Clunking Class 156 as it slows down. Brakes?

[Ben Glasgow]

Hey all. Simple one and hopefully in the right sub-forum. Am I right in assuming the clunking you hear sometimes as a 156 pulls into a station is the brakes? Just curious.

 

[Bletchleyite]

Hey all. Simple one and hopefully in the right sub-forum. Am I right in assuming the clunking you hear sometimes as a 156 pulls into a station is the brakes? Just curious.

Tread brakes often make a rubbing sound (though 156 ones are quite quiet). The clunking, if it's the noise I'm thinking of, is the two coaches sort of "jostling" against one another as they slow at different rates. You get the same thing on LHCS but it's more of a pronounced bang.

 

[Llama]

The clunk is the three step relay/valve in the brake control unit and clunks every time the brakes are applied from 'release'. The same kit is on every other Westcode braked unit of the same era but for some reason it is a lot easier to hear on a 156.

 

[Bletchleyite]

The clunk is the three step relay/valve in the brake control unit and clunks every time the brakes are applied from 'release'. The same kit is on every other Westcode braked unit of the same era but for some reason it is a lot easier to hear on a 156.

I think that might be a different sound than I was thinking...will listen out next time! Cheers.

 

[Llama]

If you sit in a seat nearish to the cab on the left you will hear and feel this particular clunk. It can certainly be heard from within the cab. Plenty of other clunks are available though!

 

[route101]

Hear it on MK2s . On the sleeper and LHCS IE FIFE

 

[rebmcr]

Seems like exactly the same thing that can be heard from the cab of 1992 Tube Stock.