Agree with @mossdaleNgaugeRailway. Signalling systems which rely on track circuits to detect the presence of trains aren't good at detecting lightweight trains (think 142s) on rails that barely see any use, or can get contaminated in oil, fuel or other contaminant. The wavy steip is usually welded ontop of the rail, and as such will usually stay shiny when the wheel passes over them, thus ensuring an electrical short is made, and the track circuit detects the train. It is not a warning to drivers approaching a buffer stop. Former Signaller and current train driver.
Looking forward to seeing the progress on Watford. guys. When building Iveco house and the station have you taken into account the fact that the station entrance is at a lower level to the platforms ?.
No for track circuits as the whole rail is a detected. the ends or sections are wired directly, the wavy steel bar is for feel and sound when closing in on buffer stops or emergency cross overs, it's too rough a ride for general use on the main lines.
@@davidchurchill , you are correct, the serrations are there to ensure oil, dirt and grease doesn't cause a build-up and lead to trains 'disappearing' off track circuits, thus showing that the section is occupied. everyone seems to wrongly think that they are attention getting rumble strips....
The wavy strips are for a tactile notice of a stop or slow on cross overs, I went over one set on an additional from Paddington to Paignton with a class 56, we had to go single line working over some facing points /emergency cross overs between Didcot and Swindon, it was not only loud, but a rough ride. Also there was a set of rails put down between Sherborne and Yeovil on the loop down line from Templecombe not the up Reversable where they had tried to grind out the steel bar that was welded, but that you could still hear and feel it. I had heard it came from the Seven Tunnel area? that was ground out in the end.
That isn't the purpose. The weld is so train wheels always make contact on a rail, usually found in lightly used sidings and the approach to buffer stops. The purpose was to detect lightweight trains (imagine a 142) stood on a rusty rail the might 'disappear' on the signalling diagram.
Great Video Dave
Great video as usual.
A great video thoroughly enjoyed this
great vlog on the channel layout looks good thanks for the update on the layout thanks lee
Agree with @mossdaleNgaugeRailway. Signalling systems which rely on track circuits to detect the presence of trains aren't good at detecting lightweight trains (think 142s) on rails that barely see any use, or can get contaminated in oil, fuel or other contaminant. The wavy steip is usually welded ontop of the rail, and as such will usually stay shiny when the wheel passes over them, thus ensuring an electrical short is made, and the track circuit detects the train.
It is not a warning to drivers approaching a buffer stop.
Former Signaller and current train driver.
Looking forward to seeing the progress on Watford. guys. When building Iveco house and the station have you taken into account the fact that the station entrance is at a lower level to the platforms ?.
The stainless steel wavy strips on the rail surface is to ensure the track circuit correctly detects the presence of a train
No for track circuits as the whole rail is a detected. the ends or sections are wired directly, the wavy steel bar is for feel and sound when closing in on buffer stops or emergency cross overs, it's too rough a ride for general use on the main lines.
@@Thunderer0872 Sorry, 40+ years as a signal technician/engineer, I think I know the correct answer.
@@davidchurchill , you are correct, the serrations are there to ensure oil, dirt and grease doesn't cause a build-up and lead to trains 'disappearing' off track circuits, thus showing that the section is occupied. everyone seems to wrongly think that they are attention getting rumble strips....
The wavy strips are for a tactile notice of a stop or slow on cross overs, I went over one set on an additional from Paddington to Paignton with a class 56, we had to go single line working over some facing points /emergency cross overs between Didcot and Swindon, it was not only loud, but a rough ride.
Also there was a set of rails put down between Sherborne and Yeovil on the loop down line from Templecombe not the up Reversable where they had tried to grind out the steel bar that was welded, but that you could still hear and feel it. I had heard it came from the Seven Tunnel area? that was ground out in the end.
That isn't the purpose. The weld is so train wheels always make contact on a rail, usually found in lightly used sidings and the approach to buffer stops. The purpose was to detect lightweight trains (imagine a 142) stood on a rusty rail the might 'disappear' on the signalling diagram.