#294 - 20110918 - Muller motor build #2, PWM on sale
Muller Motor prototype build #2 begins. PWMS are available for sale.
There are several very significant changes coming to the second prototype I am building. in no particular order...
1) Ferrite cores will be replaced by nano particle magnetite, bound with slow setting epoxy under a vacuum and magnetically trained with neodymium magnets.
2) New new coils will be wound using #22ga as opposed to #20ga for more turns (shooting for roughly 400) and be slightly larger.
3) The new cores will only be as long as or just slightly longer than the coils so that the biasing magnets can permeate through to the other side more effectively.
4) I did a test using 1 drive coil and 8 gen to compare efficiency. It lost about 30-40% over 2/7. With this in mind Hydrtec is modifying the sketch for me to provide 3 separate pulse-trains and I will be testing 3 drive / 6 gen to compare in the other direction.
5) Use of Garolite (XX) instead of Lexan for the rotor and frame.
6) 3/8" x 7" precision hardened steel rotor axle.
7) Rotor mounted to axle with precision flanges (No wobble).
8) Needle bearings instead of ball (No wobble, low friction).
9) Threaded bulkhead fittings to independently adjust the stator pole gaps to the rotor.
Also, for those of you who have been asking, PWMS are now back in stock. Please visit http://alt-nrg.org/store.html
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