Drawings by preoccupied

[preoccupied]

I think all of the ramp door combinations are pretty closely balanced but this six sided wheel looks very balanced on your grid just before the door opens and allows the weight to roll out. I think it is literally unbalanced up to the point where the weight can roll out onto the door as long as the weight rolls all the way to the tip of the foot on the door.

[preoccupied]

Pre, I like the cleverness of the design but you are trying to lift three with one.

I think trying to lift three or four weights with one is inevitable when trying to lift using leverage.

[justsomeone]

I disagree.

[Tarsier79]

I don't

[preoccupied]

"I don't" and "I disagree." are very short statements.

I'm excited to share a very overbalanced wheel design. On the grid it is overbalanced all the way around if the weight rolls to the tip of the foot on the way down. It's just like the other ramps in chambers, see drawing3.png. There are eight chambers total and it is drawn accurately because I used free vector program inkscape to draw the squares and tilt it 45 degrees. There are two opposing chambers four times and it opens up the door on the far side.

[preoccupied]

I said that drawing3.png was over balanced on the grid all of the way around and it's not. Sorry. It is really close to being balanced at the end of its turn. I think it would be able to get to the position where the weight can roll out and it is unbalanced because it is such a mild counterweight leading up to that position at the very end of the turn.

[preoccupied]

I think I know what AB_hammer meant. I put his grid on my picture. AB_Hammer is that correct? This drawing is an additional 8 chambers with ramps in them, a total of 16 chambers (16 weights).
edit: Actually I think it reads 23 on the left and 26 or 23 on the right. The weight to the far right is extra because that is where the weight should move towards (red arrow).

[justsomeone]

AB hammer's grid can be a useful tool but you need to also determine whether the weights are felt at their location or at their pivot point.

[daxwc]

What is holding the ball at +7 ?

[preoccupied]

Good point daxwc. I think a ratchet mechanism could hold the ball in place and some kind of block on the tip of the foot would also be necessary mechanism to keep it from falling out on the opposite side. The block would have to release when the door comes back in contact with the rest of the chamber. I'm more worried about whether the ball can reach the position I intend it to and I don't know how to calculate if it would.

[daxwc]

A one way pinball spring might work. I don't think it will get to +7, I would say +5 most likely.

[AB Hammer]

There is another factor. As the grid is on drawing7.png is only the first point to look at. Then you turn it on its side to sideways on the design and see if there is enough weight above the center line of 9:00 to 3:00 for if not you have a bent rod effect like the balancing pole of a high wire act. For instant, to take a balanced rod on its own axle. Then spin it and end up almost up and down like around the 11:00 to 5:00 marks. Now bend one side downward just slightly and it end up on its side like the balancing pole curve effect below the 9:00 to 3:00 line to the effect of the bend.

Alan

[Tarsier79]

AB, there is no proof, mathematical or practical that suggests more weight above the axle gives any advantage. That is just your own pet theory.

The horizontal grid (vertical lines), is correct, and does have its uses. As Justsomeone tried to point out, there are exceptions to this method.

1. In roverbial balance setups, the weight can be felt in different places, as the extra apparent leverage just produces more stress on the mechanism, and no extra rotational force.

2. When weight is swinging....

[AB Hammer]

That is just my own pet theory? Fair enough but it is also from experience. To overcome my pet theory you will need to have an overwhelming action that starts at the 2:00 point and caries past the 5:00 point. Small incremental actions tend to get caught up in my pet theory. ;-)

Alan

[raj]

I think your drawing is not right.

A circle split and open up in two semi-circles, cannot have a straight base line, for the ball to roll over and back again.