Saberbot
27-02-2013, 01:09
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.
https://sphotos-a.xx.fbcdn.net/hphotos-ash4/307423_507943492577609_304454913_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/521413_507943589244266_1264528284_n.jpg
See you in Phoenix and Vegas!
Week 1-3 Build Log (https://docs.google.com/document/d/1-cfiIqunFCsAVpm4JKJRz9f2568OwnK5EFDdhg6uztw/edit?usp=sharing)
Build Season Album (https://www.facebook.com/media/set/?set=a.486995818005710.103176.293976650640962&type=1&l=23bd76f2c8)
Slightly Outdated Walk-through Video (http://www.youtube.com/watch?v=-LIyU5-cifk)
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.
https://sphotos-a.xx.fbcdn.net/hphotos-ash4/307423_507943492577609_304454913_n.jpg
https://sphotos-b.xx.fbcdn.net/hphotos-ash3/521413_507943589244266_1264528284_n.jpg
See you in Phoenix and Vegas!
Week 1-3 Build Log (https://docs.google.com/document/d/1-cfiIqunFCsAVpm4JKJRz9f2568OwnK5EFDdhg6uztw/edit?usp=sharing)
Build Season Album (https://www.facebook.com/media/set/?set=a.486995818005710.103176.293976650640962&type=1&l=23bd76f2c8)
Slightly Outdated Walk-through Video (http://www.youtube.com/watch?v=-LIyU5-cifk)