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About mossdp

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  1. There is a thread on here or possibly elsewhere about slow running Bachmann Voyagers. Someone had investigated this in detail and found that the brush springs had lost their "springiness" and this caused excess current consumption. Once the brush covers were removed by gently levering them out and the springs stretched slightly then performance was restored. It may be that poor commutation is causing arcing and this is causing a build up of carbon in the commutator slots leading to excessive current consumption or that the brushes have stuck in their tubes against the armature. There are multiple reports of this sort of fault and it nearly always seems to be that a model has been in store for sometime. The lack of springiness may be the effect of the excessive current consumption rather than the cause as excess heat seems to cause springs to loose their springiness and possibly stuck brushes are the underlying cause. It is also important that the rest of the mechanism is also running freely and cleaned and lubricated.
  2. On many older Hornby models with traction tyres, you can replace traction tyred wheels with those without traction tyres but also have a gear moulded on them. On diesels, this sort of wheel was often used on the trailing bogies so you need some additional spares of the wheels like that. If you remove the traction tyres, you will need to add quite a bit of extra weight to the model to restore adequate pulling power.
  3. Older Hornby models had an incorrect buffer height. I think this was to allow the coupling hook to pass under the buffers without jamming against them on sharp curves that were followed immediately by a sharp incline. Some diesel models can have the height reduced a bit by removing a little from the top of the bogie supports either side. On some models, the under frame fuel tank or battery box detail has been made rather too deep to compensate for the increased height so it will be rather near the track following adjustment.
  4. Windows have square corners. The crests that are on one of them are round and could be NER ones though. There is no name underneath
  5. So possibly D&S kits - many thanks. They do look rather unusual with the bogies so inwards. I will have to see if I can find the book mentioned to see if the bogies are in the wrong positions.
  6. I think I recall a couple of blue class 86/4 at Liverpool Street when they were first converted from 86/0 or 86/3 as at the time I had never seen an 86/4 and did not know at the time that they had been converted and numbered. That just give a fair narrow date range but I think earlier than 1987. At the back of my mind they may have been 86405 or possibly 86402 and 86420, but I can find no evidence of them in blue with these numbers so it may have been two others. Maybe they were on test.
  7. Thank you very much for that positive identification. I thought someone would be able to help. I have not seen a model of these type of vehicles before.
  8. Can anyone identify these etched brass panelled coaches - both prototype and who made the models please? Must be pregrouping. One model has a crest on it, but I cannot identify it. They are quite short with the bogies well inboard of the ends. Possibly plastic roof. White metal bogies. No manufacturers name on them in any visible place. Three different vehicles
  9. Sometimes the insulation that should cover the brush arms and stops them shorting on the bogie side supports slips or is missing causing a short circuit and the model to jerk or stop as the power car tilts giving the impression that the motor is running inconsistently
  10. I found similar performance problems with some Heljan models - starting speed would be high and quite slow speed running sometimes not possible. There were variations between individual models. Found that the one cause was the motors. When disconnected from everything else, would not turn slowly - had to increase the power and they would suddenly start to rotate at quite a speed. Slow speed performance was often no better than some Lima and Hornby ringfield models. Like with these models though, there were better and not so good examples.
  11. Many thanks for that clarification. Will order one
  12. Quick check before I place my order - which 00 models are suitable for class 92s as initially delivered? I know they will be grey ones, but not sure whether additional adornments listed came later.
  13. Graham Farish made a Q class in 00 in the 1950s although you might struggle to recognise it as such. The designers seem to have confused a Q and a Q1 and fitted wheels that might have been from the Graham Farish American Hudson - maybe because they had a passing resemblance to Boxpox wheels! I think Jaycraft also made a resin kit designed for a Tri-ang or Hornby chassis. This predates the Golden Arrow Productions one by several decades
  14. I had the same problem. It was in 14 step mode and had to be changed to 128 step mode
  15. There is or was video on YouTube showing a steam hauled charter train under the wires in heavy rain with an almost continuous arc from the wires through the black smoke to the funnel. Was probably from a link on this forum I saw it, but cannot find it now
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