Subject:
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Re: 10170 TTX Intermodal Double-Stack Car Preview
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 4 May 2005 00:47:56 GMT
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Viewed:
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7799 times
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In lugnet.trains, Brian Davis wrote:
> In lugnet.announce.iltco, Mike Walsh wrote:
>
> > the new 10170 TTX Intermodal Double-Stack Cair.
>
> OK, this is only marginally LEGO, but... why the shared bogie? As a non-train
> type, I've certainly seen these on the tracks, but I'm not sure I understand why
> it's prefered over seperate cars. Is it just cheaper to produce two cars and
> three bogies over two cars and four bogies?
Marginally, yes.
But much more important is the significant reduction in tare(1) weight, and the
reduction in length. Since TOFC/COFC(2) is operated at high speeds, in long
trains, less tare means more payload per horsepower used, and less length per
car means more cars in the train before you exceed the capacity of sidings
system wide. Building new sidings or lengthening existing ones is VERY expensive
1 - the weight of everything BUT the load
2 - Trailer on Flat Car/Container on Flat Car
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Message has 2 Replies:
 | | Re: 10170 TTX Intermodal Double-Stack Car Preview
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| (...) Aren't there also gains in reduced wheel friction? Even if the center trucks weighed the same as 2 normal trucks, the wheel friction would be reduced in the single truck example. Of course axle loading weight goes up with the single center (...) (19 years ago, 6-May-05, to lugnet.trains)
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Message is in Reply To:
| | Re: 10170 TTX Intermodal Double-Stack Car Preview
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| (...) OK, this is only marginally LEGO, but... why the shared bogie? As a non-train type, I've certainly seen these on the tracks, but I'm not sure I understand why it's prefered over seperate cars. Is it just cheaper to produce two cars and three (...) (19 years ago, 3-May-05, to lugnet.trains)
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