![]() ![]() (Support material is recommended for this part) Main Shifter Body is printed standing upright, and with relatively high wall count and infill percentage, as the top section is under quite a bit of force when you smash through gears, particularly while in an aggressive race.I chose PLA and have had no issues with long term use. In total, print time will be about 1.5 days, and require around 500 grams of filament. I have included an image of the ideal print orientation. Their print orientation and required part strength does vary, but is relatively obvious. There are 6 components (2 of which are optional) that are required to be 3D printed. Printing and Assembly Process Part 1: 3D Printing Small hand tools to clean up prints (hobby knife/files etc).Small pliers to assemble the smaller bolts/nuts.Hacksaw/Angle Grinder to cut bolts to length.2x Shifter ball plungers (Ball Spring Loaded Grub Screw - M12x1.75) EBAY LINK.2x Shifter Springs (Spring 1.4mm14mm dia, Length: 40mm ) EBAY LINK.I'm not sure what size I used exactly, around 1mm perhaps, just use common sense. Wire - to wire the arduino to the switches you may choose to solder directly to the switches, or use push on connectors.2x M10x1.5 (Hex Cap head) 30-35mm long bolts (Shift shaft stoppers to set the shift point travel distance) EBAY LINK.2x Small countersink screws for bottom arduino cover EBAY LINK.1x M10x1.5 bolt/stud to affix shift knob to shifter shaft ~65mm long (the head of the bolt needs to be cut off to make a length of all thread, it needs to be 60-70mm of threaded length, exact length depends on your chosen shift knob.) EBAY LINK.1x Shift Knob M10x1.5 thread (Optional - You may choose to use any real shift knob with an appropriate thread, or try 3d print the included STL shift knob if you wish).4x M3 Nylock Nuts (To affix the limit switches) EBAY LINK.4x M3 Washers (To affix the limit switches) EBAY LINK.4x M3 (Hex Cap head) bolts 70mm long (To affix the limit switches) EBAY LINK.1x Micro USB cable (To connect the arduino to your PC, this will depend on your setup, but 2m is probably the minimum length you will want) EBAY LINK.1x Arduino Pro Micro (ATMEGA32U4) EBAY LINK.2x Limit Switches (SPDT V-155-1C25 Short Hinge Roller Lever Control Limit Micro) EBAY LINK.1x Steel/Aluminium 'Pivot Tube' 64mm long 12mm OD with 1.6mm wall thickness -or- M12 bolt 75mm long, and M12 nylock nut, and 2x washers EBAY LINK.1x Pivot Pin & 1x Pivot Cap (Optional - see details on pivot tube below).1x Shift Knob (Optional - I'd recommend you to use any real car shift knob with an M10 x 1.5 thread).4x Switch Spacers (I made these a separate component rather than merging into the main body mostly just for ease of printing.).Components Required 3D Printed Components DIY 3D Printed Racing Sim Sequential Shifter ![]()
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