"Johnny" - the FVC team 13 (Unlimited) Robot designs

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Six-Wheel Chassis

Center wheels shifted slightly down for ease in turning

Alternate central geartrains

Alternate gear ratios, torque vs. speed

Prototype six-wheel chassis

Not the final, but getting there

"Johnny" in profile

Six-wheel, four-motor chassis with capping arm

"Johnny"

Carrying the capping ball

"Johnny"

Approach the fixed goal

"Johnny"

Capping

"Johnny"

Chassis overview

"Johnny"

Original arm gearing

"Johnny"

Capping arm

"Johnny"

Arm elbow detail

"Johnny"

Arm elbow detail

The six-wheel chassis designs off-sets the center pair down slightly, so that only 4 wheels contact the ground at one time.  It pivots through turns more easily, and still has the resistance of the longer wheelbase toward tipping.  Unfortunately, it also uses 5 large gears on a side, plus (optionally) two more in the center gear train, out of only twelve allowed.

Our six-wheel, four motor chassis is now officially named "Johnny", in honor of Johnny Damon of the Red Sox.  An arm has been devised to enable a reliable uncapping of the mobile goal and recapping of the fixed goal.  Many minor changes to fine-tune the robot have been made in the period since the WPI Scrimmage.  This robot is run in competition by FIRST Vex Team 13, Sharon Eagle Robotics Unlimited.

The robot has gearing on each side to keep wheels synchronized together, and two motors on the elbow of the arm to allow sufficient torque for capping the mobile and stationary goals. 

 


Last modified: 12/05/14     All Rights Reserved, 2013 by Team Unlimited [FTC 0001]