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Two Ideas For Space Saving Trackwork
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 Posted: Mon Mar 17th, 2014 10:44 am
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Salada
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Black Hills winter suntan ?!.

If you want to see serious tramline grades & narrow streetrunning I'll upload some more photos to the FR Gallery  -  watch this space later on.

Regards              Michael

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 Posted: Mon Mar 17th, 2014 08:58 pm
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Salada
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The steepest grades are around the old part of town, the Alfama district. The angle of the door & window lintels of the roadside buildings relative to the tram superstructure will give you an idea - I tried to hold the camera as horizontal as possible :









A very short length of 'gauntlet'/interlaced track around a tightly curved double line track:





A passing loop on otherwise single track :





And some typical narrow street running :













Regards                     Michael

 

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 Posted: Mon Mar 17th, 2014 11:49 pm
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pipopak
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After seeing all those nice pics I arrived to the conclusion that the prototype does not give a hoot about giving we modellers a run for our money.  Jose.



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 Posted: Fri Apr 18th, 2014 10:23 pm
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pmkramer
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Found this pic on Wikipedia from Liberec, Czech Republic.

It's from an article on Jump Frogs, which I had not heard of before and is interesting.

http://en.wikipedia.org/wiki/Flange_bearing_frog



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 Posted: Sat Apr 19th, 2014 01:53 pm
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Herb Kephart
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You could have a world of fun over there with a can of grease----


Herb



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 Posted: Sun Apr 20th, 2014 12:53 pm
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Salada
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I thought Frog Jumping had been banned by the EU on animal right's grounds.

Looks like they based that layout on a Herb (TM) Design !!.


Regards                                        Michael

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 Posted: Sun Apr 20th, 2014 01:52 pm
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Herb Kephart
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Michael-

Filling the (model ) frogs with solder, then recutting the flangeways to just the right depth has long been a practice in the trolley model world.

Filling real frogs with solder makes them croak.


Herb



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 Posted: Sun Apr 20th, 2014 03:42 pm
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Salada
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Herb:
I've often seen full size old tramway frogs the same in England - the iron casting is much shallower than normal between the rail-head & the 'body' of the frog casting - to the extent that you can see additional grooves cut by the tram flanges.

Any idea why they depart from standard RR practice  ?? (I don't know why).

Regards                            Michael

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 Posted: Mon Apr 21st, 2014 01:09 am
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Herb Kephart
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There was a problem with street trackage in the early days, with iron tired wagons and particularly carriages, getting stuck in too wide flange grooves, so the industry went with the narrowest practical groove in the girder rail, to try to lessen the problem.
When I was a kid growing up in Philadelphia, milk delivery, some bread delivery, all city owned trash and ash collection wagons, Ditto street sweepers were horse drawn. Back then, it was possible for an individual in some sections of the city, to rent a horse and wagon (usually a cast off milk wagon) and travel though neighborhoods that the city hadn't got to yet and pick metal out of the trash at the curb. Their wheels were much too wide to fall into the flangeways, but did fit very nicely on the flat running surface of the rail which gave a much smoother ride than the Belgium block stone paving in between and for a foot or so outside the rails. The horses that came with the rental wagons were as used up as the wagons, and moved at a snail's pace. A trolley would come up behind one, and after a short distance would start clanging the gong for the guy to get out of the way--but many times I saw this going on, and never do I remember the wagon pulling over and letting the trolley past-- they would just continue clop     clop     clop     clop    pretending deafness while the frustrated motorman was jumping up and down on the gong pedal. We kids would laugh at the whole thing, and once we figured out that this annoyed the motorman even more, the guffaws and pointing became even more intense.

And before some wise a$$ asks, no, the dinosaurs were gone by then.


Herb



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 Posted: Mon Apr 21st, 2014 11:41 pm
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Salada
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Herb:

" ..the dinosaurs were gone by then."

Presumably swept away by the street cleaners ??!!.

Interesting contrast : despite the general chaos of Italian/Portuguese streets, most car drivers do, reluctantly, respond & give way to street tramcar gongs.


Regards                          Michaelosaurus

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