While my wife and I have a nice little G scale layout, we are starting the process of a 7.5 gauge, 1 1/2 inch scale railroad in our back yard. Just received our locomotive yesterday. Nice little GE 25 tonner made by Railroad Supply Company. Powered by a Kohler K91T engine and Eaton Hydrostatic transmission with chain drive down to a gear box on one axle, then a second chain connects the 2 axles together. LED headlight and sequencing beacon light on the cab roof. The battery is just for the lights and horn, engine is magnito ignition and lacks any charging system. The lever out the back controls the hydro direction and throttle at the same time, so the RPM's of the engine increase as the hydro control calls for motion. We will start laying track soon for small loop.