Flat Blade Wind Turbine Hub (6 Blade, 70 Degree Pitch)

thingiverse

My rule is if you download this, you have to be subscribed to my YouTube channel! https://www.youtube.com/watch?v=3LJ35ep8rNE https://www.youtube.com/channel/UCQ9qxInZTJznj3O18qymalQ EDIT 11/17/22: I've found that the hub, as I originally uploaded it, is kind of a nightmare to print, both for adhesion of thin features and angle of printing. To help make it more printer-friendly, I've uploaded another file, called Nervous Propeller (chunky). Everything else should be the same. PROPELLER HUB, uploaded 11/15/2022 Recommended to print with high-ish infill and at least 3 walls. Lower layer height is recommended, as this is an aggressive-angle print. This propeller has two mounting holes, for each of the flat blades, intended for use with plywood sheets or some other flat-blade material. One side of the fork is countersunk for M3 bolts, and the other side is a ~5mm hole to fit those M3 knurled brass inserts. I wanted to try these on this hub because I usually use M3 nuts, and it's a pain trying to keep track of 24 little pieces. These mounting holes are 15mm from each other, and 12.5mm away from the edge, and can accommodate materials <3mm in width. The hub's shaft is made for a 5/16 bolt. I like using this type of design because I can replace blades of different lengths and widths to see what works best.