22-09-2010, 05:36 PM
Hello PJW,
Thank you very much for your very elaborate comments on my attempt.
I have taken note of your comments and have incorporated them into my 2007 attempt which I just posted this evening. If I have repeated some of those points that you raised my sincere apologies.
The salient points I wish to raise are:
Reversal of the Freight train at Down Slow at Platform C. I note your comment about the freight train being routed into the Down Siding and after loading/unloading to draw forward to the Down Slow at Platform C. I did not think about that as a possibility. However what was obvious was that the Turnback Siding was more than 400 metres long and a Frieght train was routed there to await its path it would be out of the way of the UP or Down Main.
The consideration for shunt signal 305 were as follows:
a) Signal 121 in its position 25 metres from the platform would result in the 400m Freight Train standing over points 206A and possibly 205A. While I did contemplate, shifting signal 121 forward to point 208A, I thought that its new position which is about 130 metres further away and given the curvature of the track would render signal 121 not visible for a train stopping at platform C. I did consider putting a banner at the platform but decided against it for reasons I cannot now recall.
Actually both Junction D and Station C are supposed to be MAY-FA but what would be a flashing yellow for one may require a flashing double yellow for another. How do I show this on the layout without giving the impression that I did in this attempt ?
The LOS 302 is to stop the engine after crossing points 201 so that it can now return to couple with the rest of the Freight train and propel it into the Turnback Siding.
3 letter track circuit identities
Thank you very much for your very elaborate comments on my attempt.
I have taken note of your comments and have incorporated them into my 2007 attempt which I just posted this evening. If I have repeated some of those points that you raised my sincere apologies.
The salient points I wish to raise are:
Reversal of the Freight train at Down Slow at Platform C. I note your comment about the freight train being routed into the Down Siding and after loading/unloading to draw forward to the Down Slow at Platform C. I did not think about that as a possibility. However what was obvious was that the Turnback Siding was more than 400 metres long and a Frieght train was routed there to await its path it would be out of the way of the UP or Down Main.
The consideration for shunt signal 305 were as follows:
a) Signal 121 in its position 25 metres from the platform would result in the 400m Freight Train standing over points 206A and possibly 205A. While I did contemplate, shifting signal 121 forward to point 208A, I thought that its new position which is about 130 metres further away and given the curvature of the track would render signal 121 not visible for a train stopping at platform C. I did consider putting a banner at the platform but decided against it for reasons I cannot now recall.
Actually both Junction D and Station C are supposed to be MAY-FA but what would be a flashing yellow for one may require a flashing double yellow for another. How do I show this on the layout without giving the impression that I did in this attempt ?
The LOS 302 is to stop the engine after crossing points 201 so that it can now return to couple with the rest of the Freight train and propel it into the Turnback Siding.
3 letter track circuit identities