geoffa Posted January 4, 2015 Share Posted January 4, 2015 I have just fitted Smiths screw link copulings ref LP5 to my Bachmann MK1 coaches and they derail on my 2nd radius curves. Does anyone have a solution other than going back to the NEM couplers? Geoffa Link to post Share on other sites More sharing options...
Londontram Posted January 4, 2015 Share Posted January 4, 2015 Did you mount them with springs or glue the hooks direct as when you go into the bend they could be too tight and causing the buffers to push the coaches off. the springs allow the drawbars to "stretch" out a little. One answer could be to shorten the shanks of the buffers on the sets coupled together so there's more clearance on bends. Steve Link to post Share on other sites More sharing options...
micklner Posted January 4, 2015 Share Posted January 4, 2015 You need curves of at least 3 feet radius . I gave up and went back to NEM for bogie vehicles. Link to post Share on other sites More sharing options...
darren01 Posted January 4, 2015 Share Posted January 4, 2015 Hi The problem with them there is no side play and will just pull the coach off, I fitted instanter couplings to my coaches. The problem i cam across with these was getting them to couple up with the gangways getting in the way!. In the end i gave up and moved over to using Sprat and Wrinkle one's fitted to the the two end coaches and keeping the NEM couplings on the rest of the coaches. The good thing about SW is that you can uncouple the stock and push it back to where you want it,without it coupling up again. Model Engineer Signal do a stater set, I would add it is worth getting the mount plates and the pre formed chain links. Hope this helps. Darren Link to post Share on other sites More sharing options...
Fat Controller Posted January 4, 2015 Share Posted January 4, 2015 Hi, The method i've used sucessfully for many years. The supplier of Sprat & Winkle couplings is Model Signal Engineering /Wizzard Models. Regards http://www.wizardmodels.co.uk/FrameSetShop.php Link to post Share on other sites More sharing options...
Flyingscotsmanfan Posted January 4, 2015 Share Posted January 4, 2015 I use Markits/Romfords Screw Link couplings as I find they are more robust in operation, Though I have yet to replace my LNER corridor stock tension lock couplings with new couplings I will be using Kadees as these wil be slightly more prototypical. I currenty have two Ian Kirk Surburbans fitted with screw links and I will need to replace the buffers due to buffer locking on even the gentle curves on both my Ffarquhar layout and the club's Lymeswold Layout, The simple soloution for me would be to remove the buffer shanks and drill out the head stocks as far as possible to the same diameter of the shank and push the shank in as far as possible to see if this cures it. Link to post Share on other sites More sharing options...
YK 50A Posted January 4, 2015 Share Posted January 4, 2015 Hi, As someone alluded to above, in the real world, Mk1 coaches would be coupled to each other with buckeyes not screw link, and certainly not instanters. They would have only used screw links when coupled to coaches fitted with British Standard Gangways, suburban stock, freight vehicles and locomotives of course - other than classes 33/1, 73 and 74 anyway. I ended up using Hornby/Roco couplings and my curves went down to 2nd radius, have a look here. The buffers are modelled in the retracted position. Hope that helps! Alun Link to post Share on other sites More sharing options...
YK 50A Posted January 4, 2015 Share Posted January 4, 2015 What is there to disagree with? Link to post Share on other sites More sharing options...
YK 50A Posted January 4, 2015 Share Posted January 4, 2015 It would be very unusual though! My post was technically correct and I did mention freight vehicles. Link to post Share on other sites More sharing options...
Il Grifone Posted January 5, 2015 Share Posted January 5, 2015 The problem is tying to make our models negotiate sharper than scale curves (IIRC Mk Is have a minimum radius of six chains*). The prototype requires sprung couplings, buffers and gangways to operate. For models, larger than scale distances between vehicles help, but look unrealistic. I would certainly stick to Kadees for Mk I stock (or any other stock with buckeyes), possibly bogie mounted for sharp curves. * Around five feet in 4mm scale. Link to post Share on other sites More sharing options...
YK 50A Posted January 7, 2015 Share Posted January 7, 2015 You're disagreeing with your own post: The other question is why fit screw couplings to Mk.1's.With the exception of the non corridor vehicles (which were screw coupled) all loco hauled Mk.1 vehicles were fitted with the semi automatic 'Buckeye' coupler so screw links are incorrect. Link to post Share on other sites More sharing options...
YK 50A Posted January 7, 2015 Share Posted January 7, 2015 No i'm not, i'm asking what was the reason you disagreed with my post for as I was interested why you did considering what I wrote is based on my experience as a guard. It's all there written down, that's what you wrote, you are disagreeing with your own post and there's plenty of 'agrees' with my posts further up the thread. You clearly have a problem. I was pointed in the direction of the block button the other day and I look forward to a TheWeatheringMan free RMweb experience. Link to post Share on other sites More sharing options...
Mod4 Posted January 7, 2015 Share Posted January 7, 2015 A number posts between the two of you have already been removed from this thread, please can you refrain from continuing such an unnecessary exchange. Link to post Share on other sites More sharing options...
Andy Y Posted January 7, 2015 Share Posted January 7, 2015 I have taken the step of adjusting the two members settings so they cannot see each others posts or messages. Link to post Share on other sites More sharing options...
JeffP Posted January 7, 2015 Share Posted January 7, 2015 I was about to disagree............ Sorry Andy, only joking....... Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted January 7, 2015 RMweb Gold Share Posted January 7, 2015 For what it's worth, using the Hornby or Bachmann close coupling mechanisms on corridor stock isn't a bad way forward, unless you want to indulge in splitting and shunting sets of coaches on the layout. I have mine made up into short rakes, and use screw couplings to couple the lead coach to the loco, which generally works fine (sharpest curve is 2' 6" radius). Link to post Share on other sites More sharing options...
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