Total newbie here. I know nothing about model trains. I'm writing because I'm planning on using HO wheelsets, the Bachmann 36" Flat Black variety, in an experimental proof-of-concept VTOL aircraft scale model to keep the rotors in place.
My question is: How are these wheelsets installed in their carriers, trucks is the proper term I believe? I purchased some of the Bachmann 36" Flat Black wheelsets and cannot pull the wheels off of the axle. I'm trying to figure out how to design them into the airframe so that the rotors can be easily but securely installed.

https://1drv.ms/i/s!AvbRThajlgqAhh0SlDIAVWRC68UW