Modified Vertical Axis Wind Turbine (1/4" Motor Shaft)

Modified Vertical Axis Wind Turbine (1/4" Motor Shaft)

cults3d

Intro I have a motor that I wanted to test with Hooptey's Vertical Axis Wind Turbine. He was kind enough to post the SLDPART's so I went to work and modified both the hub and the arms. The changes are: Attachment screws changed to 3.12mm locking Torx screws (http://www.mcmaster.com/#99397A626) on both arms and hub Hub gear removed and modified to have 1/2" shaft instead. Shaft locked in by 1/4"-20 x 1/4" coarse thumbscrew. Rain protection built into hub, and optional rain cover Motor mount added ___ Testing Testing began with the finishing of version 6. It was a massive failure. Not only was wind not very strong, but I did not have blades required (the blinds). Instead I cut out cardboard blades. When tested with a leaf blower it became clear that there is a specific angle that must be caught. The arms will have to be changed. Another issue could be I need gearing to turn the motor, but there is so little force needed it might not be needed. After a little research, it would make sense to do longer blinds, and possibly more arms. Parts List 3.12mm locking Torx screws (http://www.mcmaster.com/#99397A626) NOTE: These are what I have on hand, and this might change! Motor:2” body diameter x 3-3/4” long 1/4” shaft diameter 140 volt 3700 RPM Four (4) x 1/4"-20 x 1/4" coarse thumbscrew Change List v7Rain cover eliminated Second tier added, held together by 1/2" garden poll / screw Rear Motor Mount changed slightly Hub Top added. Used for second tier. Main Hub Extender added. v6: Mount added to Rear Motor Mount v5:Rain cover added Hole diameter for motor mounts modified Mount polls made circular, one screw eliminated Rear Motor Mount wire hole added v4:Motor mounts added Minor mods to thumbscrew hole diameter v3 (optional): Hub rain cover added v2:Hub strengthened in middle Thumb screw changed to 1/4"-20x1/4" Arm and hub attachement holes resized for 3.12mm screws (now wider!) Shaft widened a bit to counter ABS shrinkage Infill recommendation changed to 50% v1: Initial release, unprinted

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