Main Gear Box, Helicopter driven by 2-Engines

cults3d

Main Gear Box for Helicopter Driven by Two Engines has Complex Gear Train Inside To Understand This Mechanism, I Designed an Internal Visible Model with Many Different Designs for Each Actual Helicopter, Therefore This Model Is Just a Sample. The Features of Main Gear Box Are: Two-Engine Inputs One-Tail Take-Off Output Moved to the Opposite Side to Clarify Three-Stage Reduction Including One-Planetary Gear and Two-Stage Reduction Plus One-Stage Increase Note: Gear Types Used in This Model Have Been Changed Due to Ease of Designing and Printing. Bevel Gears Are Replaced with Spur Gears and Face Gears, Helical Gears Are Replaced with Spur Gears. Download Files Include: Stl Files Images: Parts Breakdown and Sub-Assembly Photos for Assembly Aid Excel File: Parts List with Related Hardware Purchase Parts Information: Bearings; No Metal Ball or Roller Bearing Is Used, Then Some Grease for Plastic Is Recommended for Lubrication. Abs Tube See Parts List. Screws and Etc.: Micro Screws M1.4x3.5L - 5 Ea - Direct Screw-In to 1mm Diameter Hole (No Nut) Screws M2 x 6l - 20 Ea, See Parts List Screw M2 X 25l and Nut + Some Tube for Turning Handle (Optional) Printing Parameters Recommended: Gears: 0.2mm Layer Height, 100% Infill Bodies: 0.2mm Layer Height, 40% Above Infill (for Threads) Raft and Support: Depending on Your Experience Assembly Points Require Standard Skill Such as Drilling, Tapping, Filing, Tightening, Painting, and Gluing Etc. For Gears, Deburring Is Very Important for Smooth Rotation. If You Do Not Give Up to Finish the Gear Teeth, Then You Can Get a Smooth Rotational Main Gear Box Model. Total Net Print Time: Approximately 28 Hours Estimated as Case of Pla, 0.4mm Nozzle, 0.2mm Layer Height, 40% Infill and No Raft and Support. Note: When at Actual Print, Each Parameter Should Be Adjusted by Your Experience. Update (September 15, 2017) New File (Body-Mid901.stl) and Related Photos Are Added to Return "Tail Take-Off Output" at the Same Position.