Yes, this special action of the Kassel wheel potentially suggests some kind of gravitationally balanced structure, and might be a hint towards CF/Inertia type of concepts. I always considered this a real possibility, and still do. CF/Inertia concepts can offer a different perspective, and most interesting to study, I think.
On the other hand it is also possible to note, that a wheel with a swarm of small pendular/swinger type of masses organized around the perimeter, just hanging... that could also produce this strange "hoovering effect". When rotated slowly without a notable acceleration, the small masses won't oscillate much and won't noticeably change or interfere with the rotation. But then how the wheel or all the swingers know when to stay OBB and when to hang just straight down? Based on speed, but how?
One thought that keeps coming back to my mind is that if you take any wheel and spin it in a clockwise rotation the right hand side is becoming more weightless in places and the left hand side is feeling the effects of gravity more in places.
Have a look at this simulation in Algodoo. Run it then turn the motor off after it settles down.
In Algodoo (rightly or wrongly) it will gradually speed up until it reaches about -1.30 rads/s then it stabilizes. If you use the motor to take it to about -1.40 rads/s then turn it off it will decrease its speed.
Notice how the pendulums increase and decrease their length altering their timing as the yellow weights move up and down whilst either on the left or the right and the timing and placement of these events.
Just a little more description about the last sim.
The grey blocks are a way of limiting how far the storks bill stretches downward.
Normally they would make contact on the descending side around 4 o'clock.
I'm thinking that maybe mechanisms like this which in the past I have described as reactive pendulums have the ability to cause resonance when the wheel turns.
This simple design could be used alongside something else that is operated by the storks bill moving in and out in response to the gravitational forces.
Bonjour Graham
J'ai fais un essai avec un pivot sur palier, le résultat est différent!
Je pense qu'il y a un réel problème avec la fonction roulement sous Algodoo comme l'avait déjà signalé Robinhood.
Hello Graham
I did a test with a pivot on bearing, the result is different!
I think there is a real problem with the rolling function under Algodoo as already reported by Robinhood.
I just remember reading different versions of the same text, and thought there have to be some translation to it, and then an original version must exist. But not a big deal anyway.
Roxaway59 wrote: ↑Wed Mar 19, 2025 6:47 pm
One thought that keeps coming back to my mind is that if you take any wheel and spin it in a clockwise rotation the right hand side is becoming more weightless in places and the left hand side is feeling the effects of gravity more in places.
Have a look at this simulation in Algodoo. Run it then turn the motor off after it settles down.
In Algodoo (rightly or wrongly) it will gradually speed up until it reaches about -1.30 rads/s then it stabilizes. If you use the motor to take it to about -1.40 rads/s then turn it off it will decrease its speed.
Notice how the pendulums increase and decrease their length altering their timing as the yellow weights move up and down whilst either on the left or the right and the timing and placement of these events.
Graham
Unfortunately, I'm not really versed in Algodoo. I'm afraid I can't add too much useful thoughts with this.
I played the sim, and I see the structures oscillate up and down. Yes, these spring-pendulum type of devices can produce some chaotic behaviour, hard to predict from a human viewpoint.
But Man... This Algodoo feels like some futuristic car which want to do everything by itself, and you have no idea how to do the simplest thing in an intuitive way. Probably I should check the tutorials first... Ah, I guess not my kind of beef. :D
Last edited by Gregory on Thu Mar 20, 2025 12:07 pm, edited 1 time in total.
