Constant Mesh Two Speed Gearbox
Print Profile(1)
Description
In this type of gearbox, all the gears of the main shaft are in constant mesh with the corresponding gears of the countershaft. A sliding dog clutch is provided on the main shaft.
Gear ratios 0.75, 1.33 and neutral.
This model was designed in Tinkercad.
3-speed gearbox with reverse gear : Constant Mesh 3 Speed Gearbox with Reverse Gear by Bootjevaarder | Download free STL model | Printables.com
Printing and Assembly
The parts should be printed on a smooth build plate, not textured.
If possible, avoid elephant foot.
I printed the model on a PRUSA MINI, with PLA+ filament, layer height 0.15 mm.
I use Hard Plastic Glue where necessary.
For assembled and exploded views, use .stl files A0… X0… (do not print).
Printing and assembly in alphabetical order (A1 → X1).
Choise between Spur and Herringbone gears (A4 B2).
Dimensions: 95 x 63 x 101 mm.
Weight: 0.1 kg.
Join gearbox to “4 Stroke Flathead Engine”
Print parts X1 → X5.
4 Stroke Flathead Engine v1.0 by Bootjevaarder - MakerWorld
To couple the gearbox to the engine, the “Cranked Handle” of the engine must be removed.
The engine, coupling bracket and gearbox click into the “X1-Sled”.
Important: Part “X2-Coupling Bracket” must be assembled in the correct orientation (ARROW).
Operation
Use the cranked handle to rotate the gearbox / engine.
To couple / uncouple the gearbox from the engine, use “X5-Coupling Selector Fork”.
For shifting gears, use “A3-Selector Fork”.
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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