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Multiple, as in Diesel Multiple Unit


Ravenser

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The obvious thing to be done when you have a new model is to run the layout... So the 101 was given a thorough workout during a running session, just to make sure there were no hidden bugs

 

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Tail traffic is an operational feature of the layout - the CCT will be attached to the outward working of the morning parcels. Hence DMUs need functional couplings. This gets in the way of full end detail, and I'm toying with the idea of giving the 114 fully detailed ends to use the Craftsman pack I have - when I finally get around to building the DC kit in my cupboard. The idea is that a 114 would be 2" longer , and therefore much less suitable for tacking CCTs and the like on the back of.. As it is, a short-frame DMU plus CCT just fits into Pl.1

 

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The Blue period engineer's train awaits running round. The Zander has had additional lead stuffed under it to ensure it behaves

 

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A busy scene at Blacklade.

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While I was about it, it suddenly occurred to me that DMUs do after all work in multiple , and I now have two low density 2 car DMUs of classes 101 and 108. Could they be consisted?

 

Despite rather different mechanisms (Limby motor bogie and Bachmann motor bogie) it turned out that they could , quite comfortably. Admittedly the resulting 4 car formation is a squeeze into Pl.3 and is way too big for anywhere else , so it's not terribly practical. But I have a DC Kits 128 to do, and that would give me a very workable 3 car formation - so long as the Replica MLV chassis proves compatible with the other 2 units

 

Along the way I discovered that the Bachmann/ESU decoders I fitted in the 108 don't support advanced consisting - just basic oldstyle consisting. So we now have Coupling Codes: Blue Square for units supporting only basic consisting, Red Triangle for compatible units supporting advanced consisting, Red Circle for second generation units with Limby motor bogie or compatible (Red Triangle and Red Circle units can physically work together, but it's inauthentic) , and Black Cross units - meaning the 158 which has a thoroughly uncompatible centre motor drive and no working couplings on the end.

 

With a reworked 155 under way I should (hopefully) have another unit that can work with my two 153s, and then finally I start to get a variety of permutations for multiple unit working in the later period too.

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