Mattmaz Posted November 12, 2012 Share Posted November 12, 2012 Hi all, I have a short rake of 6 Dapol JNA "Falcon" wagons which have been persistently derailing on two corners of my layout (hidden ones, naturally!). Initially I suspected that the flanges of the wheels were catching the NEM pockets, so I removed the pockets and fitted Kadee Number 5s throughout. Same problem. I then removed part of the underframe bars which looked to be catching the flanges too. Same problem. My next (and probably should have been my first) move was to check the back-to-back measurement. These were all way out, so I adjusted accordingly & set the rake off on another journey with my eyes tightly closed...... Same problem. I give up. Now, the corners concerned are fairly tight, but I have never had any issues with other rollings stock, and on a visible yet-to-be-covered corner (tightest on the layout) there are no issues whatsoever. My gut feeling is to just sell them and be done with it, but I do like the look of the wagon, but if I can't run them then for sale they will go.... All I can think of is that the bogie frame gets a light push from one of the diagonal underframe cross braces, but I am loathed to go chopping more of these wagons apart. hence this post - has anyone else experienced the same frustrating problems with this type of wagon? Or am I just unlucky??.... lol Thanks in advance, Matt Link to comment Share on other sites More sharing options...
RMweb Gold Revolution Mike Posted November 12, 2012 RMweb Gold Share Posted November 12, 2012 Matt It sounds like any one (or a combination) of: - back to backs out - wagons too light - curves too tight - buffers clashing - or couplings too short for the curves Cheers, Mike Link to comment Share on other sites More sharing options...
Mattmaz Posted November 12, 2012 Author Share Posted November 12, 2012 Matt It sounds like any one (or a combination) of: - back to backs out - wagons too light - curves too tight - buffers clashing - or couplings too short for the curves Cheers, Mike Thanks for your reply Mike, unfortunately none of the above... with the exception of possibly weight - that's something I might try this evening. If it works my rake of empties may become a loaded one Cheers, Matt Link to comment Share on other sites More sharing options...
alibuchan Posted November 12, 2012 Share Posted November 12, 2012 Try this bizarre fix first. Pull all of the axles out of the wagons put them all in a bag, give the bag a shake and replace them in any random order. This worked on the 4 on my mates layout. We only happened on this one due to the axles falling out. Alistair Link to comment Share on other sites More sharing options...
Mattmaz Posted November 12, 2012 Author Share Posted November 12, 2012 Thanks Alistair - I will give that a go too Matt Link to comment Share on other sites More sharing options...
RMweb Premium newbryford Posted November 12, 2012 RMweb Premium Share Posted November 12, 2012 Do they always derail in the same place? Have you tried one or two wagons on their own? Have you tried moving the wagons around in the formation? Although you say it's not the tightest curve, there may be an extra kink in the track? Cheers, Mick Link to comment Share on other sites More sharing options...
JCClark Posted November 15, 2012 Share Posted November 15, 2012 Hello Matt I had same problem with MRA wagon set and found it was bogie holding screw too tight faiking to allow bogie enough turn round my curve. Slackened off slightly and running like a dream now. John Link to comment Share on other sites More sharing options...
Grovenor Posted November 15, 2012 Share Posted November 15, 2012 (hidden ones, naturally!). Is it possible to 'unhide' the curves concerned? The only way to diagnose this sort of problem is to observe carefully the operation where the derailment occurs.Keith Link to comment Share on other sites More sharing options...
RMweb Premium newbryford Posted November 15, 2012 RMweb Premium Share Posted November 15, 2012 Hello Matt I had same problem with MRA wagon set and found it was bogie holding screw too tight faiking to allow bogie enough turn round my curve. Slackened off slightly and running like a dream now. John Both the Dapol MRA and JNA are fitted with AxleMotion 3 bogies,however, those fitted to the MRA are screwed on and the JNA's are clipped on. Cheers, Mick Link to comment Share on other sites More sharing options...
class"66" Posted November 27, 2012 Share Posted November 27, 2012 Hello Matt I had same problem with MRA wagon set and found it was bogie holding screw too tight faiking to allow bogie enough turn round my curve. Slackened off slightly and running like a dream now. John Agree,had same problem with mine buddy.... Link to comment Share on other sites More sharing options...
class"66" Posted November 28, 2012 Share Posted November 28, 2012 Ive now changed all my Dapol bogie frames on my "MRA" wagons,for the bogie frames off the Bachmann ews "MOA"s.They swop over perfected!! and i can now run them over point and tight curves without derailing!! Realy happy now.... Link to comment Share on other sites More sharing options...
Mattmaz Posted December 5, 2012 Author Share Posted December 5, 2012 Thanks for the replies on this subject. I have tried any number of things now, adding weight, back-to-back measurements etc etc, all of the advise kindly offered. Unfortunately, having found an annoyingly slight kink in the previously hidden section, and rectified the kink, they have now started to derail elsewhere too. I have a lot of other rolling stock, and it's only these JNAs I've had problems with. Ironically they do cope with all of the super elevated curves that are "on scene" lol. What doesn't help with the Dapol wagons too is the seemingly shallower wheel flanges. Anyhow, I have spent far too long trying to get them running on my layout now. Unfortunately I have ended up "spitting my dummy out" and have offered them for sale on Flea-bay. Thanks again for taking the time to reply, Cheers, Matt Link to comment Share on other sites More sharing options...
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