RMweb Gold Stubby47 Posted May 4, 2016 Author RMweb Gold Share Posted May 4, 2016 Coach moving under gravity : 11 Link to post Share on other sites More sharing options...
RMweb Premium Mallard60022 Posted May 4, 2016 RMweb Premium Share Posted May 4, 2016 Is that DCC Sound Stu? P Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted May 4, 2016 Author RMweb Gold Share Posted May 4, 2016 Magnet tray added : Link to post Share on other sites More sharing options...
Nearholmer Posted May 4, 2016 Share Posted May 4, 2016 If you were to attach the layout to the tilting table of a Congreve Clock https://en.m.wikipedia.org/wiki/Congreve_clock you could dispense with electric key altogether, and have the train roll to and fro entirely by gravitational action. K Link to post Share on other sites More sharing options...
RMweb Premium Mallard60022 Posted May 5, 2016 RMweb Premium Share Posted May 5, 2016 I had an oscillating ball clock once. Had it removed without anesthetic. I'm really glad you are keeping going with this Stu as another pasty can be rustled up from somewhere. Phil Link to post Share on other sites More sharing options...
Edwardian Posted May 5, 2016 Share Posted May 5, 2016 If you were to attach the layout to the tilting table of a Congreve Clock https://en.m.wikipedia.org/wiki/Congreve_clock you could dispense with electric key altogether, and have the train roll to and fro entirely by gravitational action. K He of the rockets! Link to post Share on other sites More sharing options...
cpman46 Posted May 5, 2016 Share Posted May 5, 2016 I had an oscillating ball clock once. Had it removed without anesthetic. I'm really glad you are keeping going with this Stu as another pasty can be rustled up from somewhere. Phil Did it have a regular rhythm? Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted May 5, 2016 Author RMweb Gold Share Posted May 5, 2016 Curious faults at the moment. When I put the coach on the track, with magnets, I only expect the local section/s to be affected. However, sections from over 6" away are also affected. Behind the coach, this is not a problem, but not helpful in front. Plus, the SPDT switches seem to be either one pole, or both together. Neither of these are helpful. Where can those clocks be got from ? Link to post Share on other sites More sharing options...
RMweb Premium uax6 Posted May 5, 2016 RMweb Premium Share Posted May 5, 2016 I would check the orientation of the reeds, I found years back when I played about with them, that they all need to point the same way round to work effectively. I suspect that your magnets may be a tad too powerful, see what the result is in taking out the middle two, or by just using the middle two (or even middle one). Andy G Link to post Share on other sites More sharing options...
CourthsVeil Posted May 5, 2016 Share Posted May 5, 2016 Stu, sorry to read about your faults! In post #53 above I wrote: "… it appears to me to be very difficult to adjust the length of the magnet line to the distance of the reed sensors. Not the physical length, rather the range of its effect…" That's the reason why (in my experimental setup) I used a single magnet plus a relay – instead of a line of magnets. Best wishes still Armin Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted May 5, 2016 Author RMweb Gold Share Posted May 5, 2016 Thanks gents. During the Members Day, it was quite apparent that a single ring magnet was not able to hold two reeds over at the same time. Experimenting today, even the single flat magnet seemed to have a too-wide range. I do have some rod magnets, courtesy of Penlan, which will be trialled instead. Also, I think the reeds I have in place do need to be reviewed and probably replaced as they are possibly laid incorrectly. In the 'good news' column, the layout has been invited to another exhibition in November. 4 Link to post Share on other sites More sharing options...
RMweb Premium uax6 Posted May 5, 2016 RMweb Premium Share Posted May 5, 2016 Have you tried the magnets on their sides? Andy G Link to post Share on other sites More sharing options...
RMweb Gold Captain Kernow Posted May 5, 2016 RMweb Gold Share Posted May 5, 2016 All this talk of magnetism may invoke a temporal disturbance in the Earth's magnetic field in the rural area immediately to the north of Truro. Watch out for Stubby's own aurora borealis. Link to post Share on other sites More sharing options...
RMweb Gold ian Posted May 5, 2016 RMweb Gold Share Posted May 5, 2016 Watch out for Stubby's own aurora borealis. There is an ointment you can get to sort that out. Link to post Share on other sites More sharing options...
RMweb Premium Ian Smeeton Posted May 5, 2016 RMweb Premium Share Posted May 5, 2016 Thanks gents.<snip> In the 'good news' column, the layout has been invited to another exhibition in November. Fantastic news, Stubby, Where? And will it be working? Best Regards Ian Link to post Share on other sites More sharing options...
bertiedog Posted May 6, 2016 Share Posted May 6, 2016 To adjust the magnets a shim of thin mild steel can be added under the magnets, in two pieces and then adjusted to leave a gap through which the magnetic field operates. Or use a single neodymium magnet for a more concentrated field over the reed switches. The switches themselves can be adjusted by a shim over them, or biased with a small magnet to de-sensitise them. Stephen. Link to post Share on other sites More sharing options...
bertiedog Posted May 6, 2016 Share Posted May 6, 2016 On the Congreve clock, yes, they are commercially made, at a very high price, or are made by clockmaking enthusiasts to plans available from several sources. The plain fact is that Congreve may have designed the clock, but almost certainly did not make one. They are notorious to get to run accurately at all, although the commercial ones do function quite well, as accurate CNC cutting is used for the rolling table. The reason I know about them are the two in the workshop and house at the moment, both built from scratch, one works to about a minute a day, and the other design feels good at about a minute per hour!! They are difficult to regulate properly and temperature affects them badly. The commercial ones are best in a glass case in a stable temperature to run accurately, and may approach about 5 to 7 seconds a day. But it is not really about the accuracy, the movement is simply fascinating to watch in full action. Stephen. 2 Link to post Share on other sites More sharing options...
rockershovel Posted May 6, 2016 Share Posted May 6, 2016 When it rains Who cares I've a train upstairs With a brake Sort of thing Which I make With a string.. That's what I make when it's cold and wet It's a good sort of brake But it hasn't worked yet.. (After A A Milne) 3 Link to post Share on other sites More sharing options...
RMweb Gold Stubby47 Posted May 6, 2016 Author RMweb Gold Share Posted May 6, 2016 Fantastic news, Stubby, Where? And will it be working? Best Regards Ian It's the Cornwall Model Railway Exhibition, at Carn Brae Leisure Centre, on Sunday 6th November. And I certainly hope so ! 1 Link to post Share on other sites More sharing options...
RMweb Premium Ian Smeeton Posted May 11, 2016 RMweb Premium Share Posted May 11, 2016 It's the Cornwall Model Railway Exhibition, at Carn Brae Leisure Centre, on Sunday 6th November. And I certainly hope so ! Too far away for me I am afraid. Best of luck and looking forward to the video Regards Ian Link to post Share on other sites More sharing options...
Edwardian Posted May 12, 2016 Share Posted May 12, 2016 It's the Cornwall Model Railway Exhibition, at Carn Brae Leisure Centre, on Sunday 6th November. And I certainly hope so ! Too far for me too, besides, I think my passport might have expired. Have a good one! Link to post Share on other sites More sharing options...
RMweb Premium Mallard60022 Posted May 13, 2016 RMweb Premium Share Posted May 13, 2016 When it rains Who cares I've a train upstairs With a brake Sort of thing Which I make With a string.. That's what I make when it's cold and wet It's a good sort of brake But it hasn't worked yet.. (After A A Milne) I am the egg man. (After J. Lennon). 1 Link to post Share on other sites More sharing options...
RMweb Premium dhjgreen Posted July 4, 2016 RMweb Premium Share Posted July 4, 2016 I have just noticed you have announced the demise of this project in your signature, sneaky! Surely it deserves a fitting end if you really mean it. Link to post Share on other sites More sharing options...
RMweb Gold ian Posted July 4, 2016 RMweb Gold Share Posted July 4, 2016 (edited) I have just noticed you have announced the demise of this project in your signature, sneaky! Surely it deserves a fitting end if you really mean it.Set on fire and floated down the Ganges perhaps? Edited July 4, 2016 by ian 2 Link to post Share on other sites More sharing options...
RMweb Premium dhjgreen Posted July 4, 2016 RMweb Premium Share Posted July 4, 2016 For authenticity, Stu should build a model of a Ghat with funeral pyre and then scatter the ashes in the Ganges Where is Stu; I know where he hides!! Link to post Share on other sites More sharing options...
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