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Ray Dunakin
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| Joined: | Wed Jul 25th, 2012 |
| Location: | San Diego |
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Cool little incline tram, too bad it's been trashed by &#@ taggers.
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Visit http://www.raydunakin.com to see photos of the rugged and rocky In-ko-pah Railroad!
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Helmut
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| Joined: | Sun Feb 17th, 2013 |
| Location: | Friedberg, Germany |
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It's surprising how well-mannered car drivers and pedestrians behave in tight spots.
I have my almost daily comparison in Istanbul near Sirkeci Station,
where everybody seems to be concerned about delaying the trams whenever they attempt to pass.
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Regards, H.
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Herb Kephart
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Great videos, Bill--thanks!
OK now you guys who figure that 'lectric overhead is the way to go for the real thing,
what did you notice about the incline cars?
Yes they had two pantographs--most likely they are three phase power,
and yes they have an extra, offset rail, which is probably an extra form of braking (shoe jams into slot).
But there is something else, VERY unusual!
Look again at the second video--particularly 1:29 to 1:35
The pantographs have wheels!
Wonder how they can keep them on the wire, because the pantographs can't move sideways (too much mass for the wire to move),
almost impossible that the wire is hung with enough accuracy to line up with the wheel in a curve,
and if the wheels slide sideways on the horizontal top bar, how do they maneuver them to align with the wire when putting the pan up?
Conspiring minds want to know!
Herb
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Fix it again, Mr Gates--it still works!"
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Salada
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| Joined: | Mon Nov 4th, 2013 |
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Thanks for your YouTube link Bill; your first link is definitely of Route 28.
Lisbon has three relatively unusual public transport systems : electric NG trams, ascensores & elevadores.
For ascensore, read elevator (for our US friends), see photo below :
- an ascensore is a vertical, electrically hoisted passenger car giving access to the streets higher up.
An elevadore is perhaps more widely known as a funicular, as seen on Bill's video links. Funiculars are always cable hauled.
I am not entirely certain but I believe the Lisbon funiculars are standard funiculars
i.e. cable hauled via the "slot" between the rails (it is not a 3rd rail).
Herb:
I'm sure they are not 3 phase (the traction system is cable) but why do they need a 2 pole 'pantograph' ?
I don't know.
Communication with the control/winding cabin crew ?.
Non si sa as they say.
Regards Michael
ps: I would call the SF system a cable hauled tram (US streetcar ?) - some is steep eneough to be similar to a funicular but other sections are fairly level.
The essential difference is that the SF system works via an endless, constantly running, cable with each car having a cable grabber, or clutch.
A funicula is more 'self-balancing'.
The two cars are attached to either end of a length of haulage cable that runs between them via a driving wheel/brake/traction motor at the summit.
As one car descends it helps to raise the ascending car - very "green" & energy efficient, long before anyone invented "global warming".
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Helmut
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@Michael
Shame on me, yes the Lavra system is a funicular with two balanced cars.
Interesting to note that in 1875 they demonstrated this by building an underground line in Istanbul ( my 2nd hometown ), also powered by two steam winders at first.
This set off a full-fledged funicular rage in all the European capitals.
Of course you can run 3-phase AC operation with two wires and the rails as ground.
FS ( You should know well, eh? ) had such a system in operation from 1902 -1976.
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Regards, H.
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Salada
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Hello Helmut,
Were FS the only people to try the 2 pole wires & ground 3 phase ?. I don't know of anywhere else.
For our US friends, FS = Ferrovie dello Stato (Italian State Railways).
Regards Michael
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| Posted: Thu Apr 10th, 2014 02:32 am |
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19th Post |
Herb Kephart
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OK then, the two overhead wires must be power for car lighting.
Realize now that those little wheels running rather loose on a small diameter shaft would cause a spectacular show with traction current.
Herb
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Fix it again, Mr Gates--it still works!"
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| Posted: Thu Apr 10th, 2014 05:14 am |
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20th Post |
Kitbash0n30
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The things ya learn around here!
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See y'all later, Forrest.
Screw the rivets, I'm building for atmosphere
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