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Author Topic: Oxcott [Thames valley 1989/Network SouthEast]  (Read 4086 times)

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Online crewearpley40

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #105 on: May 23, 2019, 01:03:47 PM »
and remember 86401 in nse livery on the northampton cobblers train ....
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Offline jamespetts

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #106 on: May 23, 2019, 01:26:18 PM »
Thank you for your replies. I should note that I was already using the crossover tool to create the crossovers, so I am not sure quite why I am getting the gaps.

I am still not quite sure about the position apropos curved turnouts. Oxford had some curves to the north, but the turnouts avoided this and were consistently on the straight. Are curved turnouts harder to build than straight ones? If they are more than very slightly more difficult to build, this might explain them being deliberately avoided on the main lines after the 1960s when labour costs were much higher. It is difficult for me to check in detail at present as the main source of photographic information, Flickr, is down for major upgrading work. The video on this page seems to suggest mostly straight turnouts, but it is hard to be sure (and one is of course mostly looking for the track that is being taken up, not the track that is going down; 1:37 gives a good view, as does 2:10).

However, another complexity arises: to get them all to fit in on the straight, I have to use a 1:9 crossing angle, which is shorter than I believe would have been used on the main line at this time; curving them, I can use a 1:10 crossing angle (or a 1:12 for the first crossover on the relief lines). The question may well therefore become whether curving points or a short crossing angle is the least worse compromise to have to make.

Offline njee20

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #107 on: May 23, 2019, 02:00:59 PM »
Prototypical pointwork on running lines can have 1:24+ crossing angles, theyíre massive in real life. Take a Google maps background and overlay templates on that, you get 2m long crossovers! A bit less prolific in the 1980s Iím sure, but still. Given all formations were made for each location I canít imagine there was any marked complexity in making curved versus straight turnouts, I wonder if there was a tendency toward straight ones for safety reasons.

I personally think curved pointwork looks better, it looks less toy-like to my mind as it flows better - like avoiding having track parallel to the baseboard edge. Having a curve which ends with a forced straight point looks less good IMO, but I fully understand what youíre saying about the prototype. That said of course the curves on the prototype are vastly more gentle, so you donít get the slightly jarring curve-straight transitions you can on a model.

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #108 on: May 23, 2019, 02:08:01 PM »
Having travelled over fine examples at bristol temple meads,york and newcastle upon tyne that gave me that idea too. Well worded. . . Just got to plan what radius you want to use
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Offline jamespetts

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #109 on: May 23, 2019, 03:53:37 PM »
The mention of Bristol Temple Meads is interesting, as this is very much a Western Region (indeed, GWML) station. Pictures:





show that this station does indeed have curved points on the main line, albeit the station is on a curve and this is not a high speed section of track.

How easy are curved turnouts to build compared with straight ones?

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #110 on: May 23, 2019, 04:12:07 PM »
am afraid im no expert, just a thought, you may have to ( disclaimer ) check the track section on this site


https://www.youtube.com/watch?v=CFR8sTK5Lko

https://www.youtube.com/results?search_query=Build+N+Scale+Curved+Turnout+Part+1+of+5


would this help james :

Build N Scale Curved Turnout Part 1 of 5

apologies trying to be helpful, ust the idea of the temple meads sprung to mind !!!!! and i was thinking of the curved point in the photo of the voyager

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Offline RailGooner

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #111 on: May 23, 2019, 04:20:35 PM »
A couple of crackin' pictures there James! The section of track on the right of the 2nd picture, illustrates that even the pros occasionally have trouble with creating smooth curves!
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Offline jamespetts

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #112 on: May 23, 2019, 04:25:43 PM »
A couple of crackin' pictures there James! The section of track on the right of the 2nd picture, illustrates that even the pros occasionally have trouble with creating smooth curves!

I should note that these are not my pictures, but are linked from Wikimedia Commons.

The video is interesting, albeit it seems to focus on using a specific US supplier's materials. I will have to look at that in more detail when I have some time.

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #113 on: May 23, 2019, 04:31:16 PM »
there were 5 altogether,timer consuming, but interesting - maybe able to work the gist of it -a lso when i have time !!!

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Offline njee20

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #114 on: May 23, 2019, 06:32:51 PM »
I guess building curved turnouts is slightly harder than straight ones, you canít use a straight edge to set it all up, but the converse is that it doesnít matter as much - as that photo shows the radius can vary quite a bit on the real thing!

Iíve only just built a straight one, having build a number of curved ones, I didnít find it easier or harder particularly, but Iíve found theyíre getting neater and needing less adjustment with each one, unsurprising I guess!

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #115 on: May 23, 2019, 09:54:49 PM »
hope the points go well, immuch more au fait with the trains though !!!
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Offline jamespetts

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #116 on: May 24, 2019, 08:16:24 AM »
Thank you for your thoughts.

Njee20 - I notice from your Flickr album:

Untitled by njee20, on Flickr

that you are making your own curved points in N gauge (and I think that you have mentioned it here, too). Do you use a jig for filing the crossing Vs and switches? If so, where did you get hold of it/them? If not, how are you able to do this accurately and consistently?

Offline njee20

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #117 on: May 24, 2019, 09:56:40 AM »
Indeed I am, currently in code 55 as I've shoehorned a couple of crossovers into an already built layout (I don't recommend that!), with a view to building my next layout in code 40 throughout, using Easitrac with PCB pointwork.

I have got one of the 1:10 2mm SA jigs, which I modified slightly to fit code 55 FB (they're designed for code 40 BH), which works alright, but the others I've just done by eye. In N the tolerances seem somewhat sloppy, so you don't need perfection. I've built 1:8, 1:9 and 1:10 crossovers so far. Like I say, they're getting better as I go along (I think I've built 8 now).

I really like the idea of the Fast Tracks jigs, but they're bloody expensive (even before factoring in shipping from the US), and from what I've experienced so far it doesn't seem entirely necessary.

Offline jamespetts

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #118 on: May 24, 2019, 11:32:13 AM »
Interesting, thank you. How have you found filing these shallow angles by eye - how do the trains run over the resulting pointwork?

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Re: Oxcott [Thames valley 1989/Network SouthEast]
« Reply #119 on: May 24, 2019, 11:47:08 AM »
looks good

hope the videos helped
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