50-ton coil-elliptic freight truck

PC-219-P Coil-Elliptic 50-ton freight truck in Proto:48.  The addition of an elliptical leaf spring replacing the middle coil spring provided a dampening effect of the friction between leaves which tended to resist sudden movements and reduce oscillations.  Protocraft’s model is based on Symington-Gould (Gould Coupler Corporation of Rochester, N.Y) drawings.  Both Symington and the Buckeye Castings Co of Ohio, were the chief exponents of coil-elliptic trucks which were adopted as a system standard by the Pennsylvania Railroad and several smaller lines such as the Chicago Great Western.

Protocraft’s all brass construction, based on Symington’s drawings, has ball bearings in each journal box with working journal box lids, leaf springs are hinged and fully workable, full brake detail and rolls on Protocraft’s unique sintered 70% steel and 30% stainless steel blend for a very hard rolling surface, and is fully equalized. Axles are all stainless steel for added strength. Left unpainted, wheels will rust, and this is desirable in the model as in the prototype. Treads take a shiny finish for a realistic running look. Fabricated in Korea by Boo Rim Precision. $52.95/pair