... had some comments about this as drawn that may mean some changes would be desirable. Yes. As often with Iain's plans, getting everything to fit as drawn can be a problem. Especially in P4! The problem is the single slip. Iain has drawn a 1:4 inside slip. That's next to impossible in P4 (or the prototype), the radius is just too tight. The slip road is needed because without it there is no run-round capability for the loop. I tried changing it to an outside slip (a very attractive formation, and also a favourite of Iain's), but there just isn't room. It would mean widening the spacing between the loop and the main by so much that the DMU platform length all but disappears. So I have tried a couple of other ideas. As always there are trade-offs, pros and cons. The first thing to decide is what needs to remain fixed, what can be moved. I think the DMU platform in the bottom left is probably in the fixed category ...

... ones to fit into HO British locomotives. George Mellor, who was heavily involved in the decisions, wrote an article which made things clear. It was believed, quite understandably, that to manufacture succesful toy trains, which needed to run on clip together small-radius track often laid on carpets and similar, using anything like scale wheels were a total no go. Hence thicker wheels with deeper flanges were used. The problem which then arises is the British loading gauge, which on the prototype forces tight clearances between wheels and outside valve gear, and wheels and splashers, to give just two examples. The proposed wheels simply wouldn't work if the scale was right for the track. So they increased the scale. Which is why commercial toy models of British locomotives in ALL scales use underscale track. To return to the discussion, OO isn't primarily a scale. It is a scale/gauge combination, in the same way that EM and P4 are scale/gauge combinations. Cheers Nigel posted: 26 Sep 2015 12:59 from: madscientist Nigel ...

... topic: 3186 Rail Edges in Generator posted: 16 Jan 2018 20:36 from: Andrew Barrowman An extremely selfish request: Would it be possible to put the inside and outside edges of rails on separate layers in a DXF export from Templot? When I'm populating a template with chairs in TurboCAD I use the inside rail edge as the reference but at times it's useful to be able to see the outside edges of rails as well. TurboCAD allows me to make layers visible or invisible so I can turn them on or off as required. Regards, Andy posted: 16 Jan 2018 20:45 from: Martin Wynne Andrew Barrowman wrote: An extremely selfish request: Would it be possible to put the inside and outside edges of rails on separate layers in a DXF export from Templot? Hi Andy, You can do this if you export them to two different DXF files. The required settings are in the generator> generator settings> rails> menu options. Do a generator> rebuild all background after changing the settings. Then export DXF again ...

... think you answered your own question as below. Best regards Trevor. Or just leave the existing open source where it is for anyone who wants it and otherwise forget it? posted: 4 Sep 2018 23:12 from: Paul Boyd Hi Martin For me, the main interest was in having the possibility of running Templot without having the internet check. In the event that for whatever reason that gets switched off, all our work is made useless at a stroke. Whatever the software, I feel nervous about relying on something outside of my control to be able to continue using it. Even with my reluctant switch to the subscription model of Adobe Lightroom and Photoshop I can still fall back on an older standalone copy if necessary, and I have an XP box squirelled away as a last resort for when Microsoft do something stupid to stop my ALPS printer working, or parallel printer ports on PCs disappear completely. The idea of being able to tweak things to make my own version does appeal, although it's been a long time since I've done any programming ...

... too. As I mentioned, there is only one section, about 6 to 8 inches in length which causes us problems. I'm pretty sure from memory the track centres there were 85mm. If that is correct, and taking the 84.2mm minimum from the GOG data sheets, then there is only 0.8mm leeway with our 85mm. As Mike has pointed out, loose tolerances in wheelsets/bogies will in fact easily negate the minimum spacing. The trouble was ends of coaches on the inside curve catching the overhang of coaches on the outside curve. Only 6 months before it all gets ripped up though ;-) Ian posted: 20 Feb 2012 22:29 from: Tony W Hi Martin. Here are copies of the spreadsheet I use, worked out from first principles, which uses the same formula as Mike. This produces results very much in agreement with the figures published by the late Derek Genzel in the Scalefour Society digest. In looking at the figures for the EM track at 24" radius giving a throw of 6.67mm, this is similar to ...

