Templot Club Archive - Search Results
To search again, click the Back button in your browser.
Search results for: fb_movablek_dslip.jpg
13 results found.
... , because Jim has a copyright note about that. regards, Martin. posted: 19 Nov 2008 03:33 from: John Lewis I did not recognize it as a link! :-( John posted: 25 Nov 2008 22:06 from: Martin Wynne Martin Wynne wrote: A superb close-up from Jim Smith-Wright of movable K-crossings in a double-slip at Birmingham New Street. (on RMweb) A similar excellent picture from Mick Nicholson. Lots of detail for the FB modeller: fb_movablek_dslip.jpg© Mick Nicholson Thanks Mick. Martin. posted: 17 Sep 2009 21:38 from: Jim S-W Hi All Thought I'd post the pic Martin mentioned directly on here switch.jpg Cheers Jim Last edited on 19 Sep 2009 08:30 by Jim S-W Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Movable K-crossings at New Street about Templot Club Templot Companion- User Guide- A-Z ...
... : Martin Wynne Mick Nicholson has sent some close-up pics of the BR Clamp-Lock design of combined hydraulic switch drive and facing-point lock. This is normally associated with FB track, but can also be fitted to bullhead. clamp_lock2.jpg This view also shows the chamfered style of switch planing: clamp_lock1.jpg clamp_lock3.jpg A detailed description of this design is in sections B3 and B4 of this document: Clamp-Lock data From which: clamp_lock_dwg.png Clamp-Locks on the movable K-crossing switches of a double-slip: fb_movablek_dslip.jpg Finally another pic from Mick, of an insulated stretcher bar joint (for track circuiting): insulated_stretcher.jpg Many thanks Mick. Martin. posted: 21 Apr 2010 18:30 from: Jim S-W Hi All A quick pic for you of Colin Craig's 4mm scale clamp lock details clamp%20locks%202.jpg HTH Jim Parts of Templot Club may not function unless you enable JavaScript (also called Active Scripting) in your browser. Templot Club> Forums> Prototype pics> Clamp-Lock hydraulic switch drives about Templot Club ...
3. Single Slip
... lower photo) the switch tips (points) are carried on two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. For more information about all this, click: topic about switch-diamonds. Ask again if you need more. regards, Martin. posted: 12 Feb 2009 12:27 from: Martin Wynne p.s. Scott, Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: fb_movablek_dslip.jpg© thanks to Mick Nicholson regards, Martin. posted: 12 Feb 2009 13:01 from: Stephen Freeman Hi, I've built 2 of these curved double slip in O-FS for a customer and one in P4, if anybody is interested I can look out the boxfiles for same. posted: 12 Feb 2009 13:17 from: Scott Willis Hi Martin Thanks for the information, it just goes to prove that you never stop learning. I take it, except for adjusting timbers/check rails, that ...
... still a beginner on Templot and haven't explored all the menu options yet.. Regards Tony posted: 3 Sep 2010 23:36 from: TonyHagon Just a quick note.. did the prototype permit movable elbows with slips? Regards Tony posted: 4 Sep 2010 00:25 from: Martin Wynne TonyHagon wrote: Just a quick note.. did the prototype permit movable elbows with slips? Hi Tony, Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: fb_movablek_dslip.jpg© thanks to Mick Nicholson If you search on here for "switch diamond" you will find several discussions, see for example: topic 288 regards, Martin. posted: 4 Sep 2010 12:51 from: TonyHagon Martin Wynne wrote: Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: A truly excellent photo, Martin, many thanks.. complete with point heaters! Now, all I have to do is build a pair of them in P4 ...
... ) without encroaching on the slip switches. Or if switched diamonds did exist in slips, were the diamond switches relatively short with hinges? Jim. posted: 5 Apr 2012 21:22 from: mike47j http://acm.jhu.edu/~sthurmovik/Railpics/Towers/SHORE-double-slip.jpg Mike JOhnson posted: 5 Apr 2012 21:45 from: Martin Wynne Thanks for the link, Mike. Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: fb_movablek_dslip.jpg© thanks to Mick Nicholson More: topic 1229 regards, Martin. posted: 5 Apr 2012 23:56 from: Tony W Hi Martin. Kings Cross 25/12/72 with switched double slip to the right. Tony.2151_051855_070000000.jpg posted: 6 Apr 2012 09:05 from: Jim Guthrie Many thanks for the responses. Mike Johnson's picture answers my question about the lengths of the crossing switch blades- they are obbviously quite short and hinged in some way. I also note on mick Nicholson's picture of the flat- ...
... have not produced the check rails, whereas the top one is 1:8 and has. 32_151949_370000000.png Attachment: attach_1446_1960_DiamondCrossings .box 301 Last edited on 16 May 2012 00:53 by Andrew Fendick posted: 16 May 2012 01:00 from: Martin Wynne Hi Andrew, Fixed K-crossings are not prototypically correct at angles flatter than 1:8, and would be extremely unreliable if modelled as such. Switch-diamonds (movable K-crossings) are used instead, and Templot draws them as such, like this: fb_movablek_dslip.jpg© thanks to Mick Nicholson An excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings. Templot is drawing a switch-diamond instead (i.e. movable K-crossings) because that is what is required at this angle. Here are a couple of images to help explain: switch_diamond_10bh.jpg© PWI switch_diamond.jpg© PWI regards, Martin. posted: 16 May 2012 01:06 from: Andrew Fendick Thanks very much for that information Martin. Sorry to have troubled you. posted: ...
