John
Hi, Pete here. I have yet to build either set of the work trains, but I have purchased all the 'extras' needed for building both HO and HOn3 sets. In the instructions, Brett suggests very specific trucks and couplers for each gauge. Since you are working with HOn30, I would start looking at Fox Valley wheelsets and Shapeways truck side frames. They are not cheap! As for couplers, again, follow Bretts suggestion. I have both wheelsets and side frames that I'd be happy to sell to you at a discounted price if that is what you are looking for.
Pete
Hi, Pete here. I have yet to build either set of the work trains, but I have purchased all the 'extras' needed for building both HO and HOn3 sets. In the instructions, Brett suggests very specific trucks and couplers for each gauge. Since you are working with HOn30, I would start looking at Fox Valley wheelsets and Shapeways truck side frames. They are not cheap! As for couplers, again, follow Bretts suggestion. I have both wheelsets and side frames that I'd be happy to sell to you at a discounted price if that is what you are looking for.
Pete