GE U Series speed sensors

I used 1x2mm Black Silicone Rubber Vacuum Tubing from AliExpress and scraps of aluminum wire left over from pop rivets (~1.35mm).

I highly recommend the Tamiya 74024 Thin Blade Craft Saw.

The trucks on the Aristo-Craft U25B are offset and may affect the look and function of this modification.  I'll used the lower and center plate here https://www.printables.com/model/562316-aristo-craft-u25b-loweringtruck-centering-plate