Certain or individual Class 323's showing their age?

[AlphaHotel]

As I'm sat here writing this, its happened a few times, im not sure if its a few or just one of them but they almost feel like they are struggling to take power, for example on the power out of a station they will almost nearly stall as for lack of a better word. Im not sure if it's the actual train its self or what.

Cross city line for references.

If anyone knows anything feel free to share with me

== Doublepost prevention - post automatically merged: 17 Feb 2022 ==

Edit: I was on 323243

 

[Spirit555]

Depending on station. From personal experience of XCity line they are having problems taking power, mainly down to slippery/greasy rails. This also applies when stopping. A sudden judder of brakes when trying to stop.

The units are still working well in normal weather conditions AFAIK.

Mark

 

[12guard4]

Doubt they'd be in service if they was struggling to take power.

 

[Spirit555]

Doubt they'd be in service if they was struggling to take power.

Being unable to pull away easily would probably sound like power issues but they have to ease off and try again. this creates a feeling of no power, sometimes jolting the train, which I have personally endured and then all of a sudden they power away have found some grip on the rails.
What also contributes to if a unit has a traction motor isolated. That causes slow power take up as well

 

[AlphaHotel]

Being unable to pull away easily would probably sound like power issues but they have to ease off and try again. this creates a feeling of no power, sometimes jolting the train, which I have personally endured and then all of a sudden they power away have found some grip on the rails.
What also contributes is if a unit has a traction motor isolated. That causes slow power take up as well

Yesss! this is exactly it, the juddering could be misinterpreted as struggling to take power. I could see how lack of grip could contribute to it

 

[Spirit555]

Having spoken to a friend who works regularly with the 323's he tells me that there are a few with a traction motor isolated at present.

Mark

 

[12guard4]

A traction motor being isolated won't result in a jerking it will be smooth and slow to accelerate. If the weather is wet there may be some poor adhesion but this time of year is generally not too bad. That can affect any unit though not specific to 323s.

 

[Halish Railway]

A traction motor being isolated won't result in a jerking it will be smooth and slow to accelerate. If the weather is wet there may be some poor adhesion but this time of year is generally not too bad. That can affect any unit though not specific to 323s.

I was on a 323 between Manchester Piccadilly and Manchester Airport (All stations) in late 2019 and it certainly sounded like the traction motors in the lead carriage were isolated.

In spite of this it felt quicker off the line than a 319 and had no problems with timekeeping. I don’t know if this goes to show how good the 323s are or how rubbish 319s are.

 

[MCR247]

The cross city line (especially between New St - Selly Oak) is very bad for poor adhesion and what you describe sounds most like wheelslip to me.