The Great Lakes Large Scale Train Expo is a two day event for G gauge to 7.5" Gauge trains, accessories and more! You can expect to see: G Gauge all the way up to 7.5″ gauge ride on trains and accessories for sale. Exhibitor and club display setups (All G scale or larger train related). Clinics (including clinics for kids) to improve your skills. Hourly door prize drawings. Modeling Contest. Concessions and MORE!