I think it's all about lube. Heck, there's a grease gun strapped to the Raven just uptrack of the brakes. The PTC trains, as well as Gerstlauers, simply can't take a turn without some help. When the wheels can't steer, they have to slide. That's why they squeal around turns. The PTC train was designed mainly for an out-and-back course.
As for HW, Jeff ,the keeper of the Raven and Legend, was formerly a CCI employee that went full time for HW. They're his babies and he takes good care of them.
I see a post from Rideman in the near future :)
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Scott W. Short, Rail Junkie
scott@midwestcoastercentral.com http://www.midwestcoastercentr