4146 Sabercat Robotics Reveal "Scorpio" and Build Season Recap

[Saberbot]

After a week of rest, I am happy to present to you all 4146's second robot, "Scorpio"

We decided that we wanted to "go big or go home" this year rather than KISSing for our "Sophomore" season. We're excited to see whether or not this was a wise decision.

Here are the numbers:

Drivetrain

• 4 CIMS in KOP Toughbox Mini's-26:28 chain reduction
• Custom 6061-T6 Welded Frame
• 6WD Drop Center with 6" AM HiGrip Wheels
• Custom Drive code with ultra-responsive "mechanical dead-band" removal

Shooter

• 2 BAG Motors 1:1/3:1 Versaplanetaries (Thanks Spectrum!)
• 2x2-7/8" Banebots Wheels
• Vex Conveyor with Gravity-Fed Hopper
• Adjustable Angle
• Optimized for Shooting from the Back of the Pyramid
• Capable of "Pyramid Dumping"

Climber

• 3rd Generation system (see below)
• CIM with 75:1 VersaPlanetary Gearbox
• Pneumatic "Clamp" for Safety and Stability
• Ratcheting Pawl Hooks (Saberteeth)
• 30 Second Climbing Time is Our Goal

We ended up redesigning our climber twice throughout the season. Our original design "walked" up the pyramid using an alternating motion with two arms of pawl hooks powered by pneumatic cylinders. We were unhappy with the instability and jerkiness of the alternating motion in the first and second iterations of this design. After our Week 0 event, we realized we needed to make big changes. We ended up designing our new climber on Sunday afternoon before stop build day. After a frantic couple of days, we finally finished our climber at 11:15 on Tuesday night.

During the final week of build season, our core team put in over 80 hours of work outside of school and day-jobs. It was fun. Unfortunately we didn't have time to take too many pictures, here are the best ones I have of the current design.




See you in Phoenix and Vegas!

Week 1-3 Build Log
Build Season Album
Slightly Outdated Walk-through Video