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« Last post by webby2 on September 22, 2023, 06:14:41 am »
My input is via a long "T" handle Allen wrench. When I start spinning the system I am putting in a lot of work and using one motion or path of input. When the system is spinning up at some point I shift from making a circular motion with my hand at an almost perpendicular relationship to the test part to a centered but angled motion.
The Allen wrench is not fixed to the test part but is pushing against one surface of the test-part so as to cause a rotation of that test part, which it is free to rotate on the shaft it is on.
When I have it spinning up at some value and the test-part starts to lift up the shaft and I am using the angled motion my input feels like it drops way off and as I try to spin faster I need to add a larger resistance to the output shaft to stop it from spinning faster which would lift the test-part up and off of the shaft. Done that a few times now.
The whole test-bed and mount table shake a lot since it is out of balance due to the weight on the test-part.
Since all this is being done with Mr. Hand It does not mean much of anything, but it is only an interesting observation.
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« Last post by webby2 on September 22, 2023, 04:57:00 am »
That design worked for what I thought I needed but it turns out that was not what I really wanted to do, so it did not work for a gain.
I have noticed a few odd things however, one is that when I assemble it with one part or not that the system behaves in a similar manner but not exactly the same. I am meaning that I "can" get the same throughput either way, but in slightly different paths.
I made another part to test some force interactions and that part does something interesting as well when I use the part or not, again similar but not the same and if I use that test part with the other part and spin it up too fast the test part lifts up and off of the shaft, the faster I spin the test part the more resistance I need to add to the output shaft. I have a weight sitting on the edge of the test part and my input rotation is 1:1 with the output rotation.
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« Last post by webby2 on September 17, 2023, 03:12:28 am »
Just putting this out there.
I have held a view for a long time now, after running many tests off and on over several decades, that the permanent magnet is no more a source for the magnetic field than a magnifying glass is a source for light.
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« Last post by webby2 on September 14, 2023, 07:22:17 am »
I have been working on a re-design of my force input section. I wanted to reduce the parts count and keep things as simple and uncomplicated as possible.
I had to give up on some of the possible force amplification to go this way but that should be no big deal.
With the newer force section design I should be able to incorporate my input force and my input motion into one input, one aspect making force and the other making rotation.
I have built 1\2 of the force section and tested it in a static kind of condition, that is, I raise the force potential within the system and after that is done there is no rotational force from that while holding the force potential. This might work fine with only 1\2 the force section but then I would need to provide 2 input sources instead of one.
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« Last post by webby2 on September 13, 2023, 02:13:36 am »
Sometimes trying to follow all the twisted paths gets a little much, but the more I look at them this way the easier they get to follow.
One thing I have not figured out, and most likely I never will, is how I can push against a wall directly and have that push move me closer to the wall or ,conversely, pull on a rope attached to the wall and have that pull move me further away.
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« Last post by webby2 on September 03, 2023, 05:11:27 am »
Still making parts,,, but with what I have I tried to see if I can even find a positional relationship where an input force only transfers as a force with no motivational component other than to move a "lever".
Well It may not be ideally what I am looking for but I can pass a leverage into the system against a force of opposition, keeping the lever balanced by using my system to supply the other half of what the oppositional force needs. I then move that "system" in a rotation fashion and the output is what I think I am looking for,, the not so good part is that it is a fine balance point that can be upset and I am looking for a stable condition that is not easily upset.
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« Last post by webby2 on September 01, 2023, 04:20:23 am »
I am making parts so that I can feel what is happening and then make adjustments as I think I need to.
Here is the funny thing, I need to make my force input as close to only force potential as I can but I know that I can not make it perfect. What I have so far is an input force system that has far less unwanted work needed than the work I should be able to take out,, I think.
I am not using constraints to keep things lined up perfect, example: I have a bottom part that needs to be free to rotate on its axle, well I am using a large wheel that is free to roll on a hard surface with the axle having a bearing for the part to rotate on, so I am not keeping that point in perfect alignment but rather looking at the force that the large wheel is trying to shift with, and then making assumptions that to move that wheel is the work input I would need to provide.
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« Last post by webby2 on August 30, 2023, 03:38:22 am »
What I think I am seeing is that the very methods we use to constrain and design a system is what forces the system to behave the way it does. If we want the system to behave differently then we need to use a different methodology.
My test-bed, as it sits right now, shows me where the zero distance to infinite force is and why, if that is allowed to exist in all aspects, it stops the system from doing anything different than what would be expected.
My test-bed, as it sits, has demonstrated that if I use a standard method of interaction that I get the anticipated 1:1 transfer.
My test-bed breaks the force triangle in one way while still being a mechanical system with everything connected, this allows for a new "path" to exist. I think I understand another way to break the force triangle and allow for another "path" to exist through the very same parts.
Using an alternate method then, and not constraining all points as is usual, should allow my test-bed to behave in a non-standard way.
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« Last post by webby2 on August 29, 2023, 04:48:40 am »
I'm just going to put this out there.
A square does not collapse symmetrically as seen by the center.
Think about it, pulling the 2 cross corners together you take away 2 distance units for an increase in change of 0.82 distance units.
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« Last post by webby2 on August 19, 2023, 02:36:02 am »
To add a little more.
I am using a motion input and a hold torque, if for nothing else it identifies the 2 inputs.
As I change the relationships I go from high hold torque and a lot of motion force to a lower hold torque and an almost zero motion force, I keep changing the relationships and the hold torque goes down to almost zero and the motion force goes high.
My 2 inputs are making the input needed to hold the weight up and move it and they are splitting that needed work dependent on there relationship to each other and not the final work needed. The final work needed describes the total work that the 2 inputs need to provide.
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