... : switch_diamond_10bh.jpg switch_diamond.jpg Notice that in a flat-bottom switch-diamond (lower photo) the switch tips (points) are carried on two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings. As one switch blade opens, the other closes. You can see that this doesn't affect the provision of the slip roads in the other rails: fb_movablek_dslip.jpg© thanks to Mick Nicholson Using movable K-crossings will give you very much more reliable running at 1:10 angle, and they are much easier to construct because you don't have to find room for the K-crossing check rails. The only downside is the need for two extra point motors (or only one if you make a suitable rocking crank device to drive both K-crossing switches from a single motor). For more information about all this, click: topic about switch-diamonds. Ask again ...
... two separate timbers. In a bullhead switch-diamond (upper drawing) both switch tips share a common wider centre timber. Here is a switch-diamond in early FB track at Bilton Junction, clamped out of use. Photo thanks to Mick Nicholson: 2_221106_110000000.jpg Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings. As one switch blade opens, the other closes. You can see that this doesn't affect the provision of the slip roads in the other rails: fb_movablek_dslip.jpg© thanks to Mick Nicholson Using movable K-crossings will give you very much more reliable running at flat angles, and they are much easier to construct because you don't have to find room for the K-crossing check rails. The only downside is the need for two extra point motors (or only one if you make a suitable rocking crank device to drive both K-crossing switches from a single motor). Switch-diamonds are mandatory if the crossing angle is flatter than 1:8* and Templot automatically ...
... Equally, at the other end of the scale, 1 is 8 is the maximum with fixed K-crossings Hi Arthur, Slip roads work well with movable K-crossings (switch-diamonds) because there are no K-crossing check rails to get in the way. So in practice there is no upper limit, you can add slip roads to a very long switch-diamond if you wish. Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings: fb_movablek_dslip.jpg© thanks to Mick Nicholson At the lower end of the scale, 1:7 is usually the bottom limit for inside slips on the prototype. 1:6 is possible, but the radius is tight and normally found only in sidings. Generally below about 1:7, outside slips are used instead. regards, Martin. posted: 15 Feb 2013 18:49 from: LSWRArt Thanks Martin for the usual prompt response. I will try to see if 1:7 will fit. Do you have any idea ...
... Len Cattley wrote: Hi Ian looks like I will have to change it to a 1:8 double slip. Hi Len, There is no need to change if 1:10 fits your site. You can have slip roads on a switch-diamond. Here is an excellent picture from Mick Nicholson showing a flat-bottom double-slip with movable K-crossings. As one switch blade opens, the other closes. You can see that this doesn't affect the provision of the slip roads in the other rails: fb_movablek_dslip.jpg© thanks to Mick Nicholson Using movable K-crossings will give you very much more reliable running, and they are much easier to construct because you don't have to find room for the K-crossing check rails. The only downside is the need for two extra point motors (or only one if you make a suitable rocking crank device to drive both K-crossing switches from a single motor). regards, Martin. posted: 19 Feb 2014 21:17 from: Len Cattley Hi Martin thanks for your reply ...
11. Single slip
... from: Martin Wynne Hi Andrew, Yes, certainly you should use movable K-crossings at 1:8 on 45" radius. For a slip it actually makes it easier to build because you don't have to find space for the K-crossing check rails. So easier to build and more reliable running, win-win. Just need to provide the additional point motor(s). Here's a nice pic from Mick Nicholson showing a prototype double-slip with movable K-crossings (flat-bottom): fb_movablek_dslip.jpg It is also a good picture for judging the size of ballast stones -- those timbers are 12" (4mm) wide. p.s. according to the database this is my 6,000th post to Templot Club, no wonder I'm feeling tired today. We started 10 years ago on 11th May 2007 (with 7 years of Templot Email Group before that). regards, Martin. posted: 13 Sep 2017 09:28 from: Andrew Duncan Thanks very much Martin and congratulations on your 6000th post and tireless( ...
... to the left of the DMU. How would be the best way to recreate it, given that the said single slip appears to have movable blades on the area that is normally a diamond, and that it is on a awkward curve? Can anyone point us in the right direction please? Hi Mike, It's a switch-diamond single-slip. Quite common in flat-bottom, not so much in bullhead. Here's a close-up of the K-crossings (this is a double-slip): fb_movablek_dslip.jpg thanks to Mick Nicholson They are used when the crossing angle is flatter than 1:8. As one blade closes the other opens. Are you asking how to build it, or how to do it in Templot? Just start with a turnout flatter than 1:8 on the required curve, say a C-10, and then tools> make slip: 2_120717_440000000.png Being on a curve makes no difference. More about slips in Templot at: http://templot.com/companion/slips.php More information about switch ...
... you build a 1:10 diamond with fixed K-crossings, you will very likely get mis-tracking and derailments. That's why the prototype doesn't allow them. For wider than scale flangeways such as 00 and EM, derailments are almost certain. Info from Templot Help notes: 2_120732_280000000.png Drawing of a bullhead 1:12 switch-diamond: 2_081530_450000000.png A modern switch-diamond double-slip. Quite common in flat-bottom, not so much in bullhead. Here's a close-up of the K-crossings: fb_movablek_dslip.jpg pic thanks to Mick Nicholson They are used when the crossing angle is flatter than 1:8. They make a model slip much easier to build, because there is no need to find space for the K-crossing check rails. The downside being you need 2 extra point-motors and stretcher bars. In a model diamond-crossing they also make the electrics much easier, because the V-crossing polarities can be controlled by the K-crossing switches. Just treat as in effect 2 turnouts toe-to ...
Search took 0.095 seconds
Back to Templot Club