1/10 Liebherr Excavator R 984 Litronic

[Markus K.]

Well, it is the best if you practice again and again. Today I welded a couple hours using grey tungsten and after a while I tested the gold ones. But those didn't work as well as the grey ones, I got stuck very often with the same settings on the welder. Because of this I switched back to the gray tungsten. Pictures from this welding will be posted later.
First some pictures from the 2-stage Planetary gear inside the drive wheel. Gear ratio is 20.36 : 1.

[Markus K.]

Some more from the drive train. The gearbox is shimed with thin brass sheets for proper chain setup. The motors are brushless outrunner with 120 Watt and 760kv.