Sequential Shifter Simracing (no Electronics) by davebrave

Last crawled date: 3 years ago

This is my "heavy duty" sequential shifter for simracing. It's based on a ball bearing that is pushed against two microswitches. I have not included electronics in the design but you can use an Arduino Micro pro (with USB support) or even use an old gamepad and solder the two microswitches directly to the board.
There are two diferent levers for a shorter or longer grip.
Materials:
1x 6000 ZZ ball bearing
2x 626 zz ball bearing (optional)
2x 55mm springs
2x 20mm microswitch on-off 3-pin
Screws, nuts and washers:
m4 2x 20mm
m5 2x 35mm, 5x 45mm
m6 2x 35mm, 2x45, 1x55mm
Print:
20% infill
0.2 and 4 wall lines.
Although it's not crucial, you should have the XY expansion properly adjusted so holes have the right size.
Assembly:
It should be quite straight forward:
You start with left_base, screw both switch holders using m4 screws and nuts. Solder the cables before installing the switches. They are just pushed into the holder.
Screw the right_base and insert the m5 55mm screw that is going to be used for the springs.
Insert the 2 ball bearings into the lever. You can choose either short or longer lever. Alternatively, you can use the dummy bearings instead, but I haven't tried myself. Put a m6 screw through the base and the lever.
The push arm is quite simple but pay attention to the springs, they both form a "V" on each side, so you mount the springs in different angles but sharing the same base point. Look at the assembly pictures for more clarification.
Then you can use the remaining holes to attach the shifter to your rig using m8 or m6 depending on your needs.
Enjoy!