Reversing an assumption...

[DreamThinkBuild]

Hi Conrad,

The gravity motor that I see with the most potential is the Mann Gravity Mover.

http://peswiki.com/index.php/Directory:Mann_Gravity_Mover

The two pictures at the top of the article show a progression from wooden frame to brick. This was for a government agency in India, I'm pretty sure if the wooden structure didn't work they wouldn't have built a full blown brick version of it in their basement. The other feature from the picture is what appears to be skid marks from the tire on the wooden plywood. Looks like a lot of force was generated.

I've been doing small models of it, hope to test on it more as the weather gets warmer. The snow is just starting to recede here.

These are just my observations from my model and reading through the patents I could be wrong or missing a design piece:

The shaft looks like a dumb-bell with two large bearings mounted to the ends these ride in tapered bearings or cups as he terms them.

The top half of the central shaft forms the pivot.

The bottom half forms the work part of the leverage arm.

The lever arm is the arm that goes to the wheel this creates a sliding effect which is constrained by the top as pivot arm.

The wheel keeps the bottom from pushing out the bottom and adds a rotational effect/mass to both the top and the bottom of the shaft to create a corkscrew effect for the ball bearings, falling down but being pushed up from the weights due to the tapered curve. (he mentions a couple times of falling down into the cup on his old site)

The weights that are off the side of the leverage arm add an upward torque/twist to the end of the lever, pushing up while twisting down into the taper.

Power is taken off the top bearing where a rod is welded on and goes into a pulley with a hole.

This whole shaft must be free to twist and slide in the tapers, that is the challenging part you can't constrain it's axis. The wheel maintains it at certain level though so vibration doesn't become an issue.

From my tests the downward force has to be reduced by finding the proper curve so it's easier to ride along the curve than into it. This can also be adjusted by the angle of the lever arm and distance of weight. Moving weights toward the shaft increase the speed at reduced torque, putting the weights farther out increases torque but reduces speed. My crude tests have not shown self running but do show a lot of force being generated at the end of the shaft.

Got to go to work, I'll draw some pictures of the concept later.

[conradelektro]

@DreamThinkBuild: I did a little search in the net and found this thread

http://www.besslerwheel.com/forum/viewtopic.php?t=2768&postdays=0&postorder=asc&start=0

which contains useful information about this Mann Gravity Wheel. It takes some time to wade through the 4 pages with many posts.

In this thread one finds a patent

http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=JP&NR=10313579A&KC=A&FT=D&date=19981124&DB=EPODOC&locale=en_EP

which has interesting drawings (reading the Japanese text might be a challenge for most). The Japanese patent was filed in 1998 and one never heard or saw anything based on it.

I also attach a drawing found in this thread.

It looks interesting but seems to be difficult to build. One needs a very well equipped and rather large workshop to build that. Small will not do it.

I doubt that the world ever saw a functioning Mann Wheel.

Greetings, Conrad

[conradelektro]

One could build a Mann Wheel without "power output" (see the drawing, based on the Japanese patent). Once it turns (what I doubt), one adds the more complicated power output.

Remark: the little bars are magnets (completely useless).

Greetings, Conrad

[DreamThinkBuild]

Hi Conrad,

Thanks for the links and that Japanese patent, haven't seen that one yet. If the heavy weight is balanced right at the point of contact where the track meets the ground it will not take much to push one side down to cause the heavy ball to move forward. I've tried something similar but might need a small high torque motor to create a low point always in front of the ball to keep it rolling.

I attached a picture of how I see the Mann Gravity Mover working. It's like a sliding lever, spinning top, pushed and rotated along the curve of the bowl. There is an oscillation that seems to be formed at the end the lever arm. It will push the bottom bearing up the side of the wall but it reaches a point where the angle is too steep aided with the rotation of the wheel and weight of main shaft it will fall back down only to be pushed up again. It's very quick oscillation of rise and fall without the wheel it is violent vibration. I'm still unsure of the cup structure, he's says tapered bearings but mentions cup.

[iacob alex]

 
.....sorry,as I see the things , becomes "reversing" a subject treated .
This topic is a simple proposal to reverse the balance into unbalance , of a "working leverage"(see Earth-Moon natural model in the first message)....nothing more.
Perpetuum mobile (Lat.)= continuous motion , is not "infinite"motion as some people try to play Gods...again sorry
Infinite motion is one thing , the motion of the visible bodies is another thing..
So,if we try to "copy" a natural model...we play a normal,human game.
    All the best ! / Alex