Monday, January 23, 2012

Mantua HO scale 4-6-4 Heavy Pacific, circa 1980...



...a nice runner--when you can get juice to the motor--they are plagued with contact issues that come from a combination of zinc castings, steel axles and brass wheels working against each other by their various corrosion and rust abilities. The older ones have a separate bell and hanger that protrudes over the smoke-box and headlight. They are now offered under the Mantua Classics name by Model Power.

One way to improve pickup is to remove as many contact points as possible, bringing the electricity to the motor is as directly as one's abilities and materials on hand are able to muster. I made these pickups with some strip brass, 2 round terminals that fit around the bolster and some wire...

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Knowing modelers will immediately see the impending screw-up--since fixed--...unknowing modelers get to find out on their own...

The fix works great, completely bypassing the zinc floor of the tender and the trucks, though the original source points of power remain. Adding 3 ounces of lead helps it stay in contact and track better.

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