Templot Club Archive - Search Results
To search again, click the Back button in your browser.
Search results for: 2_202055_480000000.png
7 results found.
... coned and they seem to work just as well as coned wheels. Cheers! Andy posted: 3 Oct 2019 21:26 from: Martin Wynne Andrew Barrowman wrote: Do full-scale railways compensate for that effect at all? Perhaps the wing rails are adjusted upwards slightly. I'm pretty sure Martin will know. Hi Andy, Yes they do. The nose of the vee is taken down below the level of the wing rails. The slight rolling depression is taken up by the wheel suspension, there is no bump: 2_202055_480000000.png thanks to Mick Nicholson for the photo It is well worth taking a few thou off the top of the nose of model vees for the same reason (assuming coned wheels). p.s. wheel coning serves no practical purpose on a model. It is purely for appearance. cheers, Martin. posted: 3 Oct 2019 21:37 from: Andrew Duncan Martin Wynne wrote: Andrew Barrowman wrote: Do full-scale railways compensate for that effect at all? Perhaps the wing rails are adjusted upwards slightly. I'm pretty ...
... insert the rail. Once glued in position and ballasted, I don't see the need for great strength. You are surely not going to nail them down, as some folks do with set-track? re: your experiments on RMweb with plastic sections of the rail -- a couple of points: 1. wheels should run on the wing rail until they reach the vee, so if the wing rail is plastic they would lose pick-up, as in a "dead frog". See the wear marks: 2_202055_480000000.png thanks to Mick Nicholson for this photo 2. if model wheels rub against the check rail, they can be lifted fractionally off the running rail, again losing pick-up if the check rail is not live. Experienced trackbuilders make the check rails live for this reason. With functional plastic chairs that means making an additional connection to the check rail. regards, Martin. posted: 30 Jul 2017 18:03 from: Andrew Barrowman Martin Wynne wrote: Andrew Barrowman wrote: consistent with your statement that they are always ...
3. New user
... , and to re-instate the rail-head corner radius on the filed areas. A few strokes with a fine file and a final polish with abrasive paper will do that. It's also a good idea to take a few thou off the top of the vee nose so that it dips down slightly below the level of the wing rails. This allows for the coning angle on the wheels as they run off the wing rail onto the nose, producing smoother running. You can see these features in the prototype here: 2_202055_480000000.png© Mick Nicholson with thanks Showing the blunt nose of the crossing vee supported on a timber, with the actual gauge intersection located between the timbers. The top of the vee nose is taken down slightly below the level of the wing rails, and rounded off. The end result is an accurately aligned vee matching the template and comprised of solid rail at the nose. regards, Martin. posted: 21 Jan 2011 02:18 from: BruceNordstrand Thanks Martin, time to invest in a disc sander me thinks, so ...
... prototype designs have a radiused knuckle bend, with the result that the knuckle gap is wider than the crossing flangeway. If you replicate this it will be less noticeable if the bends do not exactly align. A radiused bend also helps a lot if you are using functional chairs with the rail canted at 1:20 angle. Some modellers go to the absurd length of filing a notch in the rail to make a dead sharp knuckle bend, which is totally unnecessary and looks awful. This is what it should look like: 2_202055_480000000.png© Mick Nicholson with thanks regards, Martin. posted: 22 Feb 2011 18:10 from: Rob Manchester Hi Martin, Martin: Do you mean the knuckle bends in the wing rails are not opposite each other? Rob: Yes that is the trouble. Martin: Before adding the wing rails, check that the vee nose is correctly gauged from the stock rails, and equidistant between them. Rob: There aren't any stock rails at this stage in the construction process. I am trying to make the common crossing ...
... below the level of the wing rails. This allows for the coning angle on the wheel tread. Finally round off the nose of the vee and remove any sharp edges to match the corner radius on the plain rail part. Here's a new prototype blunt nose, showing it shortened back from the FP (yellow lines), supported on the timber, lowered below the wing rails, and rounded off. You can see from the wear marks that the wheels are still supported on the wing rails when they reach the nose. 2_202055_480000000.png thanks to Mick Nicholson for this photo regards, Martin. posted: 24 Jul 2017 23:07 from: Andrew Duncan MartinThanks very much for the clear explanation, I'll give it a go and see how I get on Kind regards Andrew Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Trackbuilding topics> Crossing nose. To blunt or not? about Templot Club Templot Companion- User Guide- A-Z Index Templot Explained for beginners ...
... bracket designs were introduced after the grouping, but the earlier designs would have lasted well into the 1950s in places, and there may still be a few around. Here's a couple of slab& bracket pictures: 1. GWR design, plain bracket castings, the slab has square corners and an angled section for the holding-down bolt through a pojection on the vee point rail: 2_121258_410000000.jpg 2. BR design, ribbed brackets, rectangular slab with radiused corners, no holding-down bolt, extra nose spacer blocks instead: 2_202055_480000000.png In both pics you can see the spacer blocks between the wing rails, but they don't fill the entire space. A fully filled space looks worse in models because of the wider flangeway gaps. Of course, the white pre-production pics make it look even worse. cheers, Martin. posted: 30 Nov 2018 22:57 from: Rob Manchester Martin Wynne wrote: Some pre-production pictures: http://www.rmweb.co.uk/community/index.php?/topic/139084-emgs-commissions-peco- ...
... , which is what gets supported by the crossing nose and knuckle. Hi Nigel, The vertical movement caused by the coning angle on the wheels is taken up by the vehicle suspension, and the wheel remains fully supported on the rails. The nose of the vee is taken down a fraction below the level of the wing rails so that the coned wheel can roll smoothly off the wing rail onto the nose. Here I have drawn some yellow lines on a new V-crossing so that the low nose can be seen: 2_202055_480000000.png It can be seen from the rail wear marks that the wheels make contact with both the wing rail and the vee nose simultaneously, and are always supported by one or the other. It's worth doing the same thing with model vees. Just a few thou off the top of the vee nose can make a big difference. What is normally meant by "wheel drop" on model crossings is different -- a situation where the wheel is not supported on the rails and is expected to leap across fresh air by magic ...
Search took 0.101 seconds
Back to Templot Club