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Started by John R Cambron
Sat, 30 Jun 2001 21:42
Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Sat, 30 Jun 2001 21:42
Date: Sat, 30 Jun 2001 21:42
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My comments and photos; http://www.chesapeake.net/~cambronj/wmata/red-bird.htm -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Michael Malak
Date: Sat, 30 Jun 2001 23:12
Date: Sat, 30 Jun 2001 23:12
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"John R Cambron" <*cambronj@chesapeake.net*> wrote in message news:tjshpfbufkjt63@corp.supernews.com... > > http://www.chesapeake.net/~cambronj/wmata/red-bird.htm New York's lengthwise seating makes so much more sense than WMATA's when it comes to crush capacity. WMATA aisles are an annoying 1.5 people wide. New York's aisles are 2.5 people wide -- which allows for people to get on/off quickly, which in turn allows for shorter dwell times. The lengthwise seating is more flexible, allowing large people to be comfortable while children can take up less width. And there's space for packages -- the lengthwise seats and the wide ailes provide for this. -- Michael Malak malak@claygency.com
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Tim Kynerd
Date: Sun, 01 Jul 2001 12:01
Date: Sun, 01 Jul 2001 12:01
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In article <g1t%6.45613$Md.14357941@typhoon.southeast.rr.com>, Michael Malak wrote: > "John R Cambron" <*cambronj@chesapeake.net*> wrote in message > news:tjshpfbufkjt63@corp.supernews.com... >> >> http://www.chesapeake.net/~cambronj/wmata/red-bird.htm > > New York's lengthwise seating makes so much more sense than > WMATA's when it comes to crush capacity. WMATA aisles are an > annoying 1.5 people wide. New York's aisles are 2.5 people > wide -- which allows for people to get on/off quickly, which in > turn allows for shorter dwell times. The lengthwise seating is > more flexible, allowing large people to be comfortable while > children can take up less width. And there's space for packages > -- the lengthwise seats and the wide ailes provide for this. I still maintain that the seating and door configurations are one important reason why people cluster near the doors on the Washington Metro. There are too few doors per car (three on each side, 75-foot cars), and as you point out, the aisles are narrow, hindering people from getting on and off quickly. I've ridden on many rapid rail systems, and Washington's is the only one where I've ever felt that I might not be able to fight my way off the train at my station. And that includes riding the New York subway at rush hour. -- Tim
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Sun, 01 Jul 2001 19:54
Date: Sun, 01 Jul 2001 19:54
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Tim Kynerd wrote: > > In article <g1t%6.45613$Md.14357941@typhoon.southeast.rr.com>, Michael Malak > wrote: > > > "John R Cambron" <*cambronj@chesapeake.net*> wrote in message > > news:tjshpfbufkjt63@corp.supernews.com... > >> > >> http://www.chesapeake.net/~cambronj/wmata/red-bird.htm > > > > New York's lengthwise seating makes so much more sense than > > WMATA's when it comes to crush capacity. WMATA aisles are an > > annoying 1.5 people wide. New York's aisles are 2.5 people > > wide -- which allows for people to get on/off quickly, which in > > turn allows for shorter dwell times. The lengthwise seating is > > more flexible, allowing large people to be comfortable while > > children can take up less width. And there's space for packages > > -- the lengthwise seats and the wide ailes provide for this. > > I still maintain that the seating and door configurations are one important > reason why people cluster near the doors on the Washington Metro. There are > too few doors per car (three on each side, 75-foot cars), and as you point > out, the aisles are narrow, hindering people from getting on and off > quickly. I've ridden on many rapid rail systems, and Washington's is the > only one where I've ever felt that I might not be able to fight my way off > the train at my station. And that includes riding the New York subway at > rush hour. I don't know if you know this, but when WMATA started up the procurement process for the CAF cars there was talk of putting 4 door openings on each side of the cars. This proposal was shot down by the WMATA board, I don't recall who's recommendation was used shoot it down or what was in the recommendation, my best guess is it had something to do with the structure of the car body. I will also note that the box that the seat pairs that are back to back rest on contain various components of the on board train control system, The hinges on these seat pairs are on the aisle side of the box allowing easy access for surviving. Frankly I prefer the Rohr seating configuration to the Breda, CAF configuration. I think the real answer to overcrowding is to procure an adequate supply of rolling stock and run trains at shortest headways possable during peek times. -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John Mara
