Hello,
Team 663, the Power Sharks, presents our 2024 Robot, Hammerhead.
It is based on the 2024 Unqualified Quokkas’ Robot in 3 Days design.
What makes this robot unique is an intake-shooter that is wider than the game piece to make it easier to intake (albeit harder to shoot accurately), and sliding-contact 8020 extending climbers as a robust and durable climber design that supports side by side buddy climbing on the chain.
To answer some burning questions:
No, we did not compensate for the reversal of direction of the Coriolis Effect when we applied a design from the southern hemisphere in the norther hemisphere (although we did use Grapple Robotics lasers for game piece detection, perhaps the use of this southern hemisphere product corrected for the Coriolis Effect )
Yes, we used 8020 instead of box tube in many places, the weight was not an issue for this design and we have worked out how to make very rigid connections with 8020 and through-bolts. The frame robustness was very good.
What we did learn this year was that 7075 Aluminum Hex stock is much stronger than the 6000 series churro tubing. The large span of our intake took some hits and the churro tubing we used to save weight yielded very quickly. 7075 hex was field-replaced at competition and it did much better due to having more material and having a much higher yield strength. At competition we also saw that some teams had Quokka style robots with the intake inside the frame (we didn’t think of that 
)
We are a huge fan of 8020 linear motion products, we have used them on elevators since 2015 and have been very pleased with the reliability and robustness. We used #35 chain and 8020 slides for the climbers this year and were very happy with the results. Using through-bolts on the load path is critical however, as the loads of climbing can cause slide-nut style connections to slip.
Sincerely,
Team 663, The Power Sharks