So as usual I decided to have a go in a round about way!
Below is a video of me testing it against different Stator
magnets.
I simply mounted a Ring magnet on a sliding brass rod as pictures below and
mounted on a bike wheel that I was using for another test.
Video1
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW1.wmv
Right after stacking and un-stacking
magnets on the stator, I am happy that the strength is about right.
A short video below showing it lift when the Rotor magnet is at the top of the
wheel.
Video2
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW2.wmv
Here is video3 showing two points firing at the same time.
At the moment the wall is too strong and I need to reduce the strength of the
stator stacks. One thing you will notice though that the faster you push through
the higher the magnets will flick, so maybe a small force is needed on the
stators and go for a higher RPM to do the flick as such.
Video3
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW3.wmv
Next I decided to go for the big wheel build.
I am going to use big bar magnets and Clear tube.
Magnet is a nice fit without being too tight.
Here is a quick video to show the strength of these magnets.
Video4
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW4.wmv
The clips turned up for mounting the tubes.
Now to Cut out the BIG Wheel!
First I drilled a center hole and got a 1 meter length of
extruded ally and attached a pen to it.
Marked out the lines for each arm.
Now made an attachment for the Router.
It cut out the circle perfect.
Next was to cut out some bearing plates.
And lathe out a insert to keep the bearings spaced so they
can be done up tight later when on the mount
Bearing plate mounted
And finaly it all up and mounted, ready for a Wind-Down
test.
I think I got the bearings spot on as takes over 10
minutes to wind down from 50 RPM
Here is a movie showing the wind down. Very impressed.
Video5
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW5.wmv
Got the clips attached to the wheel
Then I cut down the 4 tubes and glued rubber end caps on
after inserting a magnet in each.
Then taped up the ends to just make sure they are going to hold
After spending hours altering the pipe length and the best
place to mount, I have came to my final configuration regards where they should
be and their length in relation to the magnets strength and travel.
As you can see they got chopped down alot. Please to say the wall is not so bad
with a big wheel and not so much stress on the bearings as I thought
I tried various steel screws to hold the plastic brackets
in place to find the right one that would hold the magnet each end of the tube
also, but they had to be weak enough to allow the replusion of the next stator
magnet to release it.
I think I have got it close enough as the video below shows, but still got to
experiment a bit more.
Video6
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able to see the video box above, so please
click on link below to download. MGW/CLaNZeRMGW6.wmv
Here is a quick video to show that one Rotor magnet is
more than enough to get it past the 270 degree mark.
As stated before the wheel is heavy but it is on very loose bearings and only a
small amount of weight is needed to unbalance it.
Video7
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able to see the video box above, so please
click on link below to download.
Sorry I am not posting the results of my experiments as
this would take too much time.
But when I have something I can shout about and that works 100%, then be assured
I will post an update.
For now this is just a Blog as such of what I am working on.
