PROCESS RESTART

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Tarsier79
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Re: PROCESS RESTART

Post by Tarsier79 »

Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
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Re: PROCESS RESTART

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Tarsier79 wrote: Mon Feb 07, 2022 7:56 pm Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
What if you had more than one pivot? :-)
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Re: PROCESS RESTART

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Tarsier79 wrote: Mon Feb 07, 2022 7:56 pm Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
What if you had more than one pivot for pendulum which accelerates as it swings down and decelerates as it swings up?

Could you generate enough out of balance to get it over the top? :-)
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Re: PROCESS RESTART

Post by Georg Künstler »

by Senax » Tue Feb 08, 2022 5:39 am

Tarsier79 wrote: ↑Mon Feb 07, 2022 7:56 pm
Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
What if you had more than one pivot for pendulum which accelerates as it swings down and decelerates as it swings up?

Could you generate enough out of balance to get it over the top? :-)
And what if you have a wandering pivot point, a wandering suspension point ?
A wandering suspension point will add or subtract forces an a pendulum, Is is a push/pull action on the pendulum and therefore we have the chance to amplify an oscillation.

It will generate enough out of balance to get it over the top.
Best regards

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Re: PROCESS RESTART

Post by Senax »

Georg Künstler wrote: Tue Feb 08, 2022 12:07 pm
by Senax » Tue Feb 08, 2022 5:39 am

Tarsier79 wrote: ↑Mon Feb 07, 2022 7:56 pm
Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
What if you had more than one pivot for pendulum which accelerates as it swings down and decelerates as it swings up?

Could you generate enough out of balance to get it over the top? :-)
And what if you have a wandering pivot point, a wandering suspension point ?
A wandering suspension point will add or subtract forces an a pendulum, Is is a push/pull action on the pendulum and therefore we have the chance to amplify an oscillation.

It will generate enough out of balance to get it over the top.
And the beauty of the 360° pendulum is that if it's well made with minimum friction at the pivot, etc. then very little boost is needed to get it over the top, eh! :-)
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Re: PROCESS RESTART

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Suite MT 22
et bidouille
J.B

Suite MT 22
and fiddle
J.B.
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Re: PROCESS RESTART

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MT 22
5 tours
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Re: PROCESS RESTART

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Ma dernière élucubration
J.B

My latest fantasy
J.B.
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Re: PROCESS RESTART

Post by SHADOW »

Les températures devenant plus clémentes, je vais pouvoir retourner à l'atelier pour faire des essais.
Trois idées à tester, il y a du travail !!!!

J.B

As the temperatures become milder, I will be able to go back to the workshop to do tests.
Three ideas to test, there is work!!!!

J.B
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Re: PROCESS RESTART

Post by Fletcher »

Very crisp and professional drawings - I like them - good luck with the test builds. There is always an opportunity to learn something of value for those that get their hands dirty.
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Re: PROCESS RESTART

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Version améliorée page jouets.
La précédente nécessite une chaine pousseuse.
J.B

Improved version page toys.
The previous one requires a pusher chain.
J.B.
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Re: PROCESS RESTART

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Tarsier79 wrote: Mon Feb 07, 2022 7:56 pm Swinging objects create varying forces on the wheel. There is no net overbalance when you make one weight push another weight out relying on one pivot.
Agreed.

But suppose you have a second pivot point on a flat pendulum which allows a rider to be flung inwards during the acceleration phase as the pendulum goes down and outwards during the deceleration phase as the pendulum goes back up.

For a theoretician this has the interesting aspect that in involves the 4th derivative.

1st derivative - travel in straight line - translation energy
2nd derivative - acceleration in a straight line
also constant angular velocity in a circle (acc. towards the centre).
3rd derivative - change in acceleration towards the centre
as in the case of the 360° pendulum.
4th derivative - change in THAT acceleration as takes place to a pivoted passenger on
a pendulum who flung backward in the acceleration phase and forward
in the deceleration phase.

There's a name for the 4th derivative. It's called jounce or snap. I prefer snap which conjures up an image of a hungry crocodile whereas jounce conjures up nothing.

There is reason for liking the idea of a fourth derivative. It makes it seem one has got outside the three dimensions of space and into the 4th dimension of time. It's as though one has jumped forward from one minute to midnight to one minute past.

I make no apologise for what may seem to many as a flight of fancy.
A lively imagination is a very important component of discovery.
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Re: PROCESS RESTART

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Senax wrote: Wed Feb 16, 2022 1:24 pm . .. .. .

