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Are Piggyback Van Trains faster then Doublestack? Locked

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Posted by Anonymous on Wednesday, August 23, 2006 11:19 AM

 Well so would the UPS trains be a unscheduled Extra Train on BNSF and CSX?

I cant find them on Skedz.com

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Posted by spbed on Wednesday, August 23, 2006 11:17 AM

Since I assume you can be fired if you exceed the posting speed limit I would guess the answer to your question is yes in the area where I did the pacing. However, maybe a BNSF operating person on this board for sure can reply to your questiom. Having been in the intermodal biz from the 70s onward & being quite familar with stackers I just wondered how the posted conclusions from others were reached concerning TOFC trains. .

 

 Mookie wrote:
 spbed wrote:

Is there anyone here from the BNSF that can confirm van trains are run faster then the stacker I paced at 70MPH to confirm your post?

 

 Chris30 wrote:

The "van trains" are generally faster than "double stack" intermodals because a lot of trailers are for LTL carriers such as UPS and Roadway who pay for the high priority premium expedited service.

CC

spbed - are they legally permitted to go that fast?

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Posted by chad thomas on Wednesday, August 23, 2006 11:14 AM
 Mookie wrote:
 spbed wrote:

Is there anyone here from the BNSF that can confirm van trains are run faster then the stacker I paced at 70MPH to confirm your post?

 

 Chris30 wrote:

The "van trains" are generally faster than "double stack" intermodals because a lot of trailers are for LTL carriers such as UPS and Roadway who pay for the high priority premium expedited service.

CC

spbed - are they legally permitted to go that fast?

Yes, Freights are allowed 70 mph, Passenger gets 90. They use to allow the hotshots 79 if they had less then 70 tons per operative brake but now they are limited to 70. The UP is 75 on the Sunset and 79 for passenger (east of Indio that is).

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Posted by Mookie on Wednesday, August 23, 2006 11:06 AM
 spbed wrote:

Is there anyone here from the BNSF that can confirm van trains are run faster then the stacker I paced at 70MPH to confirm your post?

 

 Chris30 wrote:

The "van trains" are generally faster than "double stack" intermodals because a lot of trailers are for LTL carriers such as UPS and Roadway who pay for the high priority premium expedited service.

CC

spbed - are they legally permitted to go that fast?

She who has no signature! cinscocom-tmw

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Posted by chad thomas on Wednesday, August 23, 2006 10:36 AM
 TomDiehl wrote:

 chad thomas wrote:
With the same horsepower per ton at higher speeds the stacker will have higher wind resistance therefore the TOFC will be slower. Beyond that it's depends on many factors. A hotshot UPS Z train will get more HP/T then a stack train and would be faster.

As big and heavy as any train is, the wind resistance is a very small factor. Dating back to the first streamliners, designers such as Lowey and Dreyfus used to refer to them as "Streamstyled" because they recognized this.

That may be true at low speeds but at 70-75 it is a significant drag.

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Posted by TomDiehl on Wednesday, August 23, 2006 10:14 AM

 chad thomas wrote:
With the same horsepower per ton at higher speeds the stacker will have higher wind resistance therefore the TOFC will be slower. Beyond that it's depends on many factors. A hotshot UPS Z train will get more HP/T then a stack train and would be faster.

As big and heavy as any train is, the wind resistance is a very small factor. Dating back to the first streamliners, designers such as Lowey and Dreyfus used to refer to them as "Streamstyled" because they recognized this.

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Posted by spbed on Wednesday, August 23, 2006 10:08 AM

Is there anyone here from the BNSF that can confirm van trains are run faster then the stacker I paced at 70MPH to confirm your post?

 

 Chris30 wrote:

The "van trains" are generally faster than "double stack" intermodals because a lot of trailers are for LTL carriers such as UPS and Roadway who pay for the high priority premium expedited service.

CC

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Posted by Chris30 on Wednesday, August 23, 2006 9:43 AM

The "van trains" are generally faster than "double stack" intermodals because a lot of trailers are for LTL carriers such as UPS and Roadway who pay for the high priority premium expedited service.

CC

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Posted by chad thomas on Wednesday, August 23, 2006 9:35 AM
With the same horsepower per ton at higher speeds the stacker will have higher wind resistance therefore the TOFC will be slower. Beyond that it's depends on many factors. A hotshot UPS Z train will get more HP/T then a stack train and would be faster.
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Are Piggyback Van Trains faster then Doublestack
Posted by spbed on Wednesday, August 23, 2006 8:59 AM

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Are Piggyback Van Trains faster then Doublestack?
Posted by Anonymous on Wednesday, August 23, 2006 8:42 AM

  It has been my experance that van trains are faster then double stack trains...

Could be air resistance or that Van trains are mail and UPS and are on higher prority..

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