Chris,
Yes, the GLRR Inc. #'s 40 & 44 have 4 rigid driving axles, but the third driver on both engines is blind (flangeless), allowing the engines to take sharp curves, like those on the Loop. "We" (those who expressed concern or doubt whether the #12 could take the sharp curves of the Loop) were observing its extended wheel base from pony truck to trailing truck, as well as the spec sheet for the #12, which states
"Curves 23 degrees"
This spec sheet was posted on the NGDF back in late March (March 24 I believe).
I will not withhold credit where credit is due. The CHS and Railstar have impressed me in at least finding, acquiring, transporting, fixing, and testing an operable steam locomotive. I hope whoever shined up the girl will keep her looking that good during the operating season (although that can be quite the challenge!), as she does look very nice in that shiny green jacket.
However, there are still many tests to be passed. The crew(s?) better be doing a good number of test runs to become familiar with the locomotive, its behaviors, tendencies, and capabilites in order to pull regularly scheduled trains up and down the hill without incident or delay. Also, 2 cars is hardly a full train. The full six car train must be tested for problems, and to see if #12 can handle a fully loaded (every seat on the train filled) train up and down the hill without problems.
never thought I would say it, but, nice work Railstar and CHS
...but you still have a long way to go...
Shane