Yes, the axle runs directly on the pot metal casting. The design did not take into consideration the electrical arcing that happens--it's not really "wear" that causes the problem! I have considered adding wire wipers on the back side of the wheels to reduce that arcing, but so far the design is only in my head! I've also considered making the new bushings a bit long, so they stick inside where the gear goes to provide a "centering devise" to keep the gear in line with the armature. I have yet to put these ideas into practice to see if the ideas are any good. With my present situation, I probably won't get around to testing the ideas for at least a year, so I provide them here to see if anyone else wants to give them a try.
|
|
