This model features three motions — slew, luffing the jib, and hoisting the load. It is driven by a Como Drills RS540 motor to gearing as shown in the photos.

The jib is almost 2’ 6” long, and is made from girders, extended by 12½” strips and braced girders. The tower is 9½” high and 7½” square, built using girders, plates and braced girders.

Slewing is carried out by a 4” ball race and 133-tooth gear, driven by a 19-tooth pinion from the mechanism.

The load is hoisted by a single row block; a double row can be substituted easily (see general view).

At the present time the model does not travel. This is planned in the second phase of development.


Nice crane Brian… Greetings.

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