Series DC Motor brush advance Part 1

Part one of my first experiment with advancing the brushes of my 13" forklift motor made by pyroban and rated at 80v. Any advice most welcome!

 

Series DC Motor brush advance Part 2

Part two of my first experiment with advancing the brushes of my 13" forklift motor made by pyroban and rated at 80v. Any advice most welcome!

 

Series DC Motor brush advance Part 3

Part three of my first experiment with advancing the brushes of my 13" forklift motor made by pyroban and rated at 80v. Any advice most welcome!

 

Series DC Motor brush advance Part 4

Part four of my first experiment with advancing the brushes of my 13" forklift motor made by pyroban and rated at 80v. Any advice most welcome!