Permanent Magnet Alternators PMA Permanent wind turbine mills Magnet Alternator Permanent Magnet generator wind power PMG wind turbine wind turbines This Auction Is For A Used 48 volt PMA only! (As shown in ad photo to the left) Colors vary. These PMA's have only been used for two or three weeks for testing our new propellers and testing new prototype wind turbine designs. They are tested and work great. Some could be painted various colors, Green, Silver or Black. HIGH QUALITY ITEM - HAND MADE IN THE - U.S.A. Design to be lightweight and compact and pound for pound this unit is the most powerful in the world 16,000 Watts / 180 amps at 18,000 RPM and it only weighs 10 pounds. America ingenuity, its a Delco design! SEE HOW THIS PMA WORKS ON OUR BLADES - See all demo videos below! Blades and pole etc not included. Auction is for PMA only! - The microphone in this video was placed only about 12" away from the blades so you can clearly "hear" the power and spin speed. At distance these blades are surprisingly quiet and non-offensive to be around. Very neighbor friendly. These PMA's have special fine wire that is hand turned on to the stator cores. It is VERY important to remember this when comparing to other PMA's containing standard automotive wire that is incapable of making high voltages!ALL NEW Slant-Core PLUS+ Design Now With 20% More Power! Our Magnets are on an angle to prevent cogging! Ours are perfect, brand new coils and stator coil frame stacks with seamless laminations. Great workmanship! Make sure your rotor is brand NEW and has also been re-balanced on adynamic rotor balancing machine or your PMA will NOT spin smoothly!!! Our PMA's are NOT re-built units starting with junk yard alternator parts (Including the rotor pole shoes and stator coil stacks) Our PMA's are built from the ground up using only 100% ALL new parts! (Including the rotor pole shoes and stator coil stacks) Our NEW rotor poles are balanced to within .002 grams for SMOOOOOTH rotation! MADE IN THE USA! Not a cheap import or copy. Get the original Slant-Core PLUS+ Design. ZERO COGGING Slant-Core PLUS+ PMA's have fantastic low speed start up! Now featuring 14 magnetic poles for achieving an amazing 20% power level increase! Our Magnets are on an angle to prevent cogging!Can be turned at speeds over 18,000 RPM By Hornet Power Systems Use these powerful permanent magnet alternators (PMA's) to make cheap electricity with wind turbines Stop wasting up to 50% of your power energizing the coil of standard brush type alternators. Get a real PMA! Permanent magnet alternators are by no means standard "Automotive" alternators containing brushes and electro-magnetic coils. A PMA does not waste power by having to continuously create an energy intensive magnetic field. We sell only highly efficient - long lasting true permanent magnet alternators! #SCS series - Slant-Core PLUS+ PMA Technology! Our "Slant-Core PLUS+" PMA rotor is studded with powerful 42H Neodymium super magnets arranged in a superbly balanced and perfectly phase biassing configuration. This new design feature offers high power with no appreciable cogging. All magnets are all slotted into multi-layered steel plates for maximizing and sharing the rear field forces boosting the overall core power by 20% "The SCS series PMA' are the most versatile PMA's we have ever built" LOTS OF LOW END POWER GENERATION ABILITY!!!! Perfect for building simple, inexpensive and dependable wind turbines. A put-up and forget design! Expect decades of dependable service life. Bi-rotational. Makes power when turned in either direction. Note: Clockwise is the preferred direction since the nut tends to stay on and it cools better! All weather rated. Rain, ice and weather proof electronics. 17MM hardened shaft. Heavy Duty coils and diodes. Light weight aluminum body. Bearings rated for 115,000 hours + 100% biassed magnetic field spread. D.C. output. Includes built in rectifier. 7 magnets and 7 slave poles for 14 poles! Powerful #42H Neodymium magnets in rotor. Nice and smooth turning for a PMA this powerful! Warranty - 90 days parts and labor FOB Lancaster, CA #SCS PLUS+ SERIES PMA's - ALL PMA's include only the spacers, shaft nut and lock washer. BASIC SPECIFICATIONS SHEET OF ALL SCS SERIES PMA's (This auction is only for the voltage mentioned in the ad header for THIS auction!!!) #SCS12 - (Used for HT12SCS) #SCS24 - (Used for HT24SCS) #SCS48 - (Used for HT48SCS) This PMA works great with Hornet blades!!! See demo video below- The microphone in this video was placed only about 12" away from the blades so you can clearly "hear" the power and spin speed. At distance these blades are surprisingly quiet and