Thrustmaster TMX/T150 steering wheel replacement gear

prusaprinters

<p>Inspiration:</p><ul><li><a href="https://www.thingiverse.com/thing:2754967">https://www.thingiverse.com/thing:2754967</a></li><li><a href="https://www.thingiverse.com/thing:4063945">https://www.thingiverse.com/thing:4063945</a></li></ul><p>I was inspired by the models above, but designed mine from scratch to include the timing wheel and main gear in one piece and the spur gear as a separate piece to simplify printing and minimize the need for supports. I also optimized the contour of the gears compared to the other models.</p><p>&nbsp;</p><p>Print settings:</p><ul><li>0.4mm nozzle</li><li>PLA</li><li>50% fan speed - essential to lower speed to get accuracy on the timing wheel portion</li><li>0.2mm layer height</li><li>3 perimeters</li><li>4 top and bottom layers</li><li>50% gyroid infill</li><li>top-layer ironing optional</li><li>PrusaSlicer 2.5 Arachne profile preferred to minimize gap fill https://github.com/prusa3d/PrusaSlicer/releases/tag/version_2.5.0-alpha3</li><li>infill<ul><li>auto is Ok for larger gear to cover the central hole</li><li>no infill for smaller gear</li></ul></li></ul><p>&nbsp; Post-processing:</p><ul><li>there will likely be tiny filament strings between the fingers of the timing wheel which will affect the optical sensor. You'll have to slice through these strings with a hot exacto knife or razor blade very carefully. If you knock down a finger, you'll have to re-print since timing will be off and racing will suck! Gluing a finger back in place is extremely difficult.</li><li>If the larger gear is too tight on the shaft, you can use a drill bit to ream it out, or aim hot air through it a few seconds to soften it. Do NOT aim hot air at the timing wheel fingers as they will easily flop over.</li><li>superglue the small gear into the larger one</li></ul><p>Recommend upgrading the <a href="https://youtu.be/sHKU8OhduNc?t=380">belt tensioner bearings</a> while you're in there.</p><p>&nbsp;</p><p>Scaling the small gear to somewhere between 99.5-100.5% in may help fitment if your printer is not fully dialed in.</p>