... Regards Tony W. 2151_051819_170000000.jpg 2151_051825_160000000.jpg Tony, I hope you don't mind me returning to this post for a little further clarification of what I am looking at... I confess the more I look at it the more muddled I get. No longer necessary... someone has kindly explained things. Attached is an image of a period MR 3 way turnout for comparison... the point rodding attachment is quite clear I think.... and I am assuming it would be the same if attached to a crank rather than a lever. Tim Attachment: attach_2534_2839_post-26366-0 -09851300-1508406275.jpg 695 Last edited on 19 Oct 2017 12:26 by Tim Lee posted: 19 Oct 2017 12:38 from: Tony W Hi Tim. That picture is quite unusual. Normally on a three throw turnout the shorter blades are between the long switch blade and the stock rail. This means a flange has only one one switch blade tip to negotiate rather than two thus reducing the risk of derailment. Perhaps they learned the hard ...

... Ive been describing above...if I can recall how to upload? 2787_191503_490000000.jpg This view shows the underside wiring including the servos for turnouts controlled by the Megapoints electronics which seem rather like magic to me....! 2787_191512_420000000.jpg Yeovil point rodding under construction last month. Unlike Howards point rodding mine doesn't have to work luckily, as even this non working set up took an age to do. Incidentally I used Modelu point rodding stools which really are quite exquisite models (if only I could see all the detail!) Howards cranks, compensators etc and Eileen's metre long 0.4mm straight brass wire( this may have been a mistake as I've since read that brass gets damaged easily and perhaps nickel silver would have been stronger). I'm getting rather strange effects on the computer screen now so I think I'll quit whilst I'm ahead and try and upload this as it is. Kind regards Andrew posted: 20 Feb 2017 06:45 from: Martin Wynne Hello Andrew, Many thanks for the update. Good to see such progress. It's nice to see the ...

... . Remember to unlink the group afterwards. More info about all this here: http://templot.com/martweb/gs_geometry.htm#shift_group_notch Sorry that page is 10 years old. Some details may be out of date. Ask again if it's not clear. regards, Martin. posted: 21 Feb 2016 14:26 from: Charles Orr Many thanks Martin. posted: 27 Feb 2016 10:09 from: Charles Orr Hi, Having now built a test double slip, I now need some advice on gapping and rocking cranks. Firstly can anyone point me to a diagram which shows how to correctly gap a double slip built on copper clad timbers? I am using DCC. Secondly, Martin mentioned the use of a rocking crank to drive the switched K crossings. Can anybody point me to a diagram that describes such a rocking crank? I will be using a servo to drive it. Many thanks Charles posted: 27 Feb 2016 11:00 from: John Shelley Charles Orr wrote: Hi, Having now built a test double slip, ...

... Brian Lewis rodney_hills wrote: It would perhaps be helpful if this page of yours gave more info in the way of dimensions, or referred to a seperate set of specifications. Just a thought. and a good thought Rodney. I will do this for all B2B gauges in the next update. Thanks. Regards Brian Lewis Carrs- C+ L Finescale. http://www.finescale.org.uk posted: 26 Mar 2008 22:23 from: Richard Webster Brian, On a similar theme to Rodney's; I saw some of your point cranks etc on the stand at the recent York Show and they looked marvellous. However, I was rather bamboozled by the number of different parts and how they interelate. I wonder if it would be possible for you to incorporate drawings or photographs of all the parts on the C&L website. I think that this would help one to choose the parts required and get it right the first time, rather than having to use the exchange service which you offer Regards, Richard posted: 27 Mar 2008 03:23 from ...

... you need two weights when you can achieve exactly the same result with one? Hi Andy, I'm not sure you can. If you use tension in the operating cord to pull the points over against a single falling weight return, the points aren't trailable when so held over. And it needs some very careful adjustment to the operating cord to hold them against the stock rail with the right amount of force. The beauty of this design is that you can use any old bit of string to lift the weight from the operating crank. The points are held either way by the weights only, and are trailable both ways. cheers, Martin. posted: 25 Jul 2020 18:12 from: Andrew Barrowman Martin Wynne wrote: Andrew Barrowman wrote: I completely agree. But if all you want to do is exert a force, why do you need two weights when you can achieve exactly the same result with one? Hi Andy, I'm not sure you can. If you use tension in the operating cord to pull the points over against a ...

