Revell Big Boy Locomotive Plastic Model Kit 02165 The American Big Boys are some of the longest and largest steam locomotives ever built anywhere in the world. During the late thirties Union Pacific often used auxiliary engines to haul trains from Ogden, Utah up a steep pass to Wasatch. U.P. wished to simplify this system and instructed their own development department to design a new locomotive capable of hauling a 3,600 ton train (max 4,200 tons) up the steep pass. The 25 Big Boy locomotives were built in 2 groups. The first group, called the Class 1, was built from 1941. The second, Class 2, was built in 1944. The last goods train was hauled by a Big Boy loco in July 1959. Most Big Boys were retired from service in 1961. Model details Scale 1:87 No. of parts 87 Length 464 mm Skill Level 3 One-piece reproduction boiler Separate butterfly damper Detailed driver's cab Movable pony trucks Detailed driving wheels Detailed driving rods Front cow-catcher Detailed tender with ladders Finely detailed reproduction tracks (approx. 48 cm) Decals for 2 Union Pacific versions Starter Paint Pack Includes: 5 x 17ml Vallejo model paints. Vallejo paints are supplied in plastic bottles of 17ml with an eyedropper device which keeps paint from drying and prevents spills. The model color range has been specifically developed for adherence on difficult surfaces such as metal and plastic, but the product is not toxic, not flammable, and does not give off noxious fumes. Please note: The paint packs offered are only our suggestion from the box art and will not match directly with the instructions found within the kit. Deluxe Materials Plastic Magic Cement 40ml (AD83) Plastic Magic Cement is a thin, liquid plastic cement with a 10-15 sec adjustment time & non-clog action. It is non-toxic, non-flammable, has minimal odour and almost zero emissions when compared to competitors.