Frame

When construction your frame, you'll need

1) 2x1s for the base (Qty - 4)

2) Bellypan (Qty - 1)

3) MountingDrivetrain tubesRails (Qty - 1 or 2)

Note - Wall thickness of .100" or thicker = thick wall (good for chassis due to durability and high impact resistance)

Bellypan

• Has small holes in certain areas known as grommet holes to allow for electrical components to mount, and has holes along the perimeter for mounting onto chassis. All bellypans have a cut extrusion pattern along the surface which saves weight and makes it look nice, which is known as pocketing
  • • Laser cut by sponsors
    • Typically 1/16" to 1/4" in thickness
    • Thicker bellypans have smoother driving due to lower center of gravity (CG)

 

MountingDrivetrain TubesRails

• MountingDrivetrain rails are mounting tubes which are integrated into the frame design for structural support and for mounting separate subsystems like shooters, intakes, climbers, etc.
  

Design Considerations

• Place battery first when designing drivetrain as it is the heaviest component, so you can take COMCG into account (important for deciding how smooth your robot can drive)
• Tungsten sheets are heavy and good for COM, but very expensive (Insert mcmaster carr tungsten sheet price pic)
  
• When designing your drivebase, your main goal should be maximizing COMCG while maintaining efficient mass to incorporate toherother subsystems in the future
  
• AccelerationTungsten issheets prioritizedare in games which require lots of change of directionheavy and a needgood for aCG, fastbut topspeedVERY accumulation
expensive 
• Tall robots which have a need for speed require heavier drivebases to maintain balance
• If geared too tall, it means it takes too long to reach topspeed
  
  • Robots geared too high will do better with pushing (kinda like torque) while bots geared for top speed won't (Speed is inverse of torque)