... frame connections -- rodding compensators posted: 28 Jan 2009 09:13 from: Martin Wynne Something not often photographed -- rodding compensators. These are placed in runs of point rodding to convert a pull action into a push action. It's important that the total length of a rod connection in "pull" should be equal to the length in "push". This cancels out any movement at the far end caused by thermal expansion along the way. Often pulls can be converted to pushes where the rodding passes through angle cranks to cross under the rails, and this determines the exact location of such a side swap. Where equality can't be achieved that way, compensators such as these are inserted in the rodding run: 2-throwrods.jpg© Neil Fraser Image linked from an interesting page of switch details and detection gear at a ground frame -- click the small images: Side-tracked. Martin. posted: 28 Jan 2009 09:33 from: Martin Wynne I wrote: It's important that the total length of a rod connection in " ...

... to use to use servo motors to drive the slip. Where would you suggest attaching the tie bars to operate the K crossings? One last question. How would I turn this into a double slip? Hi Charles, Bullhead switch-diamonds usually have a single wide timber at the centre, carrying both sets of points (blade tips). The drive stretchers would usually be located on each side of the central timber. The switches always work together in opposition, so you can save some motor cost by arranging a rocking crank from a single motor. To make a double slip, simply repeat the process of adding a slip road, swapping the TCP and MCP positions for the additional slip switches. Also change the half-diamond settings for shortened check rails and extended timbers to those for a double slip. If you do any customizing, make sure the slip switches are far enough from the V-crossing to allow room for both points (blade tips) to stand open between the wing rail fronts at the same time. They normally move ...

... total remaining visible. No doubt I can change that, but I'm still feeling my way through the forum settings. But once the forum is under way the exact number of posts give or take a few won't really mean much. Thanks to everyone who wrote to explain their user name. Just to clarify -- I'm not insisting that you use your full real name if you would prefer not to. But I would much prefer not to see the forum littered with silly names like "gronk-buster" or "return crank", or cryptic names like "cypak", such as seem to be rife on other forums. Abbreviated names and initials are fine -- "Mart W". However I would like to know who you are, otherwise you risk being unable to post messages or access other features. I can't risk waiting until you make a post to find out that you are genuine and not a spammer. In most cases I can see who you are from your email address (which is hidden from other members unless you ...

... -beam is flush with the inside of the pit. Bridge chairs have a base that is nearly square as opposed to the standard S1 chair, which is much wider than it is long. Flatbottom rail can be spiked or bolted directly to the way-beam surface as it has continuous support. Sometimes a low hight rail section is used. Turntables are not something of I have much experience, but similar considerations would I suspect apply. As long as the running surfaces align, mixing rail sections is quite permissible. Special cranked fishplates are made for just this eventuality although rails are often butt welded together these days. I would not recommend butt soldering two rails together as the resulting joint will not be very strong, guess how I know? Regards Tony. posted: 19 Dec 2016 00:16 from: gibbard d Tony W wrote: Bridge chairs have a base that is nearly square as opposed to the standard S1 chair, which is much wider than it is long. HI tony thanks for your advise. would a L1 chair be suitable ...

... can now create slips, including curved ones, with a couple of clicks. But even after all that it is still going to be tricky with fixed K-crossings for a curved slip. The much better solution and strongly recommended is to build it as a switch diamond with movable K-crossings instead. That is actually much easier to build because there are no K-crossing check rails to find space for. But it does mean you will need two extra point motors (or only one, with a suitable rocking crank)*. To create the template for that, click real> K-crossing options> movable K-crossings menu item. *If they are Tortoise pattern point motors and fitted the opposite way round from one another to make room, you can drive them both in parallel from a single panel switch. regards, Martin. posted: 27 Oct 2017 13:50 from: RPEDDER Thanks Martin for the feedback, I have now uploaded the .box file. I think I understand what you are saying regarding the K ...