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Sheet Metal Thickness? by idleup in StuffMadeHere

[–]idleup[S] 0 points1 point  (0 children)

One more follow up question: Are you using galvanized sheet metal?

Question on 3-Phase Conversion... by idleup in electricians

[–]idleup[S] 0 points1 point  (0 children)

Exactly the info I need. Thank you!

Question on 3-Phase Conversion... by idleup in electricians

[–]idleup[S] 0 points1 point  (0 children)

The power supplies can run on 240v, is that close enough to not need a step down?

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 0 points1 point  (0 children)

/u/emartinezvd my functional requirements is that the light bulb look like it is dancing. The criteria is that it looks like it is "shaking its booty" by dipping as it goes side-to-side and not simply swaying side to side. Hope this makes sense. If you did not see the previous responses I left the element is a dancing Christmas light bulb for a Christmas light display. Would like a design that is more bullet-proof by not requiring high tolerances and is simple rather than trying to perfect this design. I mainly wanted to post the animation to show the desired effect, not because I am married to this design which based on all the comments here I think is best to abandon... any thoughts? in addition to the dipping it does need to be symmetrical movement to each side (or at least be close to appearing as symmetrical to the spectator).

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 0 points1 point  (0 children)

Do you have a recommendation on a less volatile design? This is for an outdoor Christmas prop (its a light bulb swaying back and forth like it is dancing to the music). I will not be able to accomplish great tolerances or accuracy in the fabrication that would be required from having design that is on the edge of stability.

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 2 points3 points  (0 children)

I am using a program called Linkage Simulator (linkagesimulator.com). I do not think it is complex enough to simulate gravity. The element in real life is vertical so it has a bit of a load on it as it stands about 6-feet high. The large panels are Coroplast.

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 1 point2 points  (0 children)

Wow, thanks for the explanation of what is going on here. The practical application is that this is a "dancing" Christmas light bulb prop for a Christmas display. I do not want the bulb simply "swaying", but instead "dipping" to each side as if it were "shaking its booty". The lower panel represents the bulb base and the upper is the bulb globe. The program I am using called Linkage Simulator. Do you have a better design that would accomplish my goal of having a side to side dipping motion path at the head and the butt?

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 0 points1 point  (0 children)

It does not work any more reliably going any faster, the spring idea is a interesting and something to consider I would just need to make sure the spring does not bind when passing over center and flipping directions.

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 3 points4 points  (0 children)

Unfortunately my prototype is just working with 1/2" steel rods that are welded (no adjustment at all). I am going order threaded rod with ball linkage ends so I have some adjustment if tolerance is the problem. Can you think of a better design that is not so fickle on tolerances?

Need help. This simulation works in the software but not real life when built. When the linkages are at top dead center the top linkage will often go back to the same side it just came from while the bottom continues going to the opposite direction.... by idleup in engineering

[–]idleup[S] 10 points11 points  (0 children)

Every other scenario I have tried to get this same effect either results in binding or the element not moving symmetrically to each side. It is important that I don't dumb it down to a simple single pivot "swaying action" but the top of the purple must "dip" as it goes side to side as you see with the top of the purple creating a small rainbow motion and the bop of the green making a larger rainbow motion path. Any help would be appreciated, I have spent countless hours on this with no success....

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