| Most viewed - WhiPMag & OC MPMM |
Stator Magnet Equitorials with Glare224 viewsFirst picture. Next has better quality
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Center Disc224 viewsCenter Disc for the Tri-Layer Rotor with eight magnets are in place.
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Rotor parts220 viewsHere we have the same rotor parts with the bearings removed and the magnets between them. Also in the pic are the R834 stator mags and magnetic viewing film.
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Rotor Lissajous Failure215 views180 degree sensor settings. Poor connection allowed AC to be introduced. Included it here because I found the interaction interesting.
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Stator Magnet Equitorials212 viewsMagnet Equitorials visible using Magnetic Film. The lighter lines indicate regions where flux is equal density between North and South surfaces. Notice the curvature of individual equators toward the overall equator between magnets 3 & 4 from the left. There is a threaded nut between magnets 1 & 2.
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Rotor in full corotation (AGW)196 viewsHere is my rotor running with a single lower bearing somewhere between 1300 and 1800 RPM. The stator is in corotation (AGW sync) at 4 times that speed. The spindle is mounted directly to a 3/4" thick formica covered particle board shelf that was drilled and tapped. Eventually this will be moved to my Acrylic base which is 12" x 13.5" x 1" thick. Hopefully I can find a nice spindle like Al's by then.
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Rotor Parts195 viewsHere we see the Top and Bottom layers for the Tri-Layer rotor with bearings inserted. Between the two discs is the spindle bolt.
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Rotor Lissajous181 viewsRotor speed > 2000 RPM. Lobe differentials due to misalignment of rotor magnets. All eight poles are visible, 4 for each polarity.
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Rotor Lissajous #2176 viewsSimilar to the first but closer snapshot. Again the sensors are located 90 degrees apart.
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Rotor Construction172 viewsThis is the Jig I used to hand craft all 3 Discs for the Tri-Layer rotor. If you look carefully on the right you will see a small drill guide embedded in the wood. The distance from that guide and the metal center pin on the far right is 144mm. On the left we see the Center Disc with end holes prep'd for magnet slots. Orientation for these was located quite precisely using the relief grid integral to the material. Slots are on a 5" BCD 1/4" Ovals with 1/2" end center diameters.
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Rotor Pulse Train140 viewsAs you can see the magnets I changed are in Y+ alternatively such that each is 180 degrees from its duplicate. The existing magnets are in the Y- and are relatively consistant.
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Rotor Bearings Weight130 viewsWe see here that two of the Rotor bearings weigh in at 14g so they are 7g each
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