Date: Mon, 02 Jul 2001 00:50
Date: Mon, 02 Jul 2001 00:50
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"Tim Kynerd" <tim@tram.nu> wrote in message news:slrn9jv4jl.hs.tim@linux.local... > Overcrowding will always be a problem on any rapid transit system from time > to time, even if there is plenty of rolling stock and frequent service in > the peak. It's even the case that on any given day, some trains are going > to be quite crowded, while others will have relatively few people. As long > as that's true, the only solution to the problem of people clustering around > the doors is to provide more doors. (Note that this is a much narrower > problem than overcrowding in general, even though crowding on the cars is a > contributing factor to this problem.) With the R 110 demonstrators NYCTA tried having nothing to hold on to near the doors to encourage people to move in. This was not too popular and the production R142 cars have hand holds near the doors. John Mara
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Tim Kynerd
Date: Mon, 02 Jul 2001 01:15
Date: Mon, 02 Jul 2001 01:15
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In article <tjuvqjmubl1l6b@corp.supernews.com>, John R Cambron wrote: > > > Tim Kynerd wrote: >> >> In article <g1t%6.45613$Md.14357941@typhoon.southeast.rr.com>, Michael Malak >> wrote: >> >> > "John R Cambron" <*cambronj@chesapeake.net*> wrote in message >> > news:tjshpfbufkjt63@corp.supernews.com... >> >> >> >> http://www.chesapeake.net/~cambronj/wmata/red-bird.htm >> > >> > New York's lengthwise seating makes so much more sense than >> > WMATA's when it comes to crush capacity. WMATA aisles are an >> > annoying 1.5 people wide. New York's aisles are 2.5 people >> > wide -- which allows for people to get on/off quickly, which in >> > turn allows for shorter dwell times. The lengthwise seating is >> > more flexible, allowing large people to be comfortable while >> > children can take up less width. And there's space for packages >> > -- the lengthwise seats and the wide ailes provide for this. >> >> I still maintain that the seating and door configurations are one important >> reason why people cluster near the doors on the Washington Metro. There are >> too few doors per car (three on each side, 75-foot cars), and as you point >> out, the aisles are narrow, hindering people from getting on and off >> quickly. I've ridden on many rapid rail systems, and Washington's is the >> only one where I've ever felt that I might not be able to fight my way off >> the train at my station. And that includes riding the New York subway at >> rush hour. > > I don't know if you know this, but when WMATA started up the > procurement process for the CAF cars there was talk of putting 4 > door openings on each side of the cars. This proposal was shot > down by the WMATA board, I don't recall who's recommendation was > used shoot it down or what was in the recommendation, my best > guess is it had something to do with the structure of the car > body. I will also note that the box that the seat pairs that > are back to back rest on contain various components of the on > board train control system, The hinges on these seat pairs are > on the aisle side of the box allowing easy access for surviving. > > Frankly I prefer the Rohr seating configuration to the Breda, CAF > configuration. I think the real answer to overcrowding is to > procure an adequate supply of rolling stock and run trains at > shortest headways possable during peek times. > Hi John, Another problem is, of course, that adding another set of doors reduces seating capacity. Overcrowding will always be a problem on any rapid transit system from time to time, even if there is plenty of rolling stock and frequent service in the peak. It's even the case that on any given day, some trains are going to be quite crowded, while others will have relatively few people. As long as that's true, the only solution to the problem of people clustering around the doors is to provide more doors. (Note that this is a much narrower problem than overcrowding in general, even though crowding on the cars is a contributing factor to this problem.) Regards, Tim
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: greg byshenk
Date: Mon, 02 Jul 2001 09:57
Date: Mon, 02 Jul 2001 09:57
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Tim Kynerd <tim@tram.nu> wrote:
> John R Cambron wrote:
> > Tim Kynerd wrote:
> >> Michael Malak wrote:
> >> > New York's lengthwise seating makes so much more sense than
> >> > WMATA's when it comes to crush capacity. WMATA aisles are an
> >> > annoying 1.5 people wide. New York's aisles are 2.5 people
> >> > wide -- which allows for people to get on/off quickly, which in
> >> > turn allows for shorter dwell times. The lengthwise seating is
> >> > more flexible, allowing large people to be comfortable while
> >> > children can take up less width. And there's space for packages
> >> > -- the lengthwise seats and the wide ailes provide for this.