... topic: 1018 Size of print area posted: 18 Jan 2010 14:44 from: Gordon S I'm probably doing something wrong, but I have to move the page/print datum point when I come to print this group. It appears as though the grouped track in the attached box file is sitting outside the print area. Is that possible or is it me? .... Just noticed that using Shift/Control/F10 shows a background print size. I thought it was unlimited, the same as the actual plan. Does this mean large plans have to be printed in sections? Attachment: attach_728_1018_Print_Datum.box 256 Last edited on 18 Jan 2010 14:50 by Gordon S posted: 18 Jan 2010 15:33 from: Martin Wynne Gordon S wrote: I'm probably doing something wrong, but I have to move the page/print datum point when I come to print this group. It appears as though the grouped track in the attached box file is sitting outside the print area. Is that possible or is it me? ...

... can see the sawn gaps in the timbering in the pointwork and the rather generous gapping in the sleepers in the two tracks in the rear which is as supplied ready insulated. These were sleepers I got about thirty years ago for another N scale layout. The other PCB materials are 2mm Association products. Jim. Certainly a picture worth a thousand words. I have taken a copy for future reference, let me know if this is not ok with you. One question. It looks as though the only soldering is on the outside of the straight rails, is this so? I would have expected this to pull them over somewhat. It will be a great saving if I can do this on any straights I make. I doubt this would be so when making points, am I right? From your last paragraph it seems maybe I should join the 2mm Association but they sure don't make it easy. I can't remember the last time I sent something by ordinary mail. regards ken posted: 15 Jan 2010 08:47 from: Jim Guthrie ...

... . I may well have to try that. Again. You don't know how many times I've been round the loop. My source is the OS1250 map from 1960. Better than nothing but the line thickness creates an uncertainty. I have a 480-scale LNWR drawing from the time when the trackage was widened from 2 to 4 running lines. My drawings show a carriage-shed with only 3 roads and a different path for the left to right path through this "scissors". At that stage their drawing shows an outside slip associated with the 1 in 4 diamond further up. This LNWR drawing I have must represent a stage in the development. When the shed requirement became 4-road the outside slip became unworkable and this "scissors" became the least bad solution. Regards, Geoff posted: 26 Feb 2011 00:24 from: roythebus Quite impressive; I'd be inclined to gently curve the fairly straight lines along the top of the plan to get rid of the train set look of going from nearly straight to sharp corner as I've ...

... own layout. Perhaps the problem may be the stain you have used to colour the ply- was it by any chance a varnish-based stain? If so, it may leave a coating on the surface of the ply and this would give rise to the problems you have experienced. For checkrail chairs in 7mm scale I use 4 bolt chairs with the inside of the chair trimmed back using a simple jig to leave 30 thou of the chair on the inside of the rail. The same trimmed chairs are used inside and outside of the checkrail. The chairs at the flared end of the checkrail are trimmed at a slight angle to give a good fit. Regards. Bill Campbell. posted: 14 Jul 2013 22:55 from: SimonH Evening All I suppose the main area for concern was the check rails. I'm using C&L base plates (OO) which are about as close as I can get without maunufacturing from scratch. The only way to get them close to the running rail was to cut the base plates down and then ...

... than normal turnouts, that's why i was fascinated by your idea.But both sides will be 3 ways, sorry. I even thought about that "circle" to park my stuff. But to store complete train sets the traverser would be not fitting into my plan. The big boy, aa20, eerie (9999)and other big ones needs to much rolling stock to make this function properly. the T3's and my great grandfathers loco (6300 series)could use this?, i am afraid it would be to small. Outside this "storage shed" you can see the "idea" that i would like to build. Those are the 4 "main lines" for the big ones, they run only on the outside of my garden. The box file is JUST A impression of what i am building, some pieces of strait track can be one(1) meter longer or shorter, curves are what i am going to build in radii! For all: i hope (now)you understand my fuss about frog making, but ...