End-of-Life Upgrade for Kawasaki Heavy Industries C151

[Ethan777]

The article implies the supposed 2 trains were installed with PMSM last year and underwent testing too. Isnt that a little misleading? 

As far as we have spotted, so far only 1 KHI is MIA. No other KHI has, as far as i can remember.

In reality, i guess they will MIA the 2nd train for PMSM install and trial once they can get the first one(131/132) to go back RS?

well sometimes you can only take what the media says with a pinch of salt. 

What IF SMRT changed its mind and took only one train (ie. 131F) away from service and trialled it for PMSM all these while? Information from the media MAY NOT always be 100% accurate and current. Who knows, ST info is not very current. 
 
Hence, for now, I would only think that there is one train missing from service and under PMSM trial and that is 131F. To find out which is the second train, we can only observe all the other KHI sets, whether on service, re-signalled and on service or completely missing for a long time.

Now that both are on revenue, would you still say SMRT was misleading or was the article misleading? 

Since now we.know, at least now I can say the article isn't misleading.



Just that back then, I was quite surprised that the 2nd train was alr undergoing the upgrade so fast as compared to my .original prediction that they will RS the first then MIA the.2nd.

[nakanoben]

The article implies the supposed 2 trains were installed with PMSM last year and underwent testing too. Isnt that a little misleading? 

As far as we have spotted, so far only 1 KHI is MIA. No other KHI has, as far as i can remember.

In reality, i guess they will MIA the 2nd train for PMSM install and trial once they can get the first one(131/132) to go back RS?

well sometimes you can only take what the media says with a pinch of salt. 

What IF SMRT changed its mind and took only one train (ie. 131F) away from service and trialled it for PMSM all these while? Information from the media MAY NOT always be 100% accurate and current. Who knows, ST info is not very current. 
 
Hence, for now, I would only think that there is one train missing from service and under PMSM trial and that is 131F. To find out which is the second train, we can only observe all the other KHI sets, whether on service, re-signalled and on service or completely missing for a long time.

Now that both are on revenue, would you still say SMRT was misleading or was the article misleading? 

Since now we.know, at least now I can say the article isn't misleading.


Just that back then, I was quite surprised that the 2nd train was alr undergoing the upgrade so fast as compared to my .original prediction that they will RS the first then MIA the.2nd.

Well, they are your predictions after all. Your predictions may not be accurate, so i think its unfair for you to say that the article is inaccurate. 

Anyway on the topic of PMSM, i have moved the change out of Siemens to the Siemens refurbishment thread. 

Also btw, anyone noticed that the braking for the PMSM seem to be more gentle ? As in it doesnt seem to make you fly forward as much when it brakes? 

[A380Lover]

The article implies the supposed 2 trains were installed with PMSM last year and underwent testing too. Isnt that a little misleading? 

As far as we have spotted, so far only 1 KHI is MIA. No other KHI has, as far as i can remember.

In reality, i guess they will MIA the 2nd train for PMSM install and trial once they can get the first one(131/132) to go back RS?

well sometimes you can only take what the media says with a pinch of salt. 

What IF SMRT changed its mind and took only one train (ie. 131F) away from service and trialled it for PMSM all these while? Information from the media MAY NOT always be 100% accurate and current. Who knows, ST info is not very current. 
 
Hence, for now, I would only think that there is one train missing from service and under PMSM trial and that is 131F. To find out which is the second train, we can only observe all the other KHI sets, whether on service, re-signalled and on service or completely missing for a long time.

Now that both are on revenue, would you still say SMRT was misleading or was the article misleading? 

Since now we.know, at least now I can say the article isn't misleading.


Just that back then, I was quite surprised that the 2nd train was alr undergoing the upgrade so fast as compared to my .original prediction that they will RS the first then MIA the.2nd.

Well, they are your predictions after all. Your predictions may not be accurate, so i think its unfair for you to say that the article is inaccurate. 

Anyway on the topic of PMSM, i have moved the change out of Siemens to the Siemens refurbishment thread. 

Also btw, anyone noticed that the braking for the PMSM seem to be more gentle ? As in it doesnt seem to make you fly forward as much when it brakes? 

I find the braking sounds like "toilet flushing" sounds.

[SBS3118B]

From the PMSM videos I watched from:
http://forums.sgtrains.com/showthread.ph...191&page=2

I observed that the PMSM sound tend to be increase in volume when the train was about to stop, perhaps this sudden increase volume of sound when stopping contributes to the gentler braking of the trains.

[nakanoben]

Imo i think its becos of the full regen, i think PMSM cuts down on the use of Rheostatic brakes and Dynamic brakes, while relying more on regen brakes to stop the train, hence making it feel more gentle 

[Ethan777]

Imo i think its becos of the full regen, i think PMSM cuts down on the use of Rheostatic brakes and Dynamic brakes, while relying more on regen brakes to stop the train, hence making it feel more gentle 

Friction brakes are definitely still present right?

And now with a newer motor, does that also mean a more reliable/advanced regen brake system hence there will be lesser occurrences of the regen brake not working as seen on current KHIs occasionally.

[nakanoben]

Imo i think its becos of the full regen, i think PMSM cuts down on the use of Rheostatic brakes and Dynamic brakes, while relying more on regen brakes to stop the train, hence making it feel more gentle 

Friction brakes are definitely still present right?

And now with a newer motor, does that also mean a more reliable/advanced regen brake system hence there will be lesser occurrences of the regen brake not working as seen on current KHIs occasionally.

I am not really sure honestly, but I think it is still present. Definitely the reliability will improve, but Regen brake isn't just about the motor   

[A380Lover]

I am wondering why it sounds like "toilet flushing" when braking and accelerating?

[Path Light]

007/008 and 047/048 should be the next C151 to get PMSM Motor

[C151 - 061/062]

007/008 and 047/048 should be the next C151 to get PMSM Motor

Indeed your prediction is wrong. These trains you had mentioned were spotted on Saturday by me. 007/008 and 047/048 were running on EWL and NSL respectively without PMSM motor.