I make no apologise for what may seem to many as a flight of fancy.
A lively imagination is a very important component of discovery.
The question in everyone's mind, Frank, is when do you plan on pulling your fancy flight out of that holding pattern and bring it in for a landing?
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Re: PROCESS RESTART

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Essai 20220306.PNG
ROUE LAZY TONG
Reprise pour essai des éléments de la page jouets
Nota : ordre d’identification aléatoire et définitions subjectives.
MT 138 E défini comme Pantographe amplificateur de mouvement ou multiplicateur de force type palan (faible force et longue course d’un côté du point fixe et faible course force accrue de l’autre)
MT 139 D défini comme alternateur de mouvement actionné par masselottes
MT 140 C défini comme alternateur de mouvement actionné par masselottes inverse au précédent
MT 141 A défini comme chaine de traction, B défini comme jonction divergente.
Le hochet en bas de page est considéré comme élément d’interpellation. Par ailleurs, suggéré comme masse antirebond.
1ere idée :
Actionneur défini comme alternateur de mouvement actionné par masselottes, chevauchant pour extension lors de la descente, s’agrippant pour rétraction lors de la remonté.
L’association de E et CD c’est avéré contradictoire selon l’arrangement ayant pour principe que les jouets CD servaient à étendre ou contracter E. des contraintes opposées ont été observées dans les ciseaux.
L’arrangement final c’est trouvé efficace et très dynamique dans sa réalisation, déclanchement de l’extension à 2h et contraction à 8h.
La multiplication par 8 de cet arrangement sur une roue a résulté à un équilibre de la roue avec une concentration des arrangements contractés plus deux arrangements étendus d’un côté de la roue quel que soit l’adaptation de la trajectoire de E.
L’utilisation de A n’a pas été trouvée pour cette idée, B ayant été considéré comme trajectoire divergente du point de guidage mobile de E par rapport au point fixe de E.
Une simulation avec le logiciel Algodoo a confirmé après coup le phénomène.
2eme idée :
Utilisation du principe précédent pour lever une masse décalée pour compenser le phénomène précédent.
Essais non concluant l’actionneur déclenche la montée de la masse à 12h lorsqu’il atteint la position 4h30. Renvoi par poulies et câbles ont été utilisés.
Simulation trop complexe pour utiliser le logiciel Algodoo (maitrise des transferts par câble)
3eme idée :
Utilisation de chaque jouet pour une fonction séparée.
Le pantographe E utilisé pour lever un poids sur une longue distance, point de fixation à la première intersection de ciseau et pont de traction à la première articulation.
Les deux alternateur CD utilisés en miroir pour tirer le pantographe à la première articulation pour la montée du poids vers la jante et au second ciseau pour la remonté du poids vers l’essieu.
Les point pivots de fixation sont situés au milieu entre les deux points pivots de tirage de ces derniers
Utilisation de deux chaines avec chacune une convergence pour relier les points de tirage des alternateurs CD
La trajectoire du pantographe est verticale et est orienté dans le sens des axes X Y
L’ensemble des alternateurs est décalé de 45° par rapport au pantographe et est orienté dans le sens des axes Y Z
L’orientation Y Z m’est venue à l’esprit à la suite de l’étude graphique des potentiels de couple moteur.
Cette orientation me semble confirmée par les commentaires sur certains dessins MT et que j’ai soupçonné lors de mes essais MT22. Les mouvements angulaires dans le plan X Y ont tendance à déséquilibrer la roue négativement et l’utilisation du plan Y Z me semble permettre la compensation de ce côté négatif.
Premiers essais non concluants 20220228 :
Problème de synchronisation des alternateurs, il se mettent en crabe.
Contrôle de la capacité de levage du pantographe, il faut quatre masses coté tirage pour lever une masse vers la jante avec un pantographe à cinq ciseaux (4+1)
Un tel arrangement ne peut pas fonctionner car il faudrait plus de course pour les masses des alternateurs et mènerait à l’équilibre dans le meilleur des cas pour ce que l’on recherche.
Second essai du Lazy Tong 2022 03 02 :
Une simplification m’est venue à l’esprit concernant les alternateurs et la réduction de leur course angulaire et qui vas dans le sens du MT143.
Utilisations de ces derniers en alternance.
Inversion ou symétrisation du pantographe. L’inversion du pantographe n’est pas bonne, la symétrisation implique un effort de traction qui n’altère pas le gain disponible.
L’essai 2 ciseaux en traction et 3 en poussée semble concluant, 2 poids d’un côté et 2 poids de l’autre = équilibre
La course des alternateurs est réduite avec MT143, pour avoir plus de couple sur ces alternateurs il faut déplacer le levier de jonction et créer un nouveau point de traction
Essai sur les alternateurs 2022 03 04 :
Les alternateurs ont été simplifiés et se résume en un parallélogramme.
Le parallélogramme est excentré avec des proportions de 1 et 4.
Montage de l’ensemble pour essai de monté à 12h - 2022 03 06 :
Dans le principe, les alternateurs sont orientés à 90° dans le plan Z-Y pour leur sens de fonctionnement.
Les pantographes sont orientés dans le plan X-Y pour leur sens de fonctionnement.
Pour le changement d’état du pantographe le décalage des deux éléments est prévu entre 22°5 et 45°

La proportion de l’alternateur 1 et 4 est insuffisante pour monter le poids orbital du pantographe.
La poulie de renvoi absorbe une partie de la force disponible.
Le système est en équilibre avec trois poids sur l’alternateur et deux poids sur le pantographe.