non-offensive to be around. Very neighbor friendly. -------------------------------------------------------------------------------------------------------------------------- SCS series PMA's weigh 10 LBS. - Size 8" X 7" X 7" WARNING!! Make sure you connect a PMA to the correct battery polarity. Positive PMA to positive battery terminal and negative PMA to negative battery terminal. IF you reverse the connections you will burn out your PMA as the power rushes past the blocking diodes and melts your coils!!! NOTICE FOR ANY OF YOU A.E. NOVICES OUT THERE: A battery is basically a BIG capacitor in electronic terms. Once your batteries are fully charged you must then stop putting any additional power into it! WIND TURBINE DESIGNERS HINT - When picking out a PMA the better choice is the higher voltage model. You don't want to be under powered. You MUST always exceed the batteries voltage to produce ANY net gain. TECH NOTES: Taking apart a PMA the right way. 1. Remove the 4 housing bolts and pull the front housing off OVER the shaft. Never pull the rear housing off first!!!! If it is jammed or rusted use some WD-40 on the shaft and alternately tap the mounting wings with a hammer while applying pressure to the shaft with your thumb so that the stator and it's delicate wiring harness is kept in place. NOTE: If the shaft is scored-up badly you may have to sand the shaft down to it's original 17mm size to get the front housing off. 2. Now grab the exposed rotor core shaft and pull it out WHILE holding down the stator ring with your index finger and thumb. This will take LOTS of strength!!!!! If you fail to hold the stator in place the core and stator will be extracted together and the wires will be torn off of the stator and this is unrepairable! This is a tricky maneuver and usually takes some experience and lots of muscle!!!!!!! 3. Once the rotor core has been successfully extracted the rectifier connections are exposed and you may now unfasten the three wire nuts to safely remove the stator coil. (To reassemble simply reverse procedure) Warranties will be void on any PMA that is opened by a customer. Any PMA experimentation and examination is at your own risk. CLICK DRAWING TO ENLARGE WARNING; High voltage PMA's and battery banks can cause lethal electric shock! PLEASE NOTE: Our model numbers have nothing to do with voltages, they are just model numbers. POWER CURVES NOTE: These Ratings are ONLY to be used as a basic guide line. Voltages are usually much higher than shown so expect more. How readings are derived. Since we do not know the torque of the driver this data is given in absolute separate peaks and never as an absolute dyad reading. Amps are read as a short in the circuit closed condition. Then we read Volts in the circuit open condition. These charts do not reflect working conditions only the absolute PEAK separate readings. An engineer can then use this data and extrapolate actual power by adding in actual Horsepower V. RPM and the torque properties of the particular driver in the application that the PMA is to be used in. This is the unknown data only the engineer can provide. Simply dividing the peaks by 2 if not enough especially if the driver is weak and prone to lag under loads. Figuring this out is not for amateurs or beginners! The engineer can then decide on Voltage V. Amperage to be the dominant target factor based on individual necessity, current draw and the continuous available torque of the driver (source of rotation - engine, turbine etc.) PLEASE NOTE: VOLTAGES - ARE RATED WITH CIRCUIT OPEN - AMPERAGES - ARE RATED WITH CIRCUIT CLOSED- ACTUAL CHARGING VOLTAGES MAY VARY DEPENDING ON YOUR SPECIFIC LOAD. These curves shows the maximum Voltage OR Amperage POTENTIAL but is not showing both SIMULTANEOUSLY!!! Only YOUR specific LOAD can determine the final Wattage. Used on 12 volt wind turbines! Ohms law calculator Used on 24 volt wind turbines! Ohms law calculator Used on 48 volt wind turbines! Ohms law calculator NOTE: These Ratings are ONLY to be used as a basic guide line. Voltages may be higher than shown. Notes From Happy Customers Dear qaz661, I just want to brag about your blades and PMA, I live here on a mountain top in Idaho, and had freezing temps. Then came the high winds, the 12 volt PMA maxed out over 75 volts and the blades held together with wind gusts over 50 MPH. What a great product. I just need a controller that won't smoke with these high wind surges, what do you recommend? Thanks Sonny -ljdk07 eBay Member: brianrlee wrote: You guys are great. By the way I'm very impressed with the scs24 pma it seems to be out preforming the power curve in the ebay ad by quite a bit. Thanks again, Brian