Sounds cool. I have 2 older trains I won that took Pellets at a auction. They came with 10 pellets but didn’t work. I guess they have a shelf life but I would like to see how they worked and how much smoke they produces on one pellet.
Common sense tells me you are correct about smoke pellets having a shelf life but I must say that I have used Lionel smoke pellets from the 50s and 60s and lo and behold they still worked. The same goes for the old K-Line pellets and even Marx smoke fluid. I know it seems counter-intuitive but the doggone things still worked.