Wheel Extensions

The Wheel Extensions plug-in features additional calculations and alignments for use on single wheel measurements as well as TwinHead measurements. These calculations and alignments are described below.

Wheel flange width
Calculates the width of the flange (W) for the selected profile. Default value for the parameter is: L = 14 mm.
Wheel flange width (Tram)
Calculates the width of the flange (D) for the selected profile. Default values for the parameters are: L1 = 58 mm and L2 = 10 mm.
Wheel flange crown thickness
Calculates the thickness of the flange crown (D) for the selected profile. Default values for the parameters are: L = 2 mm
Wheel flange back wear
Calculates the flange back wear (W) for the selected profile. Default value for the parameter is: L = 14 mm.
Wheel flange back wear (Tram)
Calculates the flange back wear (D) for the selected profile. Default values for the parameters are: L1 = 58 mm and L2 = 10 mm.
Wheel flange angle
Calculates the wheel flange angle (A) at a given point defined from the taperline (L1). The angle is determined either from the tangent in the point, the angle between two points on each side or as the average of the tangent angels in a certain area (D). Default values for the parameters are: L1 = 70 mm, L2 = 10 mm and D = 5 mm.
Wheel flange angle maximum
Calculates the maximum flange angle (A) and position (X) for the selected profile. The calculation determines the angles either as the tangent angle in each point, as the angle between two points on each side or as the average of the tangent angles in a certain area (D). Default values for the parameters are: D = 2.54 mm and L = 70 mm.
Wheel flange root radius
Calculates the wheel flange root radius (R) at a given point defined from the taperline (L1). The radius is determined from the curvature of a 2nd order polynomial fitted to a specified area (D). Default values for the parameters are: L1 = 70 mm, L2 = 10 mm and D = 5 mm.
Wheel flange root radius minimum
Calculates the minimum flange root radius (R) and position (X) for the selected profile. The calculation determines the radius using the precalculated curvature values. Default values for the parameters are: L1 = 70 mm and L2 = 10 mm.
Wheel taperline angle
Calculates the taperline angle (A) using the average in a distance (L2) around the taperline (L1). Default values for the parameters are: L1 = 70 mm, L2 = 20 mm and L3 = 20 mm.
Wheel wear difference
Calculates the difference between the wheel wear on a measured profile and a reference profile. Default values for the parameters are: L1 = 2 mm, L2 = 70 mm and L3 = 10 mm.
Wheel diameter difference
Calculates the difference between the diameters on wheels in a bogie.
Wheel hollowing
Calculates the wheel hollowing (H) at a specific position (L2) for the selected profile. Default values for the parameters are: A = 0°, L1 = 70 mm and L2 = 70 mm.
Wheel hollowing maximum
Calculates the highest wheel hollowing (H) and position (X) for the selected profile. Default values for the parameters are: A = 0° and L = 70 mm.
Wheel thread wear
Calculates the thread wear (w) as the distance between the measurement and the reference at a given point (L) defined from the backside of the flange. Default value for the parameter is: L = 70 mm.
Wheel thread wear maximum
Calculates the maximum thread wear (W) and position (X) between the measurement and the reference in an area set from the flange backside (L1) to the outer thread (L2). Default values for the parameters are: L1 = 50 mm and L2 = 5 mm.
Wheel volume loss
Calculates the volume between the measurement and a reference. This is done using either the measured diameter (if available) or the diameter entered as a parameter for the calculation. Default values for the parameters are: Diameter = 900 mm and Density = 0,00782.
Wheel diameter from tyre
Calculates the wheel diameter on either the flange (Df) or the taperline (Dt) given the tyre height (Ht) and the inner diameter (Di). Default values for the parameters are: L = 70 mm and Di = 605 mm.
Wheel gauge flange
Calculates different wheel gauge parameters for a set of wheel profiles given the measured back-to-back gauge (Gb). Default values for the parameters are: L1 = 70 mm and L2 = 10 mm.
TwinHead wheel gauge
Calculates the wheel gauge values (Gb, Gtl and Gf) for a set of TwinHead wheel profiles. Gb is the gauge found at the backside of the wheels, Gtl is the gauge found at the taperline on the wheels and Gf is the gauge found on the flange. Default values for the parameters are: L1= 70 mm and L2 = 10 mm.
TwinHead wheel gauge (AR)
Calculates the wheel gauge value (AR) for a set of TwinHead wheel profiles. AR is the gauge found at the backside of the wheels at a point relative to the flange top. Default value for the parameter is: L = 32 mm.
Align wheel on diameter
Aligns the wheel profile given the corresponding diameter, either flange (Df) or taperline (Dtl) diameter. Default value for the parameter is: L1 = 70 mm.
Align wheel on tyre
Aligns the wheel profile given the corresponding tyre height (Ht).
Standard Calculations
16 calculations
Standard Alignments
16 alignments
Rail Extentsions
8 calculations, 1 alignment
Brake Extentsions
2 calculations, 1 alignment
Equivalent Conicity
Contact analysis calculation
MiniProf for Windows
Version 2.43.74
EXE: 30.9 mb
MiniProf Wheel Extensions
Version 1.9
EXE: 3.3 mb
Copyright© 1992-2018 · Greenwood Engineering A/S · All Rights Reserved

MiniProf is patented under the following patent numbers: 166972 in Denmark, 0569469 in Europe, 3154332 in Japan and 5351411 in USA.