weekend Unfortunately i move slower than a snail with my builds, i only get about 1 hour a day if i am lucky and maybe 1 or 2 evenings to work on it. Anyway i am still waiting for the rotor magnets which they put on back order and the hall sensors are shipped from Hong Kong So it will take me some time yet. I made another 3 coils this morning, and i ended up using 2 of my bearings in the rotor, i super glued these in nice and tight, then used a mini CD glued on top, this worked out well as it's hole was just the right size to give my nuts Clearence but enough overlap to hold the bearing in place also, so the bearing wont be coming loose any time soon. Here's the coils details without a core 2.85 Ohm Series resistance 52.08 Ohms impedance at 10kHz with a Q factor of 18.202 827.6 Micro Henrys inductance. I still need to also get my hands on an old computer psu and see if i can get one of the cores to map the B-H curve. PS i work weekends
« Last Edit: 2011-06-09, 12:16:40 by Peterae »
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