kleines Beispiel, was alles moeglich hier, Geblaesemotor E32, der hat nix passendes an Kohle von Bosch gefunden, hat stattdessen 2 genommen:
The closest I could come to a matching brush was 86-94 Nissan/Hitachi alternator. I had to double them up to equal the size of the Bosch brushes. They'll wear in unison so I see no problem doubling them. The Bosch is .312" x .390" x ? long. The Nissan brushes are .195" x .310" x .700" long, fit fine:
http://www.nmia.com/~dgnrg/brush1.jpg
http://www.nmia.com/~dgnrg/brush2.jpg
und sofort wird der geneigte Leser aufschreien und sagen, die Auflageflaeche passt ja nicht, kein Problem, sagt Gale:
matched the curvature by fashioning a drum sander with 180 grit on a PVC pipe the same diameter as the commutator, chucked in the lathe with the brushes chucked in the toolholder. It sacrifices many miles of natural wear but mates the contour properly from the beginning.