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Thread: Mk. VII Orange

  1. #76

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    Re: Mk. VII Orange

    Quote Originally Posted by MarkTwain View Post
    I'm sure Disney considered this but... can they not simply air-condition the monorails?
    That's been discussed several times; comes down to the beam not having enough power.

  2. #77

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    Re: Mk. VII Orange

    Quote Originally Posted by Nautilus View Post
    That's been discussed several times; comes down to the beam not having enough power.
    Figured as much about the power. Sorry about that, I suspected it had been discussed previously...

  3. #78

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    Re: Mk. VII Orange

    Quote Originally Posted by Nautilus View Post
    That's been discussed several times; comes down to the beam not having enough power.
    Also, aren't the monorails already too heavy to accomidate AC units?

  4. #79

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    Re: Mk. VII Orange

    Quote Originally Posted by pianoman13 View Post
    Also, aren't the monorails already too heavy to accomidate AC units?
    Nope, that's a myth. Tnat beam can hold a lot more than what it holds now. Its all about ppower
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  5. #80

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    Re: Mk. VII Orange

    Quote Originally Posted by Eric5675 View Post
    Nope, that's a myth. Tnat beam can hold a lot more than what it holds now. Its all about ppower
    How do you know the beam can hold a lot more weight? It's already visibly sagging in several areas and the hills and valleys of the beamway is pretty much what caused the other four trains to rip themselves apart.

    And it seems like it would be much cheaper to retrofit the electrical system than the beamway.

  6. #81

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    Re: Mk. VII Orange

    You know, since the work on the DCA monorail bridge is on the horizon, that section would be shut down, so why not shut down the whole system? Give time to fix the monorails themselves and retrofit the beamway. Of course they'll need you know what to do it...$$$$$$$$

  7. #82

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    Re: Mk. VII Orange

    Quote Originally Posted by Eric5675 View Post
    Nope, that's a myth. Tnat beam can hold a lot more than what it holds now. Its all about ppower
    Quote Originally Posted by MrLiver View Post
    How do you know the beam can hold a lot more weight? It's already visibly sagging in several areas and the hills and valleys of the beamway is pretty much what caused the other four trains to rip themselves apart.

    And it seems like it would be much cheaper to retrofit the electrical system than the beamway.
    They might not have cast the beams that are sagging precisely right, and besides that was 50 years ago, before computers and finite element analysis to tell them down to the millimeter.

    In those days it was both an art and a science making precast and pre-stressed concrete, now they have added more Science and subtracted some of the Art - but not all.

    They have to figure all the elevation rise or fall, and all the turns, twist or superelevation of turns (so the train leans in toward the inside of the turn properly at speed) and such for that particular segment of beam. The computer (or the trained engineer of the old days) places the steel reinforcements and the tensioning cables in precise alignment so the pull is where and as strong as needed.

    Then they dial all those geometry factors into the sliding sides and bottom of the steel molds for the beam - and put in a little extra arch in the mold as a "fudge factor" for the inevitable little bit of sagging once it's in place. If they didn't put in enough arch... Then you get sagging as it ages.

    As for the electrical supply, that's easy to beef up to have enough juice for AC in the cars - just not cheap.

    And the cars should be able to handle a bit more weight - they have reduced the passenger loads with the revised seating plans. So as long as they didn't over-engineer the new chassis and bodies to weigh a lot more, and don't overload the load tires, they are fine.

    But the air conditioners won't be any cheaper than the power system upgrades, plus doing it as a rertrofit costs a lot more than engineering it in at the beginning of the project. It wouldn't surprise me to top a million a train to put in the AC, plus a few million for the power system upgrades.

    Yeah, gets expensive fast when there are Unions and Big Corporations and complex contracts involved.

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