PROCESS RESTART

[SHADOW]

Test du mois, roues convergeantes avec Lazytongs.
La roue se met en équilibre!

Test of the month, converging wheels with Lazytongs.
The wheel is balancing!

[thx4]

trop sympa la forme des cymballes :)
j'ai déjà donné : https://youtu.be/ACxgilS-xPA?si=Sui-dvqYaZY-2cmD

[SHADOW]

Bonjour Thx4,
Effectivement, il y avais des contraintes dans les articulations.
J'ai résolu le problème en simulant des rotules aux articulations de jantes, là ou tu a mis des charnière sur ta réalisation.
Le système est dynamique jusqu'au moment ou je met le dernier poids, là la roue se met en équilibre!

Hello Thx4,
Yes, there were some strains in the joints.
I solved the problem by simulating ball joints at the wheel joints, where you put hinges on your realization.
The system is dynamic until I put the last weight, then the wheel is balanced!

[Tarsier79]

Hi Shadow

I remember I built one of those a long time ago. I rememeber a few other memebers also built one. Here is one ABHammer built. You can see it in the middle of this video:

https://www.youtube.com/watch?v=Ny7O7bAn2uU&t=4s

I think at the time, it just turned me off dual pivot points, but the real take from this mechanism should be that just OB will not rotate a wheel.

[SHADOW]

Bonjour Tarsier,
Merci de m'avoir transmis cette collection de réalisations.
Y a t'il eu une version qui renvoyait le mouvement des ciseaux de jantes dans le plan de rotation des roues?
Je pense faire une version ciseaux sur jantes et Lazytongs dans le plan de rotation avec poids actionneurs dans le sens de la gravité.
J'ai déja fais une roue avec des actioneurs dans le sens de la gravité mais ils ne se réarmaient pas au bon endroit, avec les roues convergentes le réarmement sera imposé là ou il faut et je n'aurais pas l'inconvénient d'un surpoids de rassemblement lors de la monté.
Penssez vous que c'est une Hérésie?
Je pense que votre conclusion concernant OB est pertinente!

Good morning, Tarsier
Thank you for sharing this collection of achievements.
Was there a version that returned the movement of the wheel scissors in the plane of rotation of the wheels?
I think to make a scissor version on rims and Lazytongs in the plane of rotation with weight actuators in the direction of gravity.
I already made a wheel with actuators in the direction of gravity but they were not rearmed in the right place, with convergent wheels the rearmament will be imposed where it is necessary and I would not have the disadvantage of an overweight gathering during the climb.
Do you think it is a heresy?
I think your conclusion about OB is relevant!

[SHADOW]

Avancement second essai de roues convergeantes
Deux ensembles montés, manque de matériel pour les deux autres ensembles, ce sera pour 2025!
Bonne fin d'année à tous,
J.B

Advance second test of converging wheels
Two sets assembled, lack of material for the other two sets, it will be for 2025!
Happy New Year to all,
J.B

[SHADOW]

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[Tarsier79]

Great build Shadow. Much better than mine. I do vaguely recall even managing to do a sim that sort of mimicked the 3D element in 2D. I bet you can guess the outcome.

Was there a version that returned the movement of the wheel scissors in the plane of rotation of the wheels?
I think to make a scissor version on rims and Lazytongs in the plane of rotation with weight actuators in the direction of gravity.
I already made a wheel with actuators in the direction of gravity but they were not rearmed in the right place, with convergent wheels the rearmament will be imposed where it is necessary and I would not have the disadvantage of an overweight gathering during the climb.
Do you think it is a heresy?

Not sure exactly what you mean by "in the plane of rotation with weight actuators in the direction of gravity". But, my stance on any mechanism like this remains the same... It won't work unless your mechanism "lifts lightly" or "drops heavily". Positional OB won't help.

[Sam Peppiatt]

SHADOW,
It's a good idea, the converging wheels, I never would have thought of that-------------Sam

[SHADOW]

Echange du jour,
Oscillateur 2 pour 2, Assez lent!

Exchange of the day,
Oscillator 2 for 2, Slow!

[SHADOW]

Resultats du test de la roue convergente:
Test négatifs.
Les efforts de relevage des poids en position 6h et 12h absorbe le gain d'excentration à 3h et 9h, mécaniquement cela fonctionne mais méne à léquilibre.
L'ajout de poids pour faciliter l'ouverture ou la fermeture des pantographes ne change rien!

Convergent wheel test results:
Test negative.
The lifting forces of the weights in position 6h and 12h absorbs the gain of eccentricity at 3h and 9h, mechanically it works but it is still in balance.
Adding weights to make it easier to open or close the pantographs does not change anything!

[Fletcher]

Hi Shadow .. many many years ago I made an almost identical arrangement to you, also using bicycle wheels - instead of using a full SB I started with just a simple expanding V to test the system - and then changed the Vs out for a 2 sectioned SBs - same result as you - I could not find a way to improve it ..

[Sam Peppiatt]

Hi SHADOW!!
Part of the SB is at right angles to the other and converging wheels. It was a good idea; it should have worked. It has to be the most novel wheel I've ever seen. You should save it------------------Sam

[SHADOW]

Bonjour Sam!
Après reflexion je me suis rendu compte que tous les poids étaient en ascension permanente, ce qui consomme tout le gain apporté par l'excentration!
Je me lance dans un essai de roue en descente permanente, je suis optimiste mais je ne suis pas sur que cela fonctionnera!!

Hello, Sam!
After reflection I realized that all the weights were in permanent ascent, which consumes all the gain brought by the eccentration!
I’m going to try a permanent downhill, I am optimistic but I’m not sure it will work!

[johannesbender]

Shadow this is an old tried and tested concept by various individuals which can be found around youtube , but good luck .