Traction Tires

[jward]

on a steamer like the em1, it should be very easy to tell if it is slipping or not.     note how fast the side rods move on level track, in relation to the speed the locomotive is moving.    when you get it to the grade, if it is slipping the rods will be moving much faster than the speed would indicate. if the rods slow down when the engine slows down, you are not slipping.