What is this under the rear of Class 92 bogie?

[wwrsimon]

Hello

 

Another Class 92 question, sorry!

 

What is this bracket highlighted on the rear of a Class 92 bogie? I took this photo of 92-010 Moliere on January 12th 2006 at Birmingham International:

 

 

Many thanks

 

Simon

 

[Titan]

First thought was an AWS receiver, but it does not look like the standard one.

It might be the ground speed sensor - it compares the wheel speed against ground speed for more accurate wheel slip control.

[wwrsimon]

55 minutes ago, Titan said:

First thought was an AWS receiver, but it does not look like the standard one.

It might be the ground speed sensor - it compares the wheel speed against ground speed for more accurate wheel slip control.

 

Thanks Titan. Isn't this is the AWS receiver on the rear of the other bogie?

 

 

[rodent279]

Could it also be for the SNCF/SNCB Krokodil AWS system?

[Titan]

1 hour ago, wwrsimon said:

 

Thanks Titan. Isn't this is the AWS receiver on the rear of the other bogie?

 

 

 

As it is mounted on the outside of the rail it will be the APC (Automatic Power Control) receiver. Works in the same way as an AWS receiver, and indeed looks just like one, but it detects the magnets fitted to sleeper ends before and after a neutral section to ensure that the loco circuit breaker is tripped and then reclosed so no current is being drawn when the train passes through.  If it gets out of sync the driver can press the "pan up" button, even if the pan is already raised and it will reset the breaker.

Edited September 12, 2023 by Titan

[wwrsimon]

Thank you once again Titan, very much appreciated. I did wonder about it being outside the rail, rather than on the centreline.

[St. Simon]

3 hours ago, wwrsimon said:

Hello

 

Another Class 92 question, sorry!

 

What is this bracket highlighted on the rear of a Class 92 bogie? I took this photo of 92-010 Moliere on January 12th 2006 at Birmingham International:

 

 

Many thanks

 

Simon

 

 

Hi Simon,

 

This is probably a combined AWS / TPWS / KVB etc receiver, or possibly a Balise reader, but unlikely.

 

2 hours ago, wwrsimon said:

 

Thanks Titan. Isn't this is the AWS receiver on the rear of the other bogie?

 

 

 

That certainly isn't an AWS Receiver (not in the centre of the four foot) or APC receiver (not far enough out), but is probably the TVM430 receiver.

 

Simon

[Titan]

3 hours ago, St. Simon said:

 

Hi Simon,

 

This is probably a combined AWS / TPWS / KVB etc receiver, or possibly a Balise reader, but unlikely.

 

 

That certainly isn't an AWS Receiver (not in the centre of the four foot) or APC receiver (not far enough out), but is probably the TVM430 receiver.

 

Simon

 It is most definitely an APC receiver, don't judge it's position using the rail as that is deceptive, note instead that it is in line with the suspension and damper on the left, which puts it in exactly the right position for an APC receiver.

Edited September 12, 2023 by Titan