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Author Topic: Back when America BUILT stuff  (Read 46351 times)

Raptor

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Re: Back when America BUILT stuff
« Reply #125 on: November 22, 2021, 12:00:54 pm »
Blind driving wheels (i.e. no flanges) were not uncommon on steam locomotives, though IIRC in the US those were typically used on narrow-gauge locos that ran on lines with extremely tight turning radiuses.  Never heard of drivers that could move side-to-side before. I suspect the damage wrought by the AA-20 was a result of the locomotive's massive size and weight rather than the flangeless drive wheels.

N&W 611, for example, is the largest and heaviest piece of equipment to ever operate on the Strasburg Rail Road, so when she visited for the first time back in 2019, there were serious concerns that she might damage the track, especially the switches.  Fortunately, the track held up just fine (though you could hear the rails squealing in protest when she passed over some of the tighter-radius curves going into and out of switches).
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    coelacanth

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    Re: Back when America BUILT stuff
    « Reply #126 on: November 22, 2021, 12:43:43 pm »
    I imagine that the loading of the contact points between the wheels and the rails would have been tremendous in that case and probably caused mechanical deformation as well as heavy abrasion in places.  My reference was to the notation that the trains using that locomotive frequently derailed.

    That can be caused by a number of things but the whole point of the flanges on the wheels is to keep that from happening.  Fewer flanges would reduce the ability of the system to operate safely - IMO. 

    I like the fact that this is the only forum, not actually dedicated to railroads, where I can discuss such things.   :thumbup1
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    Raptor

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    Re: Back when America BUILT stuff
    « Reply #127 on: December 03, 2021, 12:48:27 pm »
    Holy CRAP!  I'd heard about this years ago, but figured it was either a scam to bilk naïve railfans or else well-intentioned but wouldn't ever go anywhere.  But it's legit and they're actually doing it!  And they appear to be succeeding.

    Long story short, a bunch of die-hard railfans have formed a trust and are building a life-size replica of a Pennsylvania Railroad T1-Class duplex steam locomotive.

    PennsylvaniaNon Timebo Mala -- I Will Fear No Evil

    “Libprogs want conservatives to be silent. Conservatives want libprogs to keep talking so the world can see just how full of sh*t they are.” – Larry Correia

    "When the odds are impossible, count on crazy." - JesseL

    coelacanth

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    Re: Back when America BUILT stuff
    « Reply #128 on: December 05, 2021, 01:00:29 pm »
    Ambitious.  Very ambitious.   :cool   
    Arizona" A republic, if you can keep it."

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