01-08-2009, 12:38 PM
They sure look like articulated trucks to me...which allows for an easy time negotiating curves.
In the US, 4 axle trucks were a pair of 2 axle trucks connected together (and articulated) with the bolster in the middle, unsupported by an axle. That basic design was ultimately found to be inferior to 2 axle and 3 axle trucks (more friction, more weight, more cost, and less reliability). Of course, the trucks here are more than a century newer in design...and have nothing in common with the 19th century american version.
In the US, 4 axle trucks were a pair of 2 axle trucks connected together (and articulated) with the bolster in the middle, unsupported by an axle. That basic design was ultimately found to be inferior to 2 axle and 3 axle trucks (more friction, more weight, more cost, and less reliability). Of course, the trucks here are more than a century newer in design...and have nothing in common with the 19th century american version.
Michael
My primary goal is a large Oahu Railway layout in On3
My secondary interests are modeling the Denver, South Park, & Pacific in On3 and NKP in HO
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My primary goal is a large Oahu Railway layout in On3
My secondary interests are modeling the Denver, South Park, & Pacific in On3 and NKP in HO
<!-- m --><a class="postlink" href="http://thesouthparkline.blogspot.com/">http://thesouthparkline.blogspot.com/</a><!-- m -->