Knex 4 Speed Manual Transmission With 3D Printed Gears

by tpace3 in Workshop > 3D Printing

2425 Views, 2 Favorites, 0 Comments

Knex 4 Speed Manual Transmission With 3D Printed Gears

temp_1877277806.jpg
temp_-1777967916.jpg
temp_570006737.jpg
temp_-756462449.jpg
temp_673807826.jpg
temp_-208993881.jpg
temp_-2032449980.jpg
temp_-1474850310.jpg
I found a few files online for 3D printed Knex gears because, I was limited to only 3 speeds without using the largest gear; I wanted something compact.
After tinkering with this off and on for 2 months, I think I've got it how I want it.

It features:
+4 non-sequential​ gears
+Smooth shifting
+Achieves the high end and low end of the gear set
+Compact
+Has a lever for precise gear alignment.
+Able to fit the bulky 2-speed motor

With this post I'm also issuing a challenge. I was not able to achieve the low-geared(big red gear to small tan gear) side of the 3D printed gears' mesh. This means this gear set has a possibility of more than 4 gears, however spacing is an issue. Please repost any modifications or uses for this design and if you are able to add gears.