Summary

Lionel Truck, Version 3

Please read all the information below.

Multiply all of the parts by 25.4 (to convert from inches to millimeters).
Version 3 is made to use original metal Lionel wheels and axles.
I found that not all axles are the same length or diameter. You may need to drill out
the axle holes a little bit.
Truck E is a little wider than the other trucks.
Truck D and E have an offset coupler.

The main part of the truck can be printed at .15 or .2 resolution.
The trucks can be mounted to the train body with #6 machine screws and nylon locking
nuts.
There is a .5 inch and a .8 inch bushing included for mounting the truck to the train
body. You may not need them.
The sides can be mounted with #2 - 3/8" sheet metal screws or glued to the truck.
Side A can be printed upside down to avoid using supports.
Side C is a little more detailed and will need support.