Initial Drivetrain Development (6/23/2026)

I just started my first revisions for my 3D printed RC car. I just spent the last few hours on making the drivetrain. The gears will be fully 3D printed so I decided to use a STLGears.com to make my gears. After some testing, I noticed that the herringbone gear worked the best as it meshed well and dispersed the load better than other types. It took me a while to get the spacing right. The hardest part was meshing the axles together well and ensure that I could print them separately. I ended up reducing the gearing from the motor with a 12:35 and then a 13:33 to get the speeds I need of 40+ mph. I also decided on using M3 Brass Heat Set Inserts to connect all the pieces together.