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The point I was raising regarding loading gauge with the Roadrailers was piggyback loading gauge, not container loading gauge.

That's what I compared, too (with a typo: should be 9" for Terminal Anywhere, not 9'): whether the semi-trailer carries containers or not is not the issue here. (I couldn't find figures or drawings to estimate the lifting height of normal Roadrailers.) Lifting 230 mm above rail is not that much, and it actually appears somewhat less in practice due to the difference from spring suspension and tire deformation of the trailer road wheels (and possibly also because it appears as if the front part of the trailer is lifted less, something like 2").

Can you find figures on RoadRailer lifting heights? The Wikipedia photo appears to show a lower lifting height than Terminal Anywhere (my rough visual estimate is 150 mm), but it's not clear to me whether the other end of the trailer is lifted already.

the original Roadrailers of the 1950's had bogies that lifted up out of the way when on the road

There is a modern version, too: American Surface Lines' RailMate, but I suspect anything with deadweight carried around is a stillborn idea.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Wed Jul 18th, 2012 at 02:01:25 AM EST
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