Main Gear Box, Helicopter driven by 2-Engines
Description
Main Gear Box, Helicopter Driven By 2-Engines Main Gear Box (Mgb) For Helicopter Driven By 2-Engines Has Complicated Gear Train In Inside. To Understand This Mechanism, I Designed The Internal Visible Model. There Are Many Different Designs For Each Actual Helicopter, Therefore This Model Is Just A Sample. The Features Of Mgb Are; 1. 2-Engine Inputs 2. 1-Tail Take-Off Output (Moved To The Opposite Side To Clarify→See "Update") 3. 3-Stage Reduction (Including 1- Planetary Gear) And 2-Stage Reduction + 1-Stage Increase Note: (1) Gear Types Used In This Model Are Changed Due To Ease Designing And Printing. Bevel Gear → Spur Gear + Face Gear, Helical Gear → Spur Gear (2) Clutch And Accessary Drives Are Omitted At This Time. Download Files Includes; -Files: Stl Files -Images: Parts Breakdown And Sub-Assy Photos For Assembly Aid. -Excel File: Parts List With Related Hardware Purchase Parts Information; -Bearings; No Metal Ball/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 1 Mm 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 (0.4Mm Nozzle Is Used) - 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 - Standard Skill (Such As Drilling, Tapping, Filing, Tightening, Painting And Gluing Etc.) Is Needed And Perseverance Too. - For Gears: Deburring (Removing The Sharp Edges Etc.) Is Very Important For Smooth Rotation. - If You Do Not Give Up To Finish The Gear Teeth, Then You Can Get The Smooth Rotational Mgb Model. - Good Luck!! Total Net Print Time: Approx. 28Hr - (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 (Sep.15,2017) New File (Body-Mid901.Stl) And Related Photos Are Added To Return "Tail Take-Off Output" At The Same Position.
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