[Archive] Questions on MRT/LRT

• Interception_7

  13 Mar 10, 22:40

  Originally posted by Samuel Lee:

  Yah, I am talking about wheelslip, but SMRT and most other Mass Rapid Transit system (MTR in Hong Kong, Japan Subway etc) does not heard of sanding. Somewhere earlier got post questions on it.

  Yeap, they do experience wheelslip.

  However, they just need to release power each time they experience wheelslip. Like, if they drove in P2 and then got wheelslip, they just reduce it to P1 or maybe neutral.

• Amir95express

  19 Mar 10, 15:06

  can SMRT fix the wheelslip problem or is it a natural occurence?

• Samuel Lee

  19 Mar 10, 15:33

  Originally posted by Amir95express:

  can SMRT fix the wheelslip problem or is it a natural occurence?

  Natural occurence when bad weather.

   

  So, the TO just lower the power gear like abovementioned will do.

• c751bLoVuR

  20 Mar 10, 18:49

  Anyone know why Yio Chu Kang Station need this? Why not "to Jurong East via Woodlands"

  

• Interception_7

  20 Mar 10, 22:32

  Originally posted by Amir95express:

  can SMRT fix the wheelslip problem or is it a natural occurence?

  It is a natural phenomenon.

  As I've mentioned before, they just have to reduce the speed, and apply it slowly and gradually until the wheelslip is gone...

  For other types of trains, such as the KTM locomotives(the only one that I can think of), the problem can be solved using sanding. When activated, a sandbox that contains sand will be dropped onto the rails to improve adhesion. Most modern locomotives are fitted with a wheelspin detector which hereby informs the driver is a wheelslip is happening.

  As SMRT does not have any sanding options, all they can do is just to lower the power, and increase it back slowly.

   

• joeyfjj

  20 Mar 10, 22:58

  Originally posted by Interception_7:

  It is a natural phenomenon.

  As I've mentioned before, they just have to reduce the speed, and apply it slowly and gradually until the wheelslip is gone...

  For other types of trains, such as the KTM locomotives(the only one that I can think of), the problem can be solved using sanding. When activated, a sandbox that contains sand will be dropped onto the rails to improve adhesion. Most modern locomotives are fitted with a wheelspin detector which hereby informs the driver is a wheelslip is happening.

  As SMRT does not have any sanding options, all they can do is just to lower the power, and increase it back slowly.

  And that is most likely why CM mode must be used when it's raining...

  Basically in simple English, the wheels lose grip of the track and spins quickly without pulling/pushing the train forward.

• Kawasaki C751B

  21 Mar 10, 10:25

  Which C151s uses windows made by Duolite?

• Veyron16.4

  21 Mar 10, 10:30

  Originally posted by Kawasaki C751B:

  Which C151s uses windows made by Duolite?

  001/002, 035/036 and another C151(i think 083/084)

• Kawasaki C751B

  21 Mar 10, 10:38

  Originally posted by Veyron16.4:

  001/002, 035/036 and another C151(i think 083/084)

  
  003-004 uses it too. I saw it yesterday.

• TIB888M

  21 Mar 10, 11:33

  Hi, tried searching but couldn't find information on

   

  1) Height of train door

  2) Height of platform screen door in underground stations (should be about the same as 1 right?)

  3) Height from train floor to bottom of handgrip beside the door

   

  of smrt trains. By any chance does anyone know the exact measurements? Or any kind soul can measure it? Thank you!!

• Veyron16.4

  28 Mar 10, 12:07

  I have a brainwave......How about compiling all our compilations into a DVD.

• LTnF1fan

  28 Mar 10, 12:09

  wheel slip? is it something created by ourselves or is it really said by the professionals. I was corrected by some personnel when I said wheel, and the correct term should be bogie (bogi?)...

• Interception_7

  28 Mar 10, 12:38

  Originally posted by LTnF1fan:

  wheel slip? is it something created by ourselves or is it really said by the professionals. I was corrected by some personnel when I said wheel, and the correct term should be bogie (bogi?)...

  
  As I've said, wheelslip is a natural phenomenon.

  The wheel and bogie is two different things. Bogie is a chassis that is attached to the train.

   

• LTnF1fan

  28 Mar 10, 12:49

  Ok, then you trying to say the wheel is part of the bogie, is it? Cos I very confused.

• Interception_7

  28 Mar 10, 12:56

  Originally posted by LTnF1fan:

  Ok, then you trying to say the wheel is part of the bogie, is it? Cos I very confused.

  
  Yes, the bogie has a wheel attached. Get the picture ?

• LTnF1fan

  28 Mar 10, 12:59

  I see. Ok, thanks a lot!

• Interception_7

  28 Mar 10, 13:12

  Originally posted by LTnF1fan:

  I see. Ok, thanks a lot!

  
  Ok. Just to make it clearer, I attached two pictures from Google. Credits to the contributor.

  BOGIE:

  

  (Pic from: http://www.vukv.cz/vyvoj/e-p.html)

  WHEEL:

  

  (Taken from my FB account. During depot tour.)

  I hope it'd be much more clearer now. (:

• LTnF1fan

  28 Mar 10, 13:17

  Thank you.

• Amir95express

  28 Mar 10, 13:30

  Can Singapore build a bullet train line running from:

  Changi Airport>Pasir Ris>Punggol>Woodlands>Joo Koon

  Can or not?

• QX179R

  28 Mar 10, 13:34

  Originally posted by Amir95express:

  Can Singapore build a bullet train line running from:

  Changi Airport>Pasir Ris>Punggol>Woodlands>Joo Koon

  Can or not?

  u wanna the cost of transport to increase like the recent COE..

• NickLimâ„¢

  28 Mar 10, 13:43

  Originally posted by Amir95express:

  Can Singapore build a bullet train line running from:

  Changi Airport>Pasir Ris>Punggol>Woodlands>Joo Koon

  Can or not?

  Cannot.

• Samuel Lee

  28 Mar 10, 13:47

  Originally posted by Amir95express:

  Can Singapore build a bullet train line running from:

  Changi Airport>Pasir Ris>Punggol>Woodlands>Joo Koon

  Can or not?

  Can not now and NOT bullet train.

  These portion is possible under a normal MRT system (Like C751A like or C830 etc)

  Changi Airport>Pasir Ris>Punggol>Woodlands (Probably Sembawang)

  However Woodlands / Sembawang > Joo Koon is unlikely.

  The line is North Shore (or North Coast) Line.

• Interception_7

  28 Mar 10, 13:53

  Originally posted by Amir95express:

  Can Singapore build a bullet train line running from:

  Changi Airport>Pasir Ris>Punggol>Woodlands>Joo Koon

  Can or not?

  
  Singapore so small bullet train for what? Before implementing such projects, it must be feasible enough before it can continue.

  If got bullet train, my butt haven't get hot already have to alight. LOL.

• LTnF1fan

  28 Mar 10, 13:54

  Stupid ar. Bullet train travel at 100+ to 300+ etc km/h. Changi to Boon lay still reasonable lah. To pSR???

• Amir95express

  28 Mar 10, 19:28

  Originally posted by Interception_7:

  
  Singapore so small bullet train for what? Before implementing such projects, it must be feasible enough before it can continue.

  If got bullet train, my butt haven't get hot already have to alight. LOL.

  But if i measure between those stations, they are at least 5-9 km apart. And in Japan, the stations are at least 9 km apart. But the bullet train in singapore can only up to 120 km/h to minimise impact on the environment.(noise pollution) Whereas in Japan, the trains can go up to 230 km/h and far from populated areas, right?

  One more thing, if this is possible to build, would it be elevated or underground?