Basic Question On Converting 3-Rail Rolling Stock To 2-Rail

Mario sells spacers for various makes of rolling stock. Makes the process much easier.   O Scale 2R & 3RS Components

This thread might be of interest to follow.    https://ogrforum.com/t...ly=69425981480258087

purchase complete 2-rail truck assemblies (from Atlas ?) and change them out. Easy as that? Yes that easy Also you can find them on the bay too.  The process is the same for MTH rolling stock, buy MTH 2r Trucks. For Weaver you can go with  Athearn or Walther s          http://www.athearn.com/Product...aspx?ProdID=ATH90821 or https://www.google.com/#q=athe...+trucks&tbm=shop 

Hope this helps

I would personally use Atlas O 2-rail trucks on all your conversions, both MTH and Atlas O.  Their trucks are so much nicer than MTH it's not even a comparison. Remove the MTH trucks and use the 2-rail Atlas trucks that come with the mounting screws and ends to do this.  Trust me it's much better. 

If you have a friend that will trade, you can just change out the wheelsets in the trucks.     I have a friend that regularly trades me 2-rail Atlas Wheelsets for 3-rail.    We both convert our cars much cheaper that way.