Nitro Engine Active Cooling Shroud

prusaprinters

<p>I'm currently working on a project I've dubbed µGen, to see if I can make a useful miniature generator out of a nitro RC car engine I bought online.</p> <p>However, because the engine will be sitting still instead of flying through the air or along the ground, overheating quickly became a problem.</p> <p>But I couldn't find anything online to provide cooling whilst the engine was stationary.</p> <p>Fortunately, this is PRECISELY the situation that I bought a 3D printer for.</p> <p>I got brainstorming in Tinkercad and eventually came up with the idea of a clip-on shroud to hold a couple of spare cooling fans I had lying around from another part of the project.</p> <p>The rest is basically history.</p> <h3>Print Settings</h3> <p><strong>Printer Brand:</strong></p> <p>Creality</p> <p class="detail-setting printer"><strong>Printer: </strong> <div><p>Ender 3</p></div> <p><strong>Rafts:</strong></p> <p>Doesn't Matter</p> <p class="detail-setting supports"><strong>Supports: </strong> <div><p>Yes</p></div> <p><strong>Resolution:</strong></p> <p>0.2MM</p> <p class="detail-setting infill"><strong>Infill: </strong> <div><p>60%</p></div> <p><strong>Filament:</strong> Overture PETG Clear</p> <p><br/> <p class="detail-setting notes"><strong>Notes: </strong></p> </p><div><p>Because this is literally mounted to an engine, it's pretty much required to print this in a heat-resistant filament, and fully test the engine to its limits under close supervision to ensure the shroud will not melt or burn.</p> It's recommended to only enable supports for the overhanging fan mount. You can do this in Cura by selecting Support Placement&gt;Touching Build Plate. <p>I've discovered in my PLA test prints that I can just about scrape by without supports in the holes for the fans, and that if I DO use supports there, I end up breaking the thin walls before I remove the supports.</p> <p>I've also included a "Generic" logo-free version in case you want to emboss your own text or logo into the side. It would be appreciated if you posted a Make or gave me credit, though.</p> <p>This design is optimized for the SH Engines PT-21-P3, available at this non-affiliate link: https://smile.amazon.com/gp/product/B081Q94JS3</p> <p>However, it should still clip on to any engine with a round heatsink that has a diameter of no less than 55mm at any point, and a height of no less than 40mm.</p> <p>It fits two high-speed 30mm fans. You'll typically find high-speed, high-flow 30mm fans by looking for "RC Cooling Fan".</p> <p>And, for the record, the project's name is pronounced "Mugen" or "Microgen".</p> </div></p></p></p> Category: R/C Vehicles