This week, we worked on experimental concepts, the rollguard, and solidifying the 2 vs. 1 / 2 vs .2 strategy
The main experimental concept we worked on was an elastic drivetrain booster. The booster was designed to speed up and strengthen the drivetrain through elastic. Unlike other elastic assists, the booster was developed to disengage. This allows the drivetrain to have the power boost without the side effect of fighting elastic once power runs out.
The biggest challenge of the system is deploying it without motors at choice. We wanted to use the system for straight line sprints. However, we didn't want this to deploy until we try going from the hanging zone to the goal zone to maximize driver friendliness. Other complications arose such as having enough downward force to prevent slipping and having the flexibility to go over the bump.
Another experimental concept we toyed with was a winch and elastic lift system. Elastic force would raise the lift while a motor powered winch would pull the system down. This system should have enough torque to high hang the robot with its current weight. The tether was designed to be placed 10 inches away, giving the robot a natural 10:1 gear ratio with 3 motors. Also, because force is applied through a line, force isn't wasted through angles when the arm is perpendicular to the ground.
The shooter was taken apart to make a better roll guard. We've been tossing around ideas based around wheels, siphoning power from the lift, over extending linear slides, and carabineers. However, the lack of materials is increasing the complexity and decreasing performance significantly.
Due to security reasons, an executive decision has been made to limit the details on our strategy. These are the scenarios we have considered and we've developed a way to combat these. Our strategy follows a single path which branches out based on how our opponent scores and plays.
-2vs1. 1 opponent plays defense, 1 opponent scores
-2vs1. 2 offense robots with focus on buckies
-2vs1. Opposing alliance scores buckies and larges well
A few members branched out and did research on community outreach projects. One project is holding demonstrations at an elementary school and another is holding a demonstration at a hospital. We are currently waiting for a response for both of these activities.
The Facebook page is also planning to have a featured robot of the week. This will help advertise your designs and show off your team's skills. If you would like your robot to be featured, message DracoTheDragon on the vexforums a description, a photo, and finally, like the facebook page. If you want us to post a video, give the facebook page a positive recommendation.
Elastic Drivetrain Booster