This 3-Phase stator has 12 coils with 36-turns each. It is designed to be used with 16 magnets on
an 8-inch diameter steel rotor on one side and a blank steel rotor on the other side, or more power,
use 32 magnets, 16-per-side. You can use 2" x 1/2" block magnets (various thicknesses and strengths
are available), including our 1/8" thick ones MAGSET-1, or the wedge magnets offered by
windstuffnow.com.

The AFPMAS-1 stator is only 1/16-inch thick, and can be wired in either the star or delta configurations. For higher voltage/RPM or lower resistance & higher current, two or more AFPMAS-1 stators can be stacked together, and wired in any combination of star/delta and/or series/parallel. One AFPMAS-1 can be rotated with respect to the other so that when wiring in series, the connections will not short together. Rotate by three coils in order to have the same phase, or rotate only one coil angle and wire to the appropriate coils on the other stator that line up. Typically, customers have used 2, 4, and even 8 AFPMAS-1 stators sandwiched together as a unit between two rotors with a total of 32 magnets. A stack of 8 is only 1/2-inch thick. Contact us if you would like us to make the multiple AFPMAS-1 connections for you in order to make a more powerful stator unit.

We have a large stock of the 2" x 1/2" x 1/8" magnets that we can offer at good prices. These
are the same magnets offered by K&J Magnetics. See them at kjmagnetics.com  or our
MAGSET-1 page. We sell them in multiples of 16 and the total price per set will be much less
than the they will cost you from K&J. Note these magnets have the highest pull force we
could find in this size; Very strong! We have seen some 2" x 1/2" x 1/2-inch thick magnets,
which presumably have up to 4 times the magnetic flux, and if so, 4 times the power output.
Contact us if you want some alternator power tables to estimate what kind of power you can
expect with various configurations.

We also have the 8-inch steel rotors for making an alternator, ROTORDISK-1. Our steel rotors have
optional threaded holes for inserting three standard 1/4-20 screws for use as jack screws,
ROTORDISK-1TH. You will find it very difficult to assemble or disassemble a dual-rotor alternator
without threaded holes and jack screws. In fact, the magnets are so powerful, you will probably destroy
things if you try to assemble a dual-rotor alternator without jack screws. For dual-rotor sets, one has the
threaded holes, and the other doesn't, because the jackscrews drive against the rotor without the holes,
see ROTORSET-1. If you are using only one rotor, the jack-screws are not needed, and you can buy
the rotor without the threaded holes. Keep in mind that the most cost-effective alternator, in terms of
power and efficiency per dollar, will have two rotors instead of one.

Our rotors also have a machined 1/2-inch keyed center hole. This is the best way to be sure the rotors
can be mounted straight and tight on the shaft. If a larger shaft is needed, you can bore out the hole.

You can also get plain 8-inch steel rotors, as well as lots of other handy stuff and great information
about alternator construction at windstuffnow.com. However, our rotors are cleaner & more
professional looking, we have the keyed center holes, and threaded holes for jack screws, so our
rotors are well worth a few bucks more.

AFPMAS-1 Quantity Pricing: The price shown is for quantity 1. If you enter a larger quantity, and
add to cart, the quantity price will show up in the cart. Prices are limited to quantity currently in stock.

QTY  1  at $49 each
QTY  2  at $44 each
QTY  4  at $39 each
QTY  8  at $34 each
QTY 20 at $29 each
QTY 40 at $24 each