I love this trams, in 90's and 80' s hade more trams... The presidents of town hall and carris destroyed more lines because traffic. More antique districts not have transports because this situation.
While the pantograph is unidirectional and permits higher speeds, the offset is limited to its width and the wire must be of higher tension, well suited for straight line trackage. Where the tracks are comprised of many curves of varying radius, the single pole permits offsets well beyond the trolley tracks themselves and at a lesser tension. Also, I believe the single pole system is direct current (DC) locally generated where the pantograph power is AC for longer line transmission.
Alguns trechos de Lisboa lembram Salvador, São Luis, Santos e o bairro de Santa Tereza no Rio de Janeiro. Para um brasileiro estas ruas são muito familiares.
Salvador é de estilo europeu. A noite aqui também começa a ser pouco civilizada mete facada, pancada e roubo, não investe na polícia, é o que temos....
Most lines in Lisbon are geared for pantograph use with tighter overhead wiring, but not all are - especially Route 28 as far as I know. So most cars are fitted with both to be able to go anywhere.
Initially all trams had trolley poles. When they were modernised they got new motors, driving systems and pantographs, but they kept the trooley poles. I think they are seldom used nowadays, because they "derail" too often.
![Lisbon Old Quarter 4K Walking Tour - Captions & Immersive Sound [4K Ultra HD/60fps]](http://i.ytimg.com/vi/pbBA2oAuLRY/mqdefault.jpg)
Eu quero muito ir lá também. I want very much to go there too some day, maybe next year
Seja bem vinda Marcia. Lisboa vai adorar vc .
I love this trams, in 90's and 80' s hade more trams...
The presidents of town hall and carris destroyed more lines because traffic.
More antique districts not have transports because this situation.
While the pantograph is unidirectional and permits higher speeds, the offset is limited to its width and the wire must be of higher tension, well suited for straight line trackage. Where the tracks are comprised of many curves of varying radius, the single pole permits offsets well beyond the trolley tracks themselves and at a lesser tension. Also, I believe the single pole system is direct current (DC) locally generated where the pantograph power is AC for longer line transmission.
Alguns trechos de Lisboa lembram Salvador, São Luis, Santos e o bairro de Santa Tereza no Rio de Janeiro. Para um brasileiro estas ruas são muito familiares.
sim, mas com um charme europeu e civilidade que nada tem que ver com nenhum desses locais. So qdo se conhece se sente essa diferença é gigante.
Salvador é de estilo europeu.
A noite aqui também começa a ser pouco civilizada mete facada, pancada e roubo, não investe na polícia, é o que temos....
Schöne spätbarocke Altstadt!
Does anybody know why some trams are fitted with both trolley poles and pantographs?
Most lines in Lisbon are geared for pantograph use with tighter overhead wiring, but not all are - especially Route 28 as far as I know. So most cars are fitted with both to be able to go anywhere.
WorldOfTransit :. Thanks. Makes sense!
Initially all trams had trolley poles. When they were modernised they got new motors, driving systems and pantographs, but they kept the trooley poles.
I think they are seldom used nowadays, because they "derail" too often.
Line 28 is an exception because it is used mainly by turists and the trams go slowly.
Where they must go faster they use the pantographs.