Calculations:

A number of calculations factored into the design of our structure.

Torque Calculations

Range of motion: 120°
Calculated torque: 1.6lbin (lower than expected)

Lifting Arm Calculations - Old Design
Range of motion: 48°


Theoretical Lift Height: 2*3.5in*sin(24%deg) = 2.8in
Actual Lift Height (Maximum): 2.5in


Approximate Lifting Force: 1.6lbin(50/20)/(3.5in) = 1.143lb
Servo power utilized: 1lb/1.143lb = 87.5%


Lifting Arm Calculations - New Design
Range of motion: 48°


Theoretical Lift Height: 2*6in*sin(24%deg) = 4.9in
Actual Lift Height (Maximum): 4.625in


Approximate Lifting Force: 1.6lbin(50/20)/(6in) + (2.8oz*1lb/16oz)*(13in)/(6in) = 1.046lb
Servo power utilized: 1lb/1.046lb = 95.6%