Phil G
Member
- Location
- New Zealand
Hi Martin,
Just a few questions that are not plug track related
Firstly is it possible or practical, to use a ratings plan in a similar way to using an OS map as a background to draw out the track plan?
if so is there a limit on the size of the file, you can use as the background? Next can you open a TIFF file in Templot? Because its a TIFF it's 296 MB in size.
The next thing that is baffling me, is if you have a pair of roads, in this case its the down slow and the down fast lines both branching off (to the right) on a 6 foot way spacing, the the inner track must be taking a tighter radius. Would it then not flow that the crossing angle of the inner track has to also have a tighter vee crossing angle? Especially as the point rodding for the two toes of each turnout only seems to be at about a timber spacing.
My last questions are, if the down slow was in fact a tandem turnout, which it is roads branching to both the left (sidings) and the right (slow road to the Reddish branch)
Could they have the same crossing angle? Or must the second (the right hand branch) be a tighter vee crossing angle?
what I am getting at is, it looks as though the turnout to the siding is a I in 10 regular crossing, but that makes no sense as its to minor road in all cases. So unless I have this wrong the down fast branch will have the tightest radius and the smallest crossing angle !!!
Attached is a screen shot of the rating plan, and a screen shot from OS maps of the same area, noting the ratings plan is upside down in refence to the Map. As a picture or two can speak a thousand or at least many words.
There seems to me little point in starting to make a tandem turnout until I can at least make sense of what I am trying to recreate in EM gauge. If you felt so inclined to have a look, the OS map the grid refence is SJ 88751 91056.
As you can see it all makes for a complicated bit of trackwork, with a scissor diamond and single slip before the 3 way, and a full blown scissor diamond right after the siding of the 3 way turnout, not to mention the ladder crossings to get everything over the up lines.
Why start with something easy when you can dive right in at the deep end so to speak. maybe a perfect test case for a zoom meeting to cover of this level of complexity?
Cheers
Phil
Just a few questions that are not plug track related
Firstly is it possible or practical, to use a ratings plan in a similar way to using an OS map as a background to draw out the track plan?
if so is there a limit on the size of the file, you can use as the background? Next can you open a TIFF file in Templot? Because its a TIFF it's 296 MB in size.
The next thing that is baffling me, is if you have a pair of roads, in this case its the down slow and the down fast lines both branching off (to the right) on a 6 foot way spacing, the the inner track must be taking a tighter radius. Would it then not flow that the crossing angle of the inner track has to also have a tighter vee crossing angle? Especially as the point rodding for the two toes of each turnout only seems to be at about a timber spacing.
My last questions are, if the down slow was in fact a tandem turnout, which it is roads branching to both the left (sidings) and the right (slow road to the Reddish branch)
Could they have the same crossing angle? Or must the second (the right hand branch) be a tighter vee crossing angle?
what I am getting at is, it looks as though the turnout to the siding is a I in 10 regular crossing, but that makes no sense as its to minor road in all cases. So unless I have this wrong the down fast branch will have the tightest radius and the smallest crossing angle !!!
Attached is a screen shot of the rating plan, and a screen shot from OS maps of the same area, noting the ratings plan is upside down in refence to the Map. As a picture or two can speak a thousand or at least many words.
There seems to me little point in starting to make a tandem turnout until I can at least make sense of what I am trying to recreate in EM gauge. If you felt so inclined to have a look, the OS map the grid refence is SJ 88751 91056.
As you can see it all makes for a complicated bit of trackwork, with a scissor diamond and single slip before the 3 way, and a full blown scissor diamond right after the siding of the 3 way turnout, not to mention the ladder crossings to get everything over the up lines.
Why start with something easy when you can dive right in at the deep end so to speak. maybe a perfect test case for a zoom meeting to cover of this level of complexity?
Cheers
Phil
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