Lenz2 helical turbine
Description
This Is A Helical Version Of Ed Lenz' Lenz2 Turbine Blade. His Homepage Is Here Http://Www.Windstuffnow.Com/Main/Lenz2_Turbine.Htm Dimensions: This Should Give A 120Mm Diameter, 160Mm Height Windmill. 2013-06-09: Hey Look, I Made A Larger One - Http://Www.Thingiverse.Com/Thing:99132 31-5-2013: I Managed To Print The Last Layer Last Week And The Turbine Is Now Spinning In The Wind. I Started Thinking About Making A Larger Version Of This That I Can Still Print On The 200Mm Print Bed. The Larger Version That I Am Working On Is Going To Be Mounted On A Electric Bicycle Brushless 3 Phase Hub Motor Of About 200 Watts. It Will Also Use Aluminium Arms (20×2Mm Flat) Instead Of The Plastic Ones. The New Thing Id Will Follow Later. 18-05-2013: Crud, Broke The Pulley On My 3D Printer, Posted The Picture Of It On A Wooden Stick On The Back Of My Shed. It Only Has 2 Layers Now, 3Rd One Later When I Fix The Printer. 18-05-2013: Just Uploaded A Double Bearing Holder So I Can Mount It On A 44X44Mm Wooden Pole. The Bearings I Am Using Have A 32Mm Outer Diameter. They Are Not Really The Correct Size For A 12Cm Diameter Windmill. I'M Planning A Larger One For Later. The Bearing Holder Doesn'T Print Very Well, Word Of Caution. I'Ve Also Reuploaded The Single Blades For 30 And 40 Degrees Which Now Have A 1 Degree Resolution. Same Thing, Looks Nicer, Takes Longer To Slice. Also Turns Out You Can Print 3 Single Blades And A Hub On A Single 20X20 Bed. When Printing On Scale 1:1 You Can Apparently Print These Without Support Which Makes Them Look A Lot Prettier. Printing A Single Blade At 0.3Mm Height Takes About 1 Hour 45 Minutes Here. Printing 3 At Once With Hub Is About 4 Hours. Seems Like A Good Deal. 16-05-2013: Uploaded A Hex Center Hub To Mount The Single Blades On. I'Ll Probably Add A Hex Nut Cage On It For Easier Assembly. Perhaps Nut Cages On The Blade Mounting Hole Would Make Sense Too. 15-05-2013: I Just Uploaded A New Single Blade With Mounting Hole Which Can Be Mounted On A Central. That Way You Can Mount 3 Of These For A Single 1/3 Rotation (40 Degrees Of 120) 53,3Mm High Helical Form. This Allows For Making A Larger Version(S) With The Limitation That 3D Printers Have In Build Volume. With Repetier Host You Can Easily Scale A Single Blade By A Factor Of 3 To Get A 160Mm High Single Blade. That Would Result In A 480Mm High Windmill! Still Working On The Central Hub, Still Evaluating Cad Programs To Do My Bidding. 14-05-2013: I'Ll Be Adding Seperate Blades With Different Heights And A Hub Carrier So It'S Easier To Print Larger Versions With The Restricted Print Bed Size. Should Have This Done This Week. I Don'T Recommend Printing The Entire Helix With Supports, As These Will Overlap With The Next Blade. (That Won'T Be A Issue With Seperate Blades) The Model Is A Bit Too Complicated For Sketchup, Which It Also Imports Every Dimension Multiplied By 25,4. That Means It Is Doing The Unit Conversion Wrong. That Is A Issue With The Stl Importer For Sketchup. These Stl Files Are Hole Free And Should Go Through Slic3R Without Warnings.
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