The downside of such seating is that it is (at least IMO) much less
comfortable for seated passengers, and provides much less seating
at times of moderate loading.
> >> I still maintain that the seating and door configurations are one important
> >> reason why people cluster near the doors on the Washington Metro. There are
> >> too few doors per car (three on each side, 75-foot cars), and as you point
> >> out, the aisles are narrow, hindering people from getting on and off
> >> quickly. I've ridden on many rapid rail systems, and Washington's is the
> >> only one where I've ever felt that I might not be able to fight my way off
> >> the train at my station. And that includes riding the New York subway at
> >> rush hour.
Have you ridden the Chicago subway? Very narrow aisles and only two
doors per car (though the cars are smaller than most). People avoid
moving in because it can be very difficult to get out again.
[...]
> Another problem is, of course, that adding another set of doors reduces
> seating capacity.
> Overcrowding will always be a problem on any rapid transit system from time
> to time, even if there is plenty of rolling stock and frequent service in
> the peak. It's even the case that on any given day, some trains are going
> to be quite crowded, while others will have relatively few people. As long
> as that's true, the only solution to the problem of people clustering around
> the doors is to provide more doors. (Note that this is a much narrower
> problem than overcrowding in general, even though crowding on the cars is a
> contributing factor to this problem.)
I think I've mentioned this before, but I think that the best
configuration is that used on the Paris Metro: very wide doors
with 'strapontins' -- folding jumpseats -- in the doorways. These
provide a significant number of additional seats when the trains
are moderately loaded, while providing lots of standing room near
the doors (along with extra-wide door openings to speed boarding)
during periods of very heavy load.
--
greg byshenk - gbyshenk@byshenk.net - Leiden, NL
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Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Hank Fung
Date: Mon, 02 Jul 2001 15:34
Date: Mon, 02 Jul 2001 15:34
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In article <slrn9jtqf4.61q.tim@linux.local>, Tim Kynerd <tim@tram.nu> wrote:
>I still maintain that the seating and door configurations are one important
>reason why people cluster near the doors on the Washington Metro. There are
>too few doors per car (three on each side, 75-foot cars), and as you point
>out, the aisles are narrow, hindering people from getting on and off
>quickly. I've ridden on many rapid rail systems, and Washington's is the
>only one where I've ever felt that I might not be able to fight my way off
>the train at my station. And that includes riding the New York subway at
>rush hour.
But wouldn't BART be worse, since it only has two doors for the same
length car? And those trains can get quite crowded at times.
--
Hank Fung fungus@ocf.berkeley.edu
University of California, Berkeley Go Bears!