Le relevage du pantographe à 6h et prévu suivant le même principe que pour le levage à 12h mais à un autre point de tirage symétrique au premier.

A suivre
J.b

LAZY TONG WHEEL

Retake for test of the elements of the toys page
Note: random order of identification and subjective definitions.
MT 138 E defined as Pantograph Motion Amplifier or Hoist Type Force Multiplier (low force and long stroke on one side of the fixed point and low stroke increased force on the other)
MT 139 D defined as mass-actuated motion alternator
MT 140 C defined as reverse-mass motion alternator
MT 141 A defined as traction chain, B defined as divergent junction.
The rattle at the bottom of the page is considered as an element of interpellation. Moreover, suggested as an antirebond mass.

Idea #1:
Actuator defined as motion alternator actuated by masselottes, overlapping for extension during descent, gripping for retraction during reassembly.
The association of E and CD turned out to be contradictory according to the understanding that CD toys were used to extend or contract E. opposite stresses were observed in the scissors.
The final arrangement was found to be efficient and very dynamic in its realization, with the extension at 2 o'clock and contraction at 8 o'clock.
The multiplication by 8 of this arrangement on one wheel resulted in a wheel equilibrium with a concentration of the arrangements contracted plus two extended arrangements on one side of the wheel regardless of the adaptation of the trajectory of E.
The use of A was not found for this idea, B having been considered as diverging trajectory of the moving guide point of E compared to the fixed point of E.
A simulation with Algodoo software confirmed the phenomenon afterwards.
2nd idea:
Using the previous principle to lift a staggered mass to compensate for the previous phenomenon.
Inconclusive tests the actuator triggers the rise of the mass at 12h when it reaches the position 4h30. Return by pulleys and cables were used.
Simulation too complex to use Algodoo software (control of cable transfers).

3rd idea:
Use of each toy for a separate function.
The pantograph E used to lift a weight over a long distance, fixing point at the first scissor intersection and traction bridge at the first joint.
The two CD alternator used as a mirror to pull the pantograph at the first joint for lifting the weight towards the rim and the second chisel for lifting the weight towards the axle.
The fixing pivot points are located in the middle between the two pulling pivot points of the latter
Use of two chains with each a convergence to connect the drawing points of the CD generators
The pantograph path is vertical and oriented in the direction of the X Y axes
All alternators are 45° offset from the pantograph and oriented in the Y-Z direction
The Y Z orientation came to my mind as a result of the graphical study of engine torque potentials.
This orientation seems to me confirmed by the comments on some MT drawings that I suspected during my MT22 tests. Angular movements in the X Y plane tend to unbalance the wheel negatively and the use of the Y Z plane seems to me to allow compensation on this negative side.

First unsuccessful trials 2022 02 28:
Generator synchronization problem, they’re turning into crab.
Checking the lifting capacity of the pantograph, it takes four weights on the pull side to lift a mass towards the rim with a pantograph with five scissors (4+1)
Such an arrangement cannot work because it would take more stroke for the alternator masses and would lead to balance in the best case for what one is looking for.

Second try of Lazy Tong 2022 03 02:
A simplification has occurred to me concerning the alternators and the reduction of their angular stroke and which goes in the direction of the MT143.
Alternating uses of the latter.
Inversion or symmetry of the pantograph. The reversal of the pantograph is not good, the symmetrization implies a tensile effort that does not alter the available gain.
Test 2 scissors in traction and 3 in thrust seems conclusive, 2 weights on one side and 2 weights on the other = balance
The travel of the alternators is reduced with MT143, to have more torque on these alternators it is necessary to move the coupling lever and create a new point of traction

Generator Test 2022 03 04:
The alternators have been simplified and can be summarized in a parallelogram.
The parallelogram is offset with proportions of 1 and 4.
Assembly of the assembly for test of assembled at 12h - 2022 03 06:
In principle, the alternators are oriented at 90° in the Z-Y plane for their direction of operation.
Pantographs are oriented in the X-Y plane for their sense of operation.
For changing the state of the pantograph the offset of the two elements is provided between 22°5 and 45°

The proportion of alternator 1 and 4 is insufficient to increase the orbital weight of the pantograph.
The return pulley absorbs some of the available force.
The system is in balance with three weights on the alternator and two weights on the pantograph.

Lifting of the pantograph at 6 o'clock and planned according to the same principle as for lifting at 12 o'clock but at another symmetrical drawing point at the first.

To follow
J.b
Last edited by SHADOW on Mon Mar 07, 2022 6:58 am, edited 1 time in total.
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Re: PROCESS RESTART

Post by SHADOW »

Projet actuel.
J.B

current project.
J.B
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