CG Showcase of Overbalanced Wheel

[helloha]

a very simple centrifugal motion animation

http://www.mediafire.com/download/8bkm327om7g11k0/centrifugal_motion_demonstration.rar

[helloha]

trying my hands on wm2d, model a wheel design (unfortunately simulation took too long so don't bother about it) but still having a large scale size (don't know why when import from other software, with small scale, to wm2d, it ended up having large size) , VIIII

[helloha]

trying my hands on wm2d, model a wheel design (simulation prompt too much problems, so give up on it), X

[helloha]

a very simple centrifugal gravity animation

http://www.mediafire.com/download/qpzg34pn3xoqx5q/centrifugal_Gravity_Demonstration.rar

[DreamThinkBuild]

Hi Helloha,

While cleaning files from the hard drive I found this sim I did from the Mann gravity mover. The friction was set to about that of smooth steel on steel with lube, COEF 0.3. The real design would use bearings.

The way I see it would work is we have a moveable lever. This lever with two ball bearings sits in a cup at the bottom and a tapered cone at the top.

An outside lever with a lever offset it attached to a weight adds a torque to the bottom of the main lever. It wants to push the bottom up when vertical but as it rides the curve it gets to a point where it reaches a horizontal maximum then is pulled back down.

There is a added nutation to the end as it tries to balance itself. It can never really find balance because the heavy weight is also adding a turning torque to the end of the ball bearing which corkscrews(twisting) the main lever up and down the curve.

It's like taking a marble, spinning it while rolling it around in a rounded salad bowl. The spin will make it climb the side of the bowl to a certain maximum then fall back down tracing an elliptical orbit in the bowl.

A wheel would eliminate a lot of the vibration in the main lever and keep the nutation to a smaller amplitude.

In the very beginning of the video the main lever is 90 degrees up. If you go frame by frame and watch the arrows you can see the weight, torque the bottom bearing up the side of the cup.

The bottom cup and top taper must be a proper curve and radius otherwise the sim would not work.

PS: I had to downsample it, the original was 219mb.

This is only a sim so take it for what it is.