annette Posted January 31, 2022 Share Posted January 31, 2022 Help! Can someone tell me where to add insulated rail joiners on my DCC layout with electrofrog points please? Thank you! Annette Link to post Share on other sites More sharing options...
Tony Cane Posted January 31, 2022 Share Posted January 31, 2022 The two rails that diverge from the frog require isolation. This requires 4 insulated rail joiners at each of the crossovers linking the outer circuit with the inner. Link to post Share on other sites More sharing options...
RMweb Gold ITG Posted January 31, 2022 RMweb Gold Share Posted January 31, 2022 (edited) 2 hours ago, Tony Cane said: The two rails that diverge from the frog require isolation. This requires 4 insulated rail joiners at each of the crossovers linking the outer circuit with the inner. Technically that’s only 2 at each crossover, as being so close together the two points share inner rails. See later post - my brain was not in gear! It is of course 4 at each crossover. Edited February 1, 2022 by ITG Correction Link to post Share on other sites More sharing options...
Tony Cane Posted January 31, 2022 Share Posted January 31, 2022 Your 2 insulated joiners per crossover ignores the possible connection between the frogs on oppsite sides being set such that one is connected to the outer rail and one to the inner rail. The 4 insulated joiners at each crossover eliminates this problem Link to post Share on other sites More sharing options...
RMweb Gold Harlequin Posted January 31, 2022 RMweb Gold Share Posted January 31, 2022 (edited) 2 hours ago, annette said: Help! Can someone tell me where to add insulated rail joiners on my DCC layout with electrofrog points please? Thank you! Annette Incorrect info removed to prevent further confusion! Edited February 1, 2022 by Harlequin Link to post Share on other sites More sharing options...
Dungrange Posted January 31, 2022 Share Posted January 31, 2022 (edited) 29 minutes ago, Harlequin said: 4 in total. I actually agree with @Tony Cane. There is also a need for the other rail connection to the common crossing to also have insulated joiners otherwise your frog switching switches more than just the polarity of the frog - but the polarity of the rail until it shorts at the next point. I'd therefore say eight in total for the track plan shown. Edited January 31, 2022 by Dungrange Link to post Share on other sites More sharing options...
Grovenor Posted January 31, 2022 Share Posted January 31, 2022 Indeed, Tony and David are correct, you need 2 I/Js per point which makes 4 per crossover, 8 in total. Link to post Share on other sites More sharing options...
annette Posted January 31, 2022 Author Share Posted January 31, 2022 Thank you guys. So on which rails exactly do I fit the four per each crossover? If two are fitted between each of the end-to-end points (as on 'Harlequin's' diagram), where do I place the (4) others? Annette Link to post Share on other sites More sharing options...
amdaley Posted February 1, 2022 Share Posted February 1, 2022 (edited) 25 minutes ago, annette said: Thank you guys. So on which rails exactly do I fit the four per each crossover? If two are fitted between each of the end-to-end points (as on 'Harlequin's' diagram), where do I place the (4) others? Annette Using Harlequin's image above where the red lines are. Two per each point 4 x 2 + 8 in total. Edited February 1, 2022 by amdaley 2 Link to post Share on other sites More sharing options...
RMweb Gold Harlequin Posted February 1, 2022 RMweb Gold Share Posted February 1, 2022 Apologies everyone. You're right of course. 8 in total. Link to post Share on other sites More sharing options...
RMweb Gold ITG Posted February 1, 2022 RMweb Gold Share Posted February 1, 2022 Yup, what was I thinking. Of course it’s 4 per crossover. Brain not in gear. Link to post Share on other sites More sharing options...
annette Posted February 1, 2022 Author Share Posted February 1, 2022 Thank you amdaley (Keith?), (and Harlequin Phil, Tony and David,) I have done what you suggest and it all is working beautifully now! Best wishes and most grateful, Annette 1 1 Link to post Share on other sites More sharing options...
Grovenor Posted February 2, 2022 Share Posted February 2, 2022 Good to hear that. Enjoy it. Link to post Share on other sites More sharing options...
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