I've been modeling in ho scale for 20 or 30 years, and belong to a ho scale module railroad club. My oldest grandson will be 2 in Jan. and his little brother is about 6 weeks old. I retired from my job last May, and while at a childrens summer camp where I do volunteer work, they asked if I new someone who could rebuild an Izusu diesel engine in a Mustang tractor. I told them I could do it, so we made arrangements for the maintainance director to bring the engine down the mountain to me. I called my old service manager to see if I could use the steam cleaner on the engine yesterday morning. Jack said ok, so I met the director at Carrier Transicold. My old service manager is also a fishing buddy of Rod Carew. When I got to the shop, jack had enough boxes of trains in the back of his truck to fill the back of my Dakota! Rod bought a bunch of trains when he retired from baseball, but got bored and stored them in Jack's garage. I guess he told Jack to go ahead and get rid of the trains. I finally went through the boxes tonight. I found a LGB starter set, a Lionel set, a bunch of ho stuff, and even Marklin a/c ho stuff. Now to my Lionel question. The Lionel set is an Alton passenger train set with a maroon colored hudson type locomotive and 7 passenger cars. Will this set work on 027 track or do I need to get 072, or is there another size in between? My plans for the trains is to use tsome of the ho stuff at the modular club. I'm going to set up the LGB trains on my patio when my grandsons come over after they get old enough to play with electric trains. When they are old enough for the trains, I think I'll get a freight set to go with the passenger set, and give them the Lionel sets. I'll get them enough track to set up two layouts on the floor to run both trains at once. I'm probably 4 years away from them being old enough to have electric trains, but am wondering what track to use for the Lionel.