Our client:

Our Client is a manufacturer of after-market Parts for Rotating Electrical products such as Starters, Alternators, Generators, Compressors and accessories in North America.


Reverse Engineering of Starter Motor has the following activities:

  • Measuring & Scanning of all parts/assemblies using CMM/3D Scanner
  • Creation of 3D parametric models & 2D drawings.
  • Surface Finish measurement at bearing seating areas.
  • Testing of Spring rating.
  • Creating Electrical Schematics.
  • Identifying Armature, Solenoid and Coil resistance

Why APA? 

APA has a dedicated team to work on Reverse Engineering of Components with an exclusive lab set up for Probing, Scanning (3D Non-Contact), and measuring dimensions of various automotive and non-automotive components. We also have the capability to identify the chemical and mechanical properties of materials.

Motor Reverse Engineering Process: 


  • Prepare part by spraying white powder.
  • Fix the part properly to scan.
  • Get symmetry profile measurements before scanning the part.


  • Cleanup of Noise in the scan data.
  • Align to coordinate system.
  • Export as .stl format


  • Import .stl file.
  • Extracted curvature profiles,Generate outer surface as per ASTM A963/A963M97standards.
  • Build parametric model from scan data.

Quality Check:

  • Overlay scanned data and 3D model.
  • Identify deviations.
  • Generate comparison report


  • Measuring Armature, Solenoid and coil resistance.
  • Generate schematics for Armature & Solenoid with winding information.
  • Testing of Spring ratings.
  • Generate drawing for Springs.


  • Generate 2D drwaing from 3D models.
  • Do stack up analysis and provide tolerance.
  • Surface Finish measurement at bearing seating areas.
  • Prepare Bill of Material.

Value delivered:

  • APA delivered “1 stop solution” for extracting both mechanical, electrical design informations of the Starter Motor at much lower cost when compared to onshore execution

If you would like to know more about this topic.