Torque Meter Wire Sizing Calculator

Torque Meter Wire Sizing Calculator

This application will calculate the length of a given torque element wire, which is accurate enough for construction and use with relative torque values...
You can also calibrate the torque meter via one of the available methods to get accurate readings that can be compared to others torque meters.

The calculations are based on a torque wire < .032 inches, based on the following formula:

       C * T * L
a =  -------------
       D**4 * G

Where:
  a = angle of pointer deflection in degrees
  C = constant: 36.5
  T = torque in inch-ounces
  L = length of the music wire torsional element in inches
  D = diameter of the music wire torsional element in inches
  G = torsional Modulus of Elasticity for music wire in pounds/square inch
      (for music wire up to .032 inch diameter = 12,000,000)



Torque per full revolution: (in in./oz.)
Wire Diameter: (wire diameter in inches)
 
Wire length for 0.55 in./oz. torque at full rotation of 0.012 music wire:
4.462