Hi,
What size wheels do Gunderson Maxi lll freight cars take?
I think the prototype runs on 33" on the end trucks and 38" (for 125-ton trucks) elsewhere. These are modeled using 33" and 36", respectively.
You are correct , in fact nearly all articulated intermodal cars are set up this way .
70 ton trucks on the A & B ends and 125 ton trucks in between .