Lenz2 helical turbine

thingiverse

Ed Lenz's helical version of a Lenz2 turbine blade has been redesigned, resulting in a windmill with 120mm diameter and 160mm height. In June 2013, an even larger version was posted online. The creator managed to print the last layer of this turbine in late May 2013 and it began spinning in the wind. He is currently working on a larger version that can still be printed on his 200mm print bed, which will use aluminum arms instead of plastic ones. This version will be mounted on an electric bicycle brushless 3-phase hub motor of about 200 watts. A new thing will follow soon. In May 2013, the creator broke a pulley on his 3D printer but managed to print a double bearing holder for mounting it on a wooden pole. He also reuploaded single blades with 1-degree resolution and discovered that three single blades and a hub can be printed on a 20x20 bed without support, resulting in a prettier design. A hex center hub was uploaded to mount the single blades, and separate blades with different heights were added for easier printing of larger versions. The STL files are hole-free and should be compatible with Slic3r software. To print the single blade, three are required to make a single level, which must be mounted on a central hub using M3 screws and nuts. Instructions for assembling layers using super glue are also provided. The entire helix model is available for modification, allowing users to print at 1/2 height with a 60-degree rotation.