[Czech Republic] Tramways and Tram Lines

[historyworks]

Originally Posted by kokpit

http://www.prazsketramvaje.cz/obrazk...stavba-110.jpg
this might be the steepest tram track in Prague, at least one of the steepest (together with Troja and Barrandov tracks)

Any idea what gradient (ratio or percent)?

[Herzarsen]

This is actually not the biggest climb the Trams have to make in Prague's hilly neigbhrhoods. The steepest climb is in Troja, it is 470 meters long and has a gradient 80,15%. And the longest climb is to Barrandov. These are pictures of the Troja area.

[ov_79]

Herzasen:

Thanks for the interesting post. Don't you accidentally have a link with tram climbing percentage in CZ? I am interested in: Praha: Hlubocepy-Geolgicka; Malostranska-Chotkovy sady; Vltavska-Strossmayerovo namesti-Kamenicka-Letenske namesti; Nam.bri Synku-Nuselska radnice-Paloucek; Vrsovicke namesti-Krymska-Francouzska; Stejskalova-U Krize-Vosmikovych-Bulovka-Okrouhlicka? Brno: Jugoslavska-Tomanova-Zemedelska; Nove sady-Silingrovo namesti; Vsetickova-Heinrichova-Namesti Miru? Plzen: Pod Zahorskem-U Gery? Liberec: Vratislavice-Jablonec? Olomouc: Climbing the scaffold bridge above railway station ?

[Bobek_Azbest]

Trojská is 80.15‰.
^ Hlubočepy-Geologická should have 62‰.

Interesting places (in terms of grade) should be the "safety stops". One of them is in Jičínská street, other I know of is between stops Krejcárek and Palmovka.

Originally Posted by kokpit

this might be the steepest tram track in Prague, at least one of the steepest (together with Troja and Barrandov tracks)

Well it just looks that steep on the photo.

[historyworks]

Originally Posted by Bobek_Azbest

Trojská is 80.15‰.
^ Hlubočepy-Geologická should have 62‰.

OK guys this is where you get to find out I am a hopeless mathematician! How you render your gradient figures is different from in English-speaking countries. We use ratios (e.g. 1:10 or 1:20) or percentage - more like 10% for a typical steep tramline. I don't understand the basis of your 62% or 80% figures. Please forgive me if I am being stupid and missing something simple!

[ov_79]

Originally Posted by historyworks

OK guys this is where you get to find out I am a hopeless mathematician! How you render your gradient figures is different from in English-speaking countries. We use ratios (e.g. 1:10 or 1:20) or percentage - more like 10% for a typical steep tramline. I don't understand the basis of your 62% or 80% figures. Please forgive me if I am being stupid and missing something simple!

Not a hopeless mathematician as a blkind reader:
Trojská-Nad Trojou: 80.15‰.
Hlubočepy-Geologická: 62‰.

[historyworks]

Originally Posted by ov_79

Not a hopeless mathematician as a blkind reader:
Trojská-Nad Trojou: 80.15‰.
Hlubočepy-Geologická: 62‰.

OK I'll put it another way. Assuming your ‰ symbol (which we don't use) means the same as ours % (percent), and for us a steep tramway gradient beyond which trams would not be able to climb unassisted would be about 9% (1:10), then your amazing Prague trams must be able to climb near-vertical walls!

So I presume you must be using different measurement criteria - perhaps the reverse of the way we do it? In some of Herzasen's photos the grades look about 1:8 (11%) which is about as steep as we had in Sydney without assistance.

[kokpit]

read this http://en.wikipedia.org/wiki/Per_mil
10 permil (10‰) = 1 percent (1%), so 80.15‰ = 8.015%
now it's all clear

[historyworks]

Originally Posted by kokpit

read this http://en.wikipedia.org/wiki/Per_mil
10 permil (10‰) = 1 percent (1%), so 80.15‰ = 8.015%
now it's all clear

Phew thanks kokpit, that's all clear! Like I said you have a dud mathematician here

[historyworks]

Looking at some of your photos it is hard to believe the worst grade is only 8%, but even so your trams must have powerful motors on all wheels to take the grades. The problem with us western countries buying German and French trams is I don't think they have much understanding of severe grades. The Sydney Variotrams couldn't take the only mild grade on the line on a wet day and had to be fitted with sanding equipment! Same in Adelaide with Bombardier flexis.

Here for your entertainment was our worst - 12% grade down to Balmain ferry terminus on Sydney Harbour. The line had a counterweight and the tram pushed the dummy down the hill to help braking and the dummy helped push the tram up the hill:



I bet you don't have this problem :

[ov_79]

historyworks:

, not such problems at the moment, but I can imagine it can once happen here too.

Thanks for your passion about CZ , just a note: What about to move from AU to CZ ?

[historyworks]

I keep talking about it ov_79 but the old saying applies..."the grass is always greener on the other side of the fence"! Trouble is we talk to all these Czechs here who say, don't be crazy, Australia is much better. I say, but its so expensive here and the facilties are crap and they say yes, but you have nice beaches and sunshine

...and then when they're living here they start complaining about the schools, the hospitals, the transport...."Czech Republic is much more advanced blah blah blah"

The only solution I can see is that one day CZ will be populated by Australians and AU will be populated by Czechs!

Trouble is I wouldn't be able to winge about transport infrastructure in CZ whereas there is plenty to winge about here. I would have to find something else to do

[kokpit]

Originally Posted by historyworks

"the grass is always greener on the other side of the fence"!

This apllies to your statements too May be you are too much influenced by your Czech wife

[historyworks]

Originally Posted by kokpit

This apllies to your statements too May be you are too much influenced by your Czech wife

No definitely not - she says I am a much better Czech than she is!

We already have Czech food, Czech beer - just send some T3s over here and I will be happy!

[ov_79]

After 6 years (!) of out-of-order, the tram K2R (ev.1039) reached Brno streets again on July 4 :

[isidor]

After 4 years of out-of-order, the (in my humble opinion prettiest) tram RT6N1 is in (testing) service!! in Brno of course (Prague has given up on it's 4 pieces already)

together with 13T

http://foto.prazsketramvaje.cz/jine/...2008/index.php
Let's hope that the testing will be successful and RT6 gets it's license to normal service (13? years after construction )

[Gag Halfrunt]

Pars nova modernised one of Prague's RT6s with new motors "to increase the reliability of the vehicle that never successfully passed all the tests necessary for type recognition". Perhaps Brno has had the same work done on number 1801.

The K2R is also a Pars nova project.

[Norkey]

[headshottt]

[rejow]

kdo povoluje ty protihlukový zvěrstva v intravilánu?


... navíc v tý nejodpornější a nejlevnější variantě. Z chobotnice na letný se dělá problém, ale to že se celá Praha zahnojuje tím nejpodřadnějším šuntem nikomu nevadí.