Here are some early ideas of mine and Butch's to reduce
the wear on the brushes. The ACAD stuff is mine.
--  Paul Lamar ...No rotor no motor.

 I just noticed a potential flaw in your idea Paul.
The brushes are spring loaded and will retain contact with the rotor,
or pop out?
Buly

On my drawings they are fine as they are fixed to the nylon lever.
On Butch's dwg of my idea, which came after mine, they are
defective :)