 Stainless Steel

Drum Size(storage)
1.28"

Drum Size( Output)
2.23"