http://www.ocf.berkeley.edu/~fungus
From the Great State of Washington (despite what you see above)
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Ron Newman
Date: Mon, 02 Jul 2001 20:54
Date: Mon, 02 Jul 2001 20:54
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On 1 Jul 2001 13:01:22 CET, in article <slrn9jtqf4.61q.tim@linux.local>, tim@tram.nu stated... >I still maintain that the seating and door configurations are one important >reason why people cluster near the doors on the Washington Metro. There are >too few doors per car (three on each side, 75-foot cars), and as you point >out, the aisles are narrow, hindering people from getting on and off >quickly. The (Boston) MBTA deliberately chose "more doors" (4, instead of 3) rather than "more seats" when ordering the latest set of MBTA Red Line cars, the 01800 series. They even said this was the result of a rider survey. -- Ron Newman rnewman@thecia.net http://www2.thecia.net/users/rnewman/home.html
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Tim Kynerd
Date: Mon, 02 Jul 2001 22:31
Date: Mon, 02 Jul 2001 22:31
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In article <4zP%6.16789$mj7.2848161@typhoon.nyroc.rr.com>, John Mara wrote: > > "Tim Kynerd" <tim@tram.nu> wrote in message > news:slrn9jv4jl.hs.tim@linux.local... > >> Overcrowding will always be a problem on any rapid transit system from >> time to time, even if there is plenty of rolling stock and frequent >> service in the peak. It's even the case that on any given day, some >> trains are going to be quite crowded, while others will have relatively >> few people. As long as that's true, the only solution to the problem of >> people clustering around the doors is to provide more doors. (Note that >> this is a much narrower problem than overcrowding in general, even though >> crowding on the cars is a contributing factor to this problem.) > > With the R 110 demonstrators NYCTA tried having nothing to hold on to near > the doors to encourage people to move in. This was not too popular and the > production R142 cars have hand holds near the doors. They've sort of tried the same thing here in Stockholm with the new C20 stock, although the idea was not to encourage people to move in, but to provide more standing space near the doors. There are way fewer handholds in this space in the C20 cars than there are in the older cars, and most significantly, the floor-to-ceiling pole in the middle of this space has been eliminated. This has also proven unpopular, so they are looking at ways to try to fix it. -- Tim
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Tim Kynerd
Date: Mon, 02 Jul 2001 23:04
Date: Mon, 02 Jul 2001 23:04
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In article <9hq4al$2klk$1@agate.berkeley.edu>, Hank Fung wrote: > In article <slrn9jtqf4.61q.tim@linux.local>, Tim Kynerd <tim@tram.nu> wrote: >>I still maintain that the seating and door configurations are one important >>reason why people cluster near the doors on the Washington Metro. There are >>too few doors per car (three on each side, 75-foot cars), and as you point >>out, the aisles are narrow, hindering people from getting on and off >>quickly. I've ridden on many rapid rail systems, and Washington's is the >>only one where I've ever felt that I might not be able to fight my way off >>the train at my station. And that includes riding the New York subway at >>rush hour. > > But wouldn't BART be worse, since it only has two doors for the same > length car? And those trains can get quite crowded at times. Didn't know that about BART. Yep, that sounds pretty pathetic, especially given the posts on here over the last year or so about increasing crowding on BART. -- Tim
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Tue, 03 Jul 2001 00:20
Date: Tue, 03 Jul 2001 00:20
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Tim Kynerd wrote: < snipped earley comments > > > Hi John, > > Another problem is, of course, that adding another set of doors reduces > seating capacity. > > Overcrowding will always be a problem on any rapid transit system from time > to time, even if there is plenty of rolling stock and frequent service in > the peak. It's even the case that on any given day, some trains are going > to be quite crowded, while others will have relatively few people. As long > as that's true, the only solution to the problem of people clustering around > the doors is to provide more doors. (Note that this is a much narrower > problem than overcrowding in general, even though crowding on the cars is a > contributing factor to this problem.) Tim I under stand that more doors = less crowding and faster loading and unloading that will = shorter dwell times. Their is one problem, the base WMATA car design like the bart car has a flaw that will not easily make it possible to add more door without making the cars heavier. The flaw is the car body it an interracial part of the structure the car. Punching more holes in the car sides for door would require beefing up the under fram to compensate loss of body structural integrity. You got to remember that these car were built like cabin of an passenger jet airplane, and out of aluminium to boot. Frankly I think the more traditional way of building of passenger railroad car would have been a better choice. Stainless steel car body on a an undercarriage bearing all of the loading and buffering. -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: greg byshenk
Date: Tue, 03 Jul 2001 10:30
Date: Tue, 03 Jul 2001 10:30
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John R Cambron <*cambronj@chesapeake.net*> wrote:
> I under stand that more doors = less crowding and faster loading and
> unloading that will = shorter dwell times. Their is one problem, the
> base WMATA car design like the bart car has a flaw that will not
> easily make it possible to add more door without making the cars
> heavier. The flaw is the car body it an interracial part of the
> structure the car. Punching more holes in the car sides for door
> would require beefing up the under fram to compensate loss of body
> structural integrity. You got to remember that these car were built
> like cabin of an passenger jet airplane, and out of aluminium to
> boot. Frankly I think the more traditional way of building of
> passenger railroad car would have been a better choice. Stainless
> steel car body on a an undercarriage bearing all of the loading and
> buffering.
