10-05-2020, 08:59 PM

Some maths for anyone who wants to calculate the size of the servo horn.

Diameter = cable pull x (360/(servo angle x π))

Explanation of the calculation in more detail.

The cable pull becomes a percentage of the servo horns circumference, which is (available servo angle / 360). We want the inverse of this so how many times greater than the cable pull does the circumference need to be. Therefore the circumference = cable pull x (360 / servo angle). Diameter = circumference / π.

Diameter = cable pull x (360/(servo angle x π))

Explanation of the calculation in more detail.

The cable pull becomes a percentage of the servo horns circumference, which is (available servo angle / 360). We want the inverse of this so how many times greater than the cable pull does the circumference need to be. Therefore the circumference = cable pull x (360 / servo angle). Diameter = circumference / π.