Highland37
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View attachment 27532
This is a picture from Invershin Station today. Most of the fasteners between the rail and the bracket on the sleeper are like this. Lack of maintenance?
I also believe they are slowly replacing a lot of the track with CWR as it comes up for renewal.Intentional.
View attachment 27532
This is a picture from Invershin Station today. Most of the fasteners between the rail and the bracket on the sleeper are like this. Lack of maintenance?
There is supposed to be a 1/4" of the ferrule showing between the screw and the baseplate/chair if that is what you are thinking of. This is so the ferrule can act as a cushion between the screw and the cast iron so there is no point loading on the cast iron that would make it crack.
No I am thinking of the springy type of thing between the rail and cast iron bracket attached to the sleeper.
This one was the worst and they were all in various alignments in terms of nearly being pushed out.
No I am thinking of the springy type of thing between the rail and cast iron bracket attached to the sleeper.
This one was the worst and they were all in various alignments in terms of nearly being pushed out.
It's not strictly correct, I think. Isn't the "Chairbolt" actually a kind of huge coach-SCREW? I've seen 'em screwing them in with a T-shaped long stem tool.
The drawing makes it look like a square-head nut on a protruding stud.
It's not strictly correct, I think. Isn't the "Chairbolt" actually a kind of huge coach-SCREW? I've seen 'em screwing them in with a T-shaped long stem tool.
The drawing makes it look like a square-head nut on a protruding stud.
With the Chair bolt there is a nut on the protruding stud.
The disadvantage is if you need to change the bolt you either have to remove the sleeper from in the track or dig a hole under the sleeper to extract the bolt from below.
Normal practice, however, is as you say for a large Screw to be used. Much easier to maintain.
Bolts can also be found in some breeds of Concrete Sleeper with BH Chairs or FB Baseplates.
This might sound like a daft question (I don't know much about the track), but what constitutes a track in a poor state of repair? And also is there a line in passenger service that is an example of this?
This might sound like a daft question (I don't know much about the track), but what constitutes a track in a poor state of repair? And also is there a line in passenger service that is an example of this?
they're meant to be out.........historic use was to knock them in/out as required to adjust the tension acting on the rail. They used to be tapered, dunno if they still are
Well that's one way of stopping dipped joints!