4 Stroke Flathead Engine

prusaprinters

<p>A<strong> </strong>flathead engine, also known as a sidevalve engine is an internal combustion engine with its valves contained within the engine block, instead of in the cylinder head, as in an overhead valve engine.<br>&nbsp;</p><p><strong>Printing and Assembly</strong><br>The parts should be printed on a smooth build plate, not textured.<br>If possible, avoid elephant foot.</p><p>I printed the model on a PRUSA MINI, with PLA+ filament, layer height 0.15 mm.&nbsp;<br>I use Hard Plastic Glue where necessary.</p><p>For assembled and exploded views, use .stl files 00… 01... 02… 03… (do not print).<br>Printing and assembly in alphabetical order (A1 → J1).&nbsp;<br>Printing tips are available for many parts.</p><p>Dimensions: &nbsp;89 x 98 x 149 mm.<br>Weight: &nbsp;0.14 kg.<br><br><br><strong>Metal parts</strong><br>To join the cylinder to the crankcase, two metal 70 mm M5 threaded rods are needed, and two M5 nuts .<br>Two coil springs are needed for the valves, 10 mm width x 15 mm height. Wire thickness 0.6 or 0.7 mm (AliExpress).<br>&nbsp;</p><p><strong>Updates</strong><br><i>Update 24-2-2022 &nbsp;“G2-Carburetor.stl” is added, as an alternative for “G1-Manifold.stl”.</i><br><i>Update 7-3-2022: A matching 2 speed gearbox you can find here: </i><a href="https://www.prusaprinters.org/prints/144943-constant-mesh-two-speed-gearbox">Constant Mesh Two Speed Gearbox by Bootjevaarder | Download free STL model | PrusaPrinters</a><br>&nbsp;</p>