I'm not sure whether this is a big issue -- how common is it to change
the door configuration of existing equipment? It seems to me that
doing so would be rather a large undertaking -- regardless of whether
the equipment is body and undercarriage or unibody construction --
and that such configuration changes would normally be made at the time
that new equipment is ordered.
Also, I suspect that adding more doors would _always_ make the car
heavier, no matter what type of construction is used, because the
doors and their associated hardware will be heavier than the simple
walls they replace.
--
greg byshenk - gbyshenk@byshenk.net - Leiden, NL
hate spam? <http://www.cauce.org>
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Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Jonathan Rynd
Date: Tue, 03 Jul 2001 12:58
Date: Tue, 03 Jul 2001 12:58
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tim@tram.nu (Tim Kynerd) wrote in <slrn9jtqf4.61q.tim@linux.local>: > Washington's is the > only one where I've ever felt that I might not be able to fight my > way off the train at my station. And that includes riding the New > York subway at rush hour. Last night at 8:00 I was unable to fight my way off a NYC subway train before the doors closed, but this was due to someone parking a bike in front of the doors, and in front of me were two tourists with luggage.
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Wed, 04 Jul 2001 04:30
Date: Wed, 04 Jul 2001 04:30
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greg byshenk wrote: > > John R Cambron <*cambronj@chesapeake.net*> wrote: > > > I under stand that more doors = less crowding and faster loading and > > unloading that will = shorter dwell times. Their is one problem, the > > base WMATA car design like the bart car has a flaw that will not > > easily make it possible to add more door without making the cars > > heavier. The flaw is the car body it an interracial part of the > > structure the car. Punching more holes in the car sides for door > > would require beefing up the under fram to compensate loss of body > > structural integrity. You got to remember that these car were built > > like cabin of an passenger jet airplane, and out of aluminium to > > boot. Frankly I think the more traditional way of building of > > passenger railroad car would have been a better choice. Stainless > > steel car body on a an undercarriage bearing all of the loading and > > buffering. > > I'm not sure whether this is a big issue -- how common is it to change > the door configuration of existing equipment? It seems to me that > doing so would be rather a large undertaking -- regardless of whether > the equipment is body and undercarriage or unibody construction -- > and that such configuration changes would normally be made at the time > that new equipment is ordered. The issue is not to retrofit existing car with more door, it's building new cars with more door using the the same car body structural design. > Also, I suspect that adding more doors would _always_ make the car > heavier, no matter what type of construction is used, because the > doors and their associated hardware will be heavier than the simple > walls they replace. That is quite likely to be true, but stainless steel is pound for pound stronger then aluminium in this kind of application. -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: General Kireiko
Date: Fri, 06 Jul 2001 13:16
Date: Fri, 06 Jul 2001 13:16
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Tim Kynerd (tim@tram.nu) wrote:
: Another problem is, of course, that adding another set of doors reduces
: seating capacity.
: Overcrowding will always be a problem on any rapid transit system from time
: to time, even if there is plenty of rolling stock and frequent service in
: the peak.
People stand near doors, whether it be to get off quicker, or to be able
to lean. They are an obstruction, and add to the amount of time it takes
for passengers to enter and leave the train, thereby delaying service,
and thereby causing more crowding.
I recall seeing a special on A&E or the History Channel or Discovery
about the London Underground, and how they chose to install wider doors
to increase the flow of passengers on and off the train. More doors
would help speed up service.
