Bachmann G Scale 10 Wheeler Rebuild

This arrived as a bag of bits apparently only needing a new worm gear. In the event, it had a bag of other problems, some arising from the fact that the parts came from at least two and possibly more different versions of this model, some from Bachmann's legendary rubbish powertrain design, and some from missing parts. After trying new gears and a stiffener for the chassis, I gave up and made a whole new gearbox. I also had to make new pick ups as the originals were missing. There's a link to the finished model to prove it worked. In the comments below I'll add the links to the Tinkercad files so that you can adapt them for whatever version of Bachmann's abomination you have.
Not shown in the video is that I swapped the back axle for the middle one, the latter having the splines mid axle, and I also made a dimple in the axle to take the gear's locating screw - it is now properly locked in place.

[voltagefreak]

I would like information about sending your designs to a printing service since I can't afford my own 3D printer. Besides, I'm a moron about all this stuff anyway. I've only used the PC for information, news, ordering, and really simple stuff. All my designs are done on paper. I have no idea what to do with CAD. But I do like your design for the Big Hauler because I have a couple of these as well as the Bachman 2-6-0 still in the box and never run yet love your vids. Keep 'em comin'.🥰

[rivergladesgardenrailroad]

Your a hero making something of this peace of junk....

[jerredwayne]

I sure wish I could find someone who could print the gear for the next generation of this chassis. At this point my only choice is a whole new chassis for almost $200

[AngelGarcia-gftt]

How do you remove the wheels from the mount of the worm gears

[judestefanik]

can you post a link for the 40 tooth gear?