The last few DMUs

Long time followers will recall this old picture of a Hornby Class 110 DMU that I intended to chop up into something a little more ‘local’.  With the acquisition of a Bachmann Derby lightweight as a gap filler it kind of fell off the radar a little. I did debate doing another class 100 but in the end I have decided that a Park Royal class 103 would be the target of my attentions.

A little about the prototypes

These units were introduced in 1957 to the Birmingham LMR region. 20 sets were produced and the last vehicle in passenger use lasted until 1983.  A few vehicles survived a little longer in departmental use (Derby RTC Lab5 lasting until 1991) or as a Sandite unit (1985).  There was another oddity in that one set was converted to a Viaduct Inspection Saloon.  This was withdrawn in 1978 but was saved for preservation.

The 20 sets were all allocated to the Birmingham area for their first decade operating mainly Walsall services before moving on initially to Chester then spreading further afield. Although none standard they did use the blue square coupling code so could work with the majority of other DMU types. Pretty early on they started to suffer from cracking in the bogie frames and their poor reliability saw steam hauled services return to many of their diagrams while the problems were sorted out.  Aside from the oddballs mentioned earlier they only carried 2 liveries. Green (with or without whiskers and later with a small yellow warning panel) or BR Blue (small panel or full yellow end). None received blue and grey livery.

The Model

The similarity between a class 103 and the class 110 is reasonably obvious and (as with my class 100 and 114 conversions) the desired result can be achieved buy cutting parts out and shuffling them around, Plus a few spare panels from previous projects.

The above diagram may be of assistance. The red lines are cuts or areas than need to be removed.  The orange areas are surplus and the blue areas need filling in.  On the driving trailer everything aft of the last door stays the same as the class 110. I didn’t cut into the roof.

Initial stages of assembly.  You can see the additional panel from another body shell in white.

Face on you can see where the windows are opened up to match the class 103. The new frames are 10 x 30 thou microstrip secured to the inner edges. Incidentally in working on this conversion I have come to the conclusion that the class 110 windows aren’t right as supplied. They need to be wider and the angles tops need a slight curve.

The 2 body shells after a coat of primer and more work with filler. The angled tumblehome Hornby used has been rounded off and any missing hinges replaces with etched ones from Southern Pride. I need to add another cental filler to the DMBS yet.

Why do one when you can do 2? 

While in a DMU kinda mood I have started work on a class 129 DPU using a DC kits body kit.

A bit on this prototype as well

3 of these single car units were ordered from Cravens by the LMR.  These had a none standard coupling code (yellow diamond) meaning that the could work with the original Derby Lightweights. Introduced in 1958 they lased until 1973 with one going to the RTC initially for brake testing but later for hydraulic transmission tests and gaining the name ‘Hydra’.  None of the 3 survived into preservation. Although 55997 was initially allocated to Walsall it was 55998 that was most often to be found working int he Birmingham area during the late 1950s mainly on New Street to Walsall, Wolverhampton or Coventry services. Later it would regularity continue on to Rugby and one slightly unusual service was Alrewas to New Street with produce from market gardens.  As with the other DPU class, class 128 they would regularly pull a tail load.

The Model

Charlie supplied his class 129 kit with a standard class 105 cravens DMU cab moulding (no doubt tooling up another cab just for this class of 3 units wouldn’t make a huge amount on commercial sense).  So there is a little work to do to make it closer to the prototype, mainly removing the destination box and moving the marker lights down. I elected not to use the supplied flat bass etch for the route indicator box and made my own from microstrip.

The main bodyshell assembled with extra little details.  On something so plain sided it pays to add these little things to break up the sea of grey plastic