Calder Valley line - stock allocation

[anti-pacer]

I have used services between Leeds-Todmorden a fair bit recently, and have observed what stock is used on certain services.

These are my findings;

142/144's used on stoppers via Dewsbury
150's used on semi-fasts via Halifax
158's used on stoppers via Halifax

Now, I understand the first one, despite my loathing of said stock, but I don't get why 150's are used on semi-fasts, when 158's are used on stoppers. To me this should be the other way around.

 

[PHILIPE]

I do not have access to FNW Diagrams, but may be part of a larger picture which depends on what they work the rest of the day.

 

[Silv1983]

155s run on the Caldervale aswell.

Perhaps 158s are used for stoppers because of their superior braking and acceleration.

Saying that I recently learned the route from Victoria to Hebden Bridge and back and when I was front ending the type of stock and whether it stopped or not was random.

 

[Anvil1984]

The majority of interworking is (all via Bradford)

Leeds - Manchester Vic semi fast
Manchester Vic - Selby semi fast
Selby to Huddersfield
Huddersfield - Leeds
Leeds - Man Vic Stopper
Man Vic - Leeds Stopper

Then it all starts again, obviously units will start at different parts of thid interworking but you often find the 158s (including a 3 car) on an early stopping service IIRC.

The "via Dewsburys" interwork at Leeds most of the time so it goes Leeds - Man Vic - Leeds - Huddersfield - Leeds

 

[northwichcat]

When I used the Calder Vale line a couple of weeks back at off-peak times it seemed to be 155s and 2 car 158s on the express services (the ones that don't call at stations between Rochdale and Todmorden) and a mix of 142s, 3 car 144s and 150s on the other services.

 

[northernchris]

It is partly to do with ensuring the higher capacity stock is in the right places for the peak periods, so whilst the 1637 Leeds - Manchester stopper is allocated to a 3 car 158 the 1448 Manchester - Selby semi fast is allocated a 150. It also means all Calder Valley services out of Leeds (excluding the Brighouse/Huddersfield service) from 1607-1807 are allocated a minimum of 3 car sprinter stock