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  1. Traction: Wheels or Weight?

    Live Steam
    I'm building a small loco, the boiler and cylinder donor being a Roundhouse Sammie. As this is my only experience with live steam, I've found that Sammie likes to peel out on 2% grades if he's got more than 3 cars behind him. Roundhouse says their locos will pull ~28lbs, 6-7 cars by their...