Altamont Press Discussion Board :: Discussion :: Re: Over the years, there has been some speculation.....?

Re: Over the years, there has been some speculation.....?

Author: BOB2

Date: 09-27-2020 - 01:59

synonymouse Wrote:
-------------------------------------------------------
> Over the years there has been some speculation
> that BART elevateds would require a rebuild if
> structurally stronger and presumably heavier cars
> were indicated.
>
> I also thought there may be some greater tendency
> toward horizontal and vertical oscillation with
> rubber tyred vehicles. Tires flex some but steel
> wheels do not. So you get a longer monorail train
> and it wants to "shake, rattle, and roll"?
>
> And add on subsidence of the guideway support
> pylons and you get a thumpety-thump; certainly on
> the Seattle line. Perhaps that is not so much a
> factor on the newer monorails.
>
> Sao Paulo had a tire problem recently with their
> #15 monorail line which took some months for
> Bombardier to sort out to put the line back in
> operation.
>
> You have to wonder why Sao Paulo has not tried any
> light rail AFAIK; heavy subway, monorail and
> thousands of buses. Gigantic population and
> really substantial demand for public transport.
> Plus seems lots of recent refugees from Venezuela,
> etc. LaLa on steroids.

Over the years, there has been some speculation, as well, that you are able to pull some pretty amazing stuff, right out of your a$$...

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Subject	Written By	Date/Time (PST)
Is there a practical limit to length of monorail trains?	synonymouse	09-25-2020 - 10:46
Re: Is there a practical limit to length of monorail trains?	trackwalker	09-25-2020 - 15:33
Re: Is there a practical limit to length of monorail trains?	Footloose	09-25-2020 - 16:35
Re: Is there a practical limit to length of monorail trains? It depends on many factors....	BOB2	09-26-2020 - 06:26
Re: Is there a practical limit to length of monorail trains? It depends on many factors....	synonymouse	09-26-2020 - 11:21
Re: Over the years, there has been some speculation.....?	BOB2	09-27-2020 - 01:59

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BOB2 Wrote:
-------------------------------------------------------
> synonymouse Wrote:
> --------------------------------------------------
> -----
> > Over the years there has been some speculation
> > that BART elevateds would require a rebuild if
> > structurally stronger and presumably heavier
> cars
> > were indicated.
> > 
> > I also thought there may be some greater
> tendency
> > toward horizontal and vertical oscillation with
> > rubber tyred vehicles.  Tires flex some but
> steel
> > wheels do not.  So you get a longer monorail
> train
> > and it wants to "shake, rattle, and roll"?
> > 
> > And add on subsidence of the guideway support
> > pylons and you get a thumpety-thump; certainly
> on
> > the Seattle line.  Perhaps that is not so much
> a
> > factor on the newer monorails.
> > 
> > Sao Paulo had a tire problem recently with
> their
> > #15 monorail line which took some months for
> > Bombardier to sort out to put the line back in
> > operation.
> > 
> > You have to wonder why Sao Paulo has not tried
> any
> > light rail AFAIK; heavy subway, monorail and
> > thousands of buses.  Gigantic population and
> > really substantial demand for public transport.
> 
> > Plus seems lots of recent refugees from
> Venezuela,
> > etc.  LaLa on steroids.
> 
> Over the years, there has been some speculation,
> as well, that you are able to pull some pretty
> amazing stuff, right out of your a$$...

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