And with regard to loss of seat capacity - yes, that's an issue - but I
bet that person running late doesn't give two shites about a seat. We
aren't running the Broadway Limited here.
-Doug
--
"How would you like it if you were a business executive, and when you
made a mistake, a red light went on and 18,000 people started
screaming?" - Jaques Plante, goalie
METS = My Entire Team Sucks GO RANGERS!!!
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: greg byshenk
Date: Sat, 07 Jul 2001 13:57
Date: Sat, 07 Jul 2001 13:57
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John R Cambron <*cambronj@chesapeake.net*> wrote:
> greg byshenk wrote:
> > John R Cambron <*cambronj@chesapeake.net*> wrote:
> > > I under stand that more doors = less crowding and faster loading and
> > > unloading that will = shorter dwell times. Their is one problem, the
> > > base WMATA car design like the bart car has a flaw that will not
> > > easily make it possible to add more door without making the cars
> > > heavier. The flaw is the car body it an interracial part of the
> > > structure the car. Punching more holes in the car sides for door
> > > would require beefing up the under fram to compensate loss of body
> > > structural integrity. You got to remember that these car were built
> > > like cabin of an passenger jet airplane, and out of aluminium to
> > > boot. Frankly I think the more traditional way of building of
> > > passenger railroad car would have been a better choice. Stainless
> > > steel car body on a an undercarriage bearing all of the loading and
> > > buffering.
> > I'm not sure whether this is a big issue -- how common is it to change
> > the door configuration of existing equipment? It seems to me that
> > doing so would be rather a large undertaking -- regardless of whether
> > the equipment is body and undercarriage or unibody construction --
> > and that such configuration changes would normally be made at the time
> > that new equipment is ordered.
> The issue is not to retrofit existing car with more door, it's
> building new cars with more door using the the same car body
> structural design.
I'm hardly an export in this area, but I suspect that a significant
redesign would be involved no matter what body design was originally
used. It is not just a matter of chopping a new hole in the side of
the car, I don't think.
> > Also, I suspect that adding more doors would _always_ make the car
> > heavier, no matter what type of construction is used, because the
> > doors and their associated hardware will be heavier than the simple
> > walls they replace.
> That is quite likely to be true, but stainless steel is pound for
> pound stronger then aluminium in this kind of application.
I have no idea whether or not this is true (I suspect that it will
depend on how you define "this type of application"). More
importantly, I don't see how it is relevant; after all a unibody _or_
body-on-undercarriage design can each be made of aluminum _or_ steel.
--
greg byshenk - gbyshenk@byshenk.net - Leiden, NL
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Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Sun, 08 Jul 2001 18:26
Date: Sun, 08 Jul 2001 18:26
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greg byshenk wrote: > > John R Cambron <*cambronj@chesapeake.net*> wrote: > > greg byshenk wrote: > > > John R Cambron <*cambronj@chesapeake.net*> wrote: > > > > > I under stand that more doors = less crowding and faster loading and > > > > unloading that will = shorter dwell times. Their is one problem, the > > > > base WMATA car design like the bart car has a flaw that will not > > > > easily make it possible to add more door without making the cars > > > > heavier. The flaw is the car body it an interracial part of the > > > > structure the car. Punching more holes in the car sides for door > > > > would require beefing up the under fram to compensate loss of body > > > > structural integrity. You got to remember that these car were built > > > > like cabin of an passenger jet airplane, and out of aluminium to > > > > boot. Frankly I think the more traditional way of building of > > > > passenger railroad car would have been a better choice. Stainless > > > > steel car body on a an undercarriage bearing all of the loading and > > > > buffering. > > > > I'm not sure whether this is a big issue -- how common is it to change > > > the door configuration of existing equipment? It seems to me that > > > doing so would be rather a large undertaking -- regardless of whether > > > the equipment is body and undercarriage or unibody construction -- > > > and that such configuration changes would normally be made at the time > > > that new equipment is ordered. > > > The issue is not to retrofit existing car with more door, it's > > building new cars with more door using the the same car body > > structural design. > > I'm hardly an export in this area, but I suspect that a significant > redesign would be involved no matter what body design was originally > used. It is not just a matter of chopping a new hole in the side of > the car, I don't think. True. > > > Also, I suspect that adding more doors would _always_ make the car > > > heavier, no matter what type of construction is used, because the > > > doors and their associated hardware will be heavier than the simple > > > walls they replace. > > > That is quite likely to be true, but stainless steel is pound for > > pound stronger then aluminium in this kind of application. > > I have no idea whether or not this is true (I suspect that it will > depend on how you define "this type of application"). More > importantly, I don't see how it is relevant; after all a unibody _or_ > body-on-undercarriage design can each be made of aluminum _or_ steel. Definition of "this type of application" using aluminium as part structural design of a rail car body. Another application fuel sell in a race car, cabin of a passenger jet airplane, non structural part of an automobile . . . As far as I know bart and WMATA metrorail are the only rail transit system in North America that use aluminium for there car bodies. As far as I know there has never been any railroad cars built for any kind of service in North America be it be a common carrier, rapid transit (metro or subway) system, lite rail/street car system that used aluminium in the under carriage structure. -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John Mara
Date: Sun, 08 Jul 2001 22:59
Date: Sun, 08 Jul 2001 22:59
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"John R Cambron" <*cambronj@chesapeake.net*> wrote in message news:tkh9a2hil7ue5a@corp.supernews.com... > > As far as I know bart and WMATA metrorail are the only rail transit > system in North America that use aluminium for there car bodies. Boston's Red Line cars in the 1500 and 1600 series (Pullman Standard, 1969-70) and very similar 1700 series cars (UTDC 1987 - 89) have aluminum car bodies. The more recent 1800 cars (Bombardier 1993 - 94) are stainless steel. Chicago's 2000 series "L" cars (Pullman Standard circa 1964) had aluminum car bodies. Later cars were stainless steel. Toronto's M1 H1-H6 and T1 cars have aluminum bodies. John Mara
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: John R Cambron
Date: Tue, 10 Jul 2001 00:44
Date: Tue, 10 Jul 2001 00:44
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John Mara wrote: > > "John R Cambron" <*cambronj@chesapeake.net*> wrote in message > news:tkh9a2hil7ue5a@corp.supernews.com... > > > > As far as I know bart and WMATA metrorail are the only rail transit > > system in North America that use aluminium for there car bodies. > > Boston's Red Line cars in the 1500 and 1600 series (Pullman Standard, > 1969-70) and very similar 1700 series cars (UTDC 1987 - 89) have aluminum > car bodies. The more recent 1800 cars (Bombardier 1993 - 94) are > stainless steel. > > Chicago's 2000 series "L" cars (Pullman Standard circa 1964) had aluminum > car bodies. Later cars were stainless steel. > > Toronto's M1 H1-H6 and T1 cars have aluminum bodies. I stand corrected. I also find it interesting and logical that later cars were built with stainless steel. -- ====================================================================== NT Geek, MCP Transit Geek http://www.chesapeake.net/~cambronj/wmata/ Model Railroader HO N John R Cambron http://www.chesapeake.net/~cambronj/sunbelt/ North Beach MD USA Railroad Geek cambronj@chesapeake.net ======================================================================
Re: Redbird Visit Smithsonian Folklife Festival in Washington DC
Author: Ron Newman
Date: Wed, 11 Jul 2001 13:08
Date: Wed, 11 Jul 2001 13:08
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In article <%A527.8814$EF2.845593@typhoon.nyroc.rr.com>, "John Mara" <johnmara@nycap.rr.com> wrote: > Boston's Red Line cars in the 1500 and 1600 series (Pullman Standard, > 1969-70) and very similar 1700 series cars (UTDC 1987 - 89) have aluminum > car bodies. The more recent 1800 cars (Bombardier 1993 - 94) are > stainless steel. Bringing back an earlier discussion.... The 1500, 1600, and 1700 series cars have three doors. The 1800 cars have four doors. -- Ron Newman rnewman@thecia.net http://www2.thecia.net/users/rnewman/
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