This floorball thrower was used in our winning robot in the 2019 Robot Uprising: Artificial Invaders robotics competition in Helsinki.

The motors we chose seem to be overkill and we ended up running them at a very low rpm.

We recommend printing the parts with several outer perimiters and operating the device with caution since it's potentially dangerous if something breaks off while the wheels are spinning or if it's operated carelessly.

Feel free to modify this design. You can download the cad file here:
https://a360.co/2Rrg0O5

If you're interested in the robotics competition, you can view a recording of it in Twitch:
https://www.twitch.tv/robotuprisinghq/videos

Our robot in action:
https://youtu.be/9j5Y81g_6IE

An explosion view of the cad:
https://youtu.be/3SmPl2oRU_8

Part list

• 2x Turnigy D3536/9
• 2x 30A esc
• 2x 16 mm bearings
• 4x m3 50 mm countersunk screw
• window insulation foam tape
• hockey tape (wrapped on top of the foam tape for a good grip)
• 18x m6 screws (as weights on the outer rim of the wheels)
• m3 screws and nuts