Magnetic Motion Device

[DreamThinkBuild]

Hi Casman,

Thank you for your input. I have measured out the original version for these scale magnets, it will take 46 magnets and be approximately 100mm(3.9") diameter which is not bad for small scale. The angle should work as it's matched to the stator magnet and rotor centroid. Printing can be done as two parts, easier to get the magnets in. The arms would be attached in the center to another support not shown. I'm still experimenting with the original design once I finalize it I'll print it and build.

[casman1969]

Hi DTB,

Really like your graphic sim, nice work. That's exactly as I envision it. I doubt we'll be able to scale it down that far but it would be nice if possible. Curvature is going to effect the magnetic pattern so a compromise will most likely have to found. Also, in looking at the original setup it appears (heavy emphasis) that the stator magnets are 1 x 1/4 x 1/4 and the rotor mags are 1 x 1/4 x 1/8 or some comparable derivitive of that. Just an observation. Checked on the prcing for 100 of the former and the price would be $82.00 USD. Rotor mags are roughly $.50 apiece if my measurements are correct.
I have a couple of1/4" thick x 3" wide x 44" diameter aluminum rings and could double them up to give me 6" if needed but haven't calculated how many mags that would take. I still believe we'll have to curve the track first for proof of concept and that will require curving the rotor base to conform as well. Though all of us have seen this concept for a long time, this topic is renewing my interest.

[casman1969]

DTB,

Do you have a 3D printer???

[e2matrix]

Hi DTB,

Really like your graphic sim, nice work. That's exactly as I envision it. I doubt we'll be able to scale it down that far but it would be nice if possible. Curvature is going to effect the magnetic pattern so a compromise will most likely have to found. Also, in looking at the original setup it appears (heavy emphasis) that the stator magnets are 1 x 1/4 x 1/4 and the rotor mags are 1 x 1/4 x 1/8 or some comparable derivitive of that. Just an observation. Checked on the prcing for 100 of the former and the price would be $82.00 USD. Rotor mags are roughly $.50 apiece if my measurements are correct.
I have a couple of1/4" thick x 3" wide x 44" diameter aluminum rings and could double them up to give me 6" if needed but haven't calculated how many mags that would take. I still believe we'll have to curve the track first for proof of concept and that will require curving the rotor base to conform as well. Though all of us have seen this concept for a long time, this topic is renewing my interest.

DTB  (not sure how I got DTF in previous post ? - sorry about that) I would agree with casman1969 that a circle that small seems like it would be too small just as an off-the-cuff guess.     
casman1969 do you think using aluminum rings would be a problem due to the Lenz effect they have - same as copper?   When I discovered the Lenz effect first hand I was dropping a magnet through both a copper tube and an aluminum tube to observe that almost eerie weird effect of watching the magnet slowly wiggle down through the tube.   Both copper and aluminum both had about the same effect.  I think it would put a lot of drag on the moving magnets unless you put in some material to keep them well away from the aluminum. 

[crazycut06]

Hi DTB,
You can do a half track test first to minimize work and cost, see if it will run on curve, if it does, then construction of a whole scale will follow...
Regards
Cc