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BBKing · 08-04-2004, 02:00

If it's that easy to break by hand presumably it would be broken in the event of a derailment? In the Severn Tunnel instance you'd want it to break if the other line was fouled, as the axle counters, even if they were working, wouldn't detect a fouling, and of course it's dark (of course you've got the poor guard slogging up the line with some detonators, which can't be fun in a wet four mile tunnel).

Can't remember off the top of my head whether the wire in 1990 was broken by hand or by contact with the trains - since it was a fairly low speed shunt I suspect by hand though, but IIRC the opposite line wasn't fouled.

Edit - teach me not to check, the crash was on December 7th, 1991.

08-04-2004, 02:00	#60
BBKing R.I.P. Join Date: Jun 2003 Location: London Services: 20Mb VM CM, Virgin TV Posts: 5,983	Re: Deprivatisation of railways If it's that easy to break by hand presumably it would be broken in the event of a derailment? In the Severn Tunnel instance you'd want it to break if the other line was fouled, as the axle counters, even if they were working, wouldn't detect a fouling, and of course it's dark (of course you've got the poor guard slogging up the line with some detonators, which can't be fun in a wet four mile tunnel). Can't remember off the top of my head whether the wire in 1990 was broken by hand or by contact with the trains - since it was a fairly low speed shunt I suspect by hand though, but IIRC the opposite line wasn't fouled. Edit - teach me not to check, the crash was on December 7th, 1991.