LM 321 coupling - windscreen wipers

[Bletchleyite]

Quick question.

I've noticed that when LM have two 321s coupled one of the windscreen wipers between the middle cabs is left pulled out. Why is this?

 

[DarloRich]

I have noticed this to - i assumed it to be airflow between the units flicking the wipers out

 

[SPADTrap]

I have noticed this to - i assumed it to be airflow between the units flicking the wipers out

This is correct, in my experience more often the second man's side which is convenient

 

[43367]

Ive always, stupidly i might admit, thought that it was to act as a deterrent to stop people surfing between the two units,

 

[321446]

Driver's wiper has a latch upon it which must be operated before the wiper is pulled back (to open the bonnet). This also stops the wiper from being pulled right back by the airflow between the units, so that when uncoupled the driver's side wiper away from platform side will generally flick back when wipers are operated to avoid having to climb between units to do it.


Whether that last bit is cause or effect, I'm unsure but that's how it works. Why both wipers don't have the latch, I'm at a loss to explain too!