Re: Loco cab safety

["Dave Proctor" <daproc@sd5.mailbank.com>]

Maurie Daly <mauried@commslab.gov.au> wrote in message
mauried.486.38449890@commslab.gov.au">news:mauried.486.38449890@commslab.gov.au...

> For what its worth, just recently since the hot weather has started, there
> seems to be a marked increase in the failure rate of the 2nd unit on NR
trains
> between Goulburn & Harden, usually on the 1:40 grades near Bowning or
Jerrawa.
> What seemed odd was that it was always usually the no 2 unit , not the
leading
> one.
> Just about all NR trains on this corridor have 2 NRs or more.
> Is there any obvious reason why its more likely that a 2nd unit will fail
in > preferance to the lead unit?

Only thing that I can think of (and I am untrained) is maybe the airflow
characteristics are causing the units to overheat and fail? Being second
units, the leading unit *could* be interfering with the the airflow to them.
Do you know if it does it to a third unit? (Not that there would be many
triple-NR's running on that corridor).

--
DaveProctor
thadocta AT dingoblue.net.au