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[quote]QUOTE: Originally posted by corwinda [quote]QUOTE: Originally posted by futuremodal I guess now the only hurdle left is a way to lift the 2nd and 3rd trailers of a typical double and triple trailer combination. With respect to the B-train type trailer combo, which uses the kingpin/5th wheel connection for all trailers, I don't see how regular second and third trailers can be utilized with this new straddlecrane innovation and the typical spine cars or well cars with 5th wheel hitches. These trailers would need some kind of link and pin system to hook up to the trailer's drawbar, or a typically labor intensive lashing system to secure them to the flatcar's deck. I still think a ro-ro system is the only way to effectively piggyback these trailers. [/quote] If you're referring to the doubles/triples used by the LCL carriers; the 'trailer' you see consists of a trailer like the first with its kingpin in a one (or occasionally two) axle tow dolly that hitches to the back of the trailer in front. I routinely see those LCL trailers on TOFC cars. [/quote] I agree, some combo trailers especially LCL's do utilize a kingpin and a 5th wheel dolly, others have the front wheels and the drawbar as an integral part of the trailer itself. Since LCL's make up the majority of combo trailers, it may be that a lifting system that utilizes the kingpin and the slider rails attached to the rear trailer wheels is sufficient to cover most of those non-reinforced trailers. The only advantage that ro-ro would have over straddlecrane lifts for combo trailers is that the highway consist would not have to be broken up for ro-ro loading. I talked to a guy from CP a while back and the loading drivers for their ro-ro operation had somewhat perfected that art of backing such double combos onto the platfom cars. I don't know but I doubt they had tried that with any triple combos.......
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