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By Kenrolande
#10512
Years ago, I mounted a smaller and larger permanent magnet across
the centers of two equal size gears so one end of larger one was
positioned between the poles of the smaller. Since that "tee" formation was
unstable, they rotated a few degrees - then froze where the fields
equalized. That was years ago and I've thought a lot about it, since.
Today, mounting a large center bi-polar (poles parallel to ends) magnet
to a larger gear with 19 smaller planetary ones with a 7 to 1 ratio appears
to work well on paper. The ratios to size and proximity of the magnets is
something I could only work out with a prototype. A different ratio may
work better.
On paper, the planetary gear's magnetic fields near the end of the larger
one's north will cause the smaller gear to rotate. Due to the 7 to 1
mechanical advantage, this rotation will turn the larger gear - I'm hoping
at least 10 degrees - which will put the south end of the large magnet in
an exact reverse position as the north propelling the north end 10 more
degrees to the next planetary magnet mounted gear.
If it works like it seems on paper, speed may be controlled by making the
center gear thick enough so it can be slid up above the field ranges of the
planetary magnets.
Because of my limitations, I have decided to, at least, throw the idea out
there on the chance this idea works and keeping it to myself will not help
anyone.
To make it simple, I've drawn one bar magnet on the center gear.
There may be lots of room for improvement, too. Since the end poles are
the functional part, the center can be replaced with two medium sized
magnets which will open up the center allowing for more of them. A good
CAD program may reveal the possibility of placing up to 14 of them - so
their forces push things in the right directions - without the center and
planetary magnets hitting each other and, since they would line up at
different points of rotation, it could even decrease the amount of travel
needed for rotation.
I've have a jpeg of my rough drawing.

7/23/2006
Recently I've taken some gears and magnets on a 7 to 1 ratio
I started with 19 planetary gears and quickly noticed they were too
close together. 17 gears the magnets interfered with each other so
15 appeared to be the right number. A coil around the outer gears should pick up 60 htz with only 4rpsec.
Have learned a lot about gears... Paid $60 dollars for them
About 1inch gears around 3.5 inch with 20 pitch. ( along with
a $100 plus order of unusable gears with different teeth.)
(1) 1/4 inch centers mounted on wooden pegs and 3/8 inch center
is too much drag. What I put together needs watch precision and the
drag of about pin sized axles..
(2) when working with small gears, distance and height must be exact
or they either catch or bind.
(3) size and strength of magnets matter = working with 1/4 by 1/4 by
5/8 ceramic with poles at ends. ..Paid $85 for them as well ...
(4) A board - that everything sat on - warps..
Although unsuccessful, have noted, with what I could get to move,
for the most part the magnetic forces want to push everything in the
directions predicted when I put 14 alternating fields on center and
a couple planetary outside but, hard to determine if smaller gears will
push center because of all the drag, binding and difficulty to get small
magnets centered on plastic gears using hot melt glue gun.
On a larger scale, could get away with larger tolerances but, cost
becomes an issue..

Reward: Make it work, mass produce it as cheaply as
possible so it cuts oil demand.. That will be
reward enough..
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