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Post by Deleted on Mar 12, 2005 21:52:50 GMT
What type of intra-unit couplers are most popular with the various builders of LU rolling stock?
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solidbond
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Post by solidbond on Mar 12, 2005 22:40:40 GMT
Generally they are the wedgelock auto-coupler. These allow air and low voltage current to pass between both units. I have a close-up photo of a C stock coupler. I will upload it and provide a link when I have done so  |
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Post by Deleted on Mar 12, 2005 22:49:35 GMT
Those are inter-unit couplers. I'm talking about intra-unit couplers, the ones in between the individual cars of each unit.
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Post by Deleted on Mar 12, 2005 23:23:07 GMT
Here is one from a 73ts: chrisrailwaypics.fpic.co.uk/p11838402.htmlThe couplers used between the other cars, are like a long bar that connects to eac carriage under he train, and that can only be removed by going into a pit and undoing lots of nuts and bolts! |
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solidbond
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Post by solidbond on Mar 12, 2005 23:32:47 GMT
Those are inter-unit couplers. I'm talking about intra-unit couplers, the ones in between the individual cars of each unit. That'll teach me to read and post when I HAVEN'T been drinking (the joy of being on leave ;D ;D ;D) As MA says, the intra car connection is a bar, know as a draw-bar, or semi-permanent coupler. However, as usual, being as resourceful as I am ( ;D ;D), I have a picture of one of those as well, from a D stock, which I will upload soon, and provide a link as well. It should be noted that, depending on the stock, the air and electrical connections, both low and high voltage, will usually be transferred between cars using separate cables/hoses. These are known as the inter-car jumpers. |
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solidbond
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Post by solidbond on Mar 12, 2005 23:50:17 GMT
OK - here is the pic of the D stock semi=permanent coupler. The coupler itself is the round black bar in the top left of the picture. Note that on the D stock, there are 2 main line air pipes going between the units. One goes through the middle of the draw-bar, while the other goes on the outside of the draw-bar and you can see these in this picture.  |
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Post by Igelkotten on Mar 13, 2005 8:39:50 GMT
Very interesting picture, Solidbond.
I never realised that the negative shoes were mounted on the axle assemblies! Is this something peculiar to D stock, or is it the same arrangement on other types of stock?
/Igelkotten
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Post by Deleted on Mar 13, 2005 8:45:26 GMT
I just noticed that too Igelkotten!
I wonder if any previous LU stock, like the 1938TS have it - if they do, it would make it very easy to take the negative shoes off and connect the negative pole to the wheels. Hey presto, 3rd rail LU stock!
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Post by Deleted on Mar 13, 2005 12:36:12 GMT
Here's a 38 stock Semi Permanant Coupler with electrical connections and separate air hoses:  |
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solidbond
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Post by solidbond on Mar 13, 2005 12:47:19 GMT
Very interesting picture, Solidbond. I never realised that the negative shoes were mounted on the axle assemblies! Is this something peculiar to D stock, or is it the same arrangement on other types of stock? /Igelkotten Not sure how common/unusual it is now, but here is a picture of a C stock bogie, and you can see that the negative shoe-gear, which is at the right hand side of the picture, is attached to the main bogie, rather than the axle.  |
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solidbond
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Post by solidbond on Mar 13, 2005 12:56:20 GMT
Here's a 38 stock Semi Permanant Coupler with electrical connections and separate air hoses: To give an interesting comparison to that picture, here is a picture of the C stock semi-permanent coupler. You'll notice that on the 38 the air and electrical connection go through the draw bar, but on the C stock they are just connected directly from one car to the other, without going through the draw bar.  |
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Post by Admin Team on Mar 13, 2005 21:06:22 GMT
Oh no - solidbond's found some train equipment stuff  No we're REALLY in for trouble!! (P.S. - ask him if the bolts are metric, Imperial or Whitworth - we'll be here for days!!) |
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Post by Deleted on Mar 13, 2005 21:13:20 GMT
Oh no - solidbond's found some train equipment stuff No we're REALLY in for trouble!! (P.S. - ask him if the bolts are metric, Imperial or Whitworth - we'll be here for days!!) QUOTED! solidbond, what are the measurements? ;D |
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solidbond
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Post by solidbond on Mar 13, 2005 21:13:23 GMT
Oh no - solidbond's found some train equipment stuff No we're REALLY in for trouble!! (P.S. - ask him if the bolts are metric, Imperial or Whitworth - we'll be here for days!!) Interesting that you should raise that point, but one of the major differences between C69 and C77 stock is that C69s were built to imperial and C77s were built to Metric ;D ;D ;D. In addition, one of the things that has caused C stock to be banned from certain locations, was the replacement of platform nosing stones with metric ones  The particular places where they gave trouble that I know of, were Dagenham Heathway and Becontree on the westbound, and also at Harrow on the Hill, as a C stock came out of the sidings. (I'm really getting into my stride now ;D ;D ;D ;D) |
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Post by Deleted on Mar 13, 2005 21:16:15 GMT
<pedant>
Platform 5 is the dangerous one at H-O-T-H, and it's NOT the metric coping stones, it's the metric 1m extension to the DMs that houses the cab which causes C stock to bash the platform.
</pedant> ;D
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solidbond
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Post by solidbond on Mar 13, 2005 21:26:39 GMT
<pedant> Platform 5 is the dangerous one at H-O-T-H, and it's NOT the metric coping stones, it's the metric 1m extension to the DMs that houses the cab which causes C stock to bash the platform. </pedant> ;D Sorry, but Dag Heathway and Becontree were most certainly down to metric nosing stones. They had been replaced overnight, and the following day the booked C stock move from Upminster depot to Barking sidings hit them |
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Post by Deleted on Mar 13, 2005 21:38:21 GMT
Ah, but does the same apply at H-O-T-H? I was always under the impression that C stock DMs are too long for the positioning of the points from the siding...
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Post by Deleted on Mar 13, 2005 21:49:19 GMT
Ah, but does the same apply at H-O-T-H? I was always under the impression that C stock DMs are too long for the positioning of the points from the siding... You have confused me here, why would a DM length effect points to a siding  |
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solidbond
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Post by solidbond on Mar 13, 2005 22:08:55 GMT
I don't see how it could make a difference, as the A60s are longer than a C stock, by about 130mm per DM! So if a C stock was to hit the platform, then so would an A stock.
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Post by Deleted on Mar 13, 2005 22:33:27 GMT
You have confused me here, why would a DM length effect points to a siding I don't see how it could make a difference, as the A60s are longer than a C stock, by about 130mm per DM! So if a C stock was to hit the platform, then so would an A stock. I didn't explain myself too well. Based on information gleaned from u.t.l., any C stock train exiting the central reversing siding at H-O-T-H into platform 5 will foul the platform edge. This is due to the length of C stock DMs, and the position of the bogies beneath the DMs.Apparently the exit points from the siding into platform 5 are positioned such that an A stock train does not hit the platform edge, due to the position of the leading bogie. However, because a C stock train has its leading bogie in a different place relative to the leading car, the bogie can't cross the points onto the platform road without fouling the platform edge. Hopefully I got this right |
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Post by Deleted on Mar 13, 2005 22:45:03 GMT
Yeah, a bit clearer, understood now.
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solidbond
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Post by solidbond on Mar 13, 2005 22:53:13 GMT
Well, it would seem the people who posted that information had their facts wrong According to the LU Rolling Stock information, the distance between the front of a C stock and the mid point of the leading bogie is 2007mm, the A stock is 2140mm. The width of the body of a C stock is 2920mm, and the width of the A stock is 2946mm. Therefore, if anything was going to hit the platform, it should be an A stock! I have no idea of the actual reasons for the incident at HOTH, but, as I said, the problems at Dag Heathway and Becontree were down to metric nosing stones |
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Post by Deleted on Mar 13, 2005 23:08:14 GMT
So who's going to volunteer to find out why C stock trains whack platform 5 but A stock trains don't?
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Post by Deleted on Mar 13, 2005 23:17:36 GMT
So who's going to volunteer to find out why C stock trains whack platform 5 but A stock trains don't? I have an old Metropolitan line supplement somewhere in the back of my garage, I'll see if there's anything in it about C Stock using Platform 5 at Harrow. I'll dig it out tomorrow |
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Post by Deleted on Mar 14, 2005 8:08:09 GMT
I have an old Metropolitan line supplement somewhere in the back of my garage, I'll see if there's anything in it about C Stock using Platform 5 at Harrow. I'll dig it out tomorrow Thanks! I was thinking about a wrong stick at Baker Street actually  |
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The particular places where they gave trouble that I know of, were Dagenham Heathway and Becontree on the westbound, and also at Harrow on the Hill, as a C stock came out of the sidings. (I'm really getting into my stride now ;D ;D ;D ;D)
