The Turbine Tail adapter kit by Soliex, Inc.(since 2009) was designed using DFMA concepts (Design For Manufacture & Assembly). The finished product neatly organizes purchased components into the perfect machine for any application where off-grid power and/or battery storage is needed. The four major components in the kit are manufactured from corrosion resistant 304 SS and 6061-T6 AL with SS hardware and Black Acetal bearings/bushings making it virtually maintenance free.

These are the components that I manufacture/supply at $550 (subject to change):

The Turbine Tail adapter kit supports purpose built PMG's with up to 1600W - 12 to 24 volts, and GM alternators with the 10SI/12SI frame(re-wound with more wire for best results). I have no affiliation with this supplier, that said, these are the Generator, Rotor and Slip Ring components I used and will need to be purchased by you to get any warranties in your name.


The Turbine Tail adapter kit is engineered to use gravity as built-in protection and features a long hinged tail that keeps the rotor disk facing windward until stronger winds force the rotor disc to rotate about the spindle centerline. If the winds are strong enough it will continue to rotate and slowdown the rotor, automatically preventing over-speed damage! - This feature effectively eliminates the need to monitor wind speeds! -

Here's how it works:
Looking from the top, the images below depict the Turbine Tail rotor positions at different wind speeds from left to right. The left image would indicate no wind or low wind conditions, the center at higher speeds and the right image in a fully furled condition.
Here's what I tested and how:
  • 12v - 1.6Kw permanent magnet generator with a 7 blade rotor of 60.5" (1.54m).
  • 12v - .5Kw permanent magnet alternator with a 5 blade rotor of 59" (1.5m).
The graph below shows the results of testing the prototype Turbine Tail with the the rotor/gen combinations listed above. As can be seen they both start making voltage with a wind speed of around 5 MPH and increases in a linear motion until the furling action results in an RPM drop and lower voltage. This exactly what we expect and want in a small turbine at damaging wind speeds.
In these videos of the prototype Turbine Tail you can see how the rotor rotates about the center line of the spindle as it starts to furl in high winds
The schematic below show the basic components needed to complete a system.
Solar Wind Generator