My first Lego locomotive MOC. Modeled after a BNSF ES44AC locomotive. 6 studs wide, 50 studs long and powered by two Lego Power Functions train motors. The three axle bogies have enough articulation to negotiate the standard Legos curves. It's made up of about 1200 bricks, took about 50 hours to design in Lego Digital Designer, 8 hours to assemble and cost a little over $200 to build, complete with electronics, from parts purchased off Bricklink. I've included the .lxf file below and welcome anyone to build, copy, modify or just examine my building techniques. I took great care to create many different groups to make the digital version easy to disassemble an examine. I've also included a link to a YouTube video of  it running. It negotiates the standard Lego curves with no problems. I hope you like!                     Here's the .lxf file... https://bricksafe.com/pages/sed6/bnsf-es44ac-locomotive